2008
Journal article
Restricted
Detection of signs of brain dysfunction in epileptic children by recognition of transient changes in the correlation of seizure-free EEG
Righi M., Barcaro U., Starita A., Karakonstantaki E., Micheloyannis S.
Seizure-free EEG signals recorded from epileptic children were compared with EEG signals recorded from normal children. The comparison was based on the detection of transient events characterized by decrease in the correlation between different traces. For this purpose, a conceptually and mathematically simple method was applied. Two clear and remarkable phenomena, able to quantitatively discriminate between the two groups of subjects, were evidenced, with high statistical significance. In fact, it was observed that: (a) The number of events for the epileptic group was larger; (b) Applying restrictive criteria for event definition, the number of subjects in the epileptic group presenting events was larger. The results support the hypothesis of a decrease in brain correlation in children with epilepsy under treatment. This confirms the efficacy of the EEG signal in evaluating cortical functional differences not visible by visual inspection, independently of the cause (epilepsy or drugs), and demonstrate the specific effectiveness of the analysis method applied.Source: Brain topography 21 (2008): 43–51. doi:10.1007/s10548-008-0057-2
DOI: 10.1007/s10548-008-0057-2
Metrics:
Righi M., Barcaro U., Starita A., Karakonstantaki E., Micheloyannis S.
Seizure-free EEG signals recorded from epileptic children were compared with EEG signals recorded from normal children. The comparison was based on the detection of transient events characterized by decrease in the correlation between different traces. For this purpose, a conceptually and mathematically simple method was applied. Two clear and remarkable phenomena, able to quantitatively discriminate between the two groups of subjects, were evidenced, with high statistical significance. In fact, it was observed that: (a) The number of events for the epileptic group was larger; (b) Applying restrictive criteria for event definition, the number of subjects in the epileptic group presenting events was larger. The results support the hypothesis of a decrease in brain correlation in children with epilepsy under treatment. This confirms the efficacy of the EEG signal in evaluating cortical functional differences not visible by visual inspection, independently of the cause (epilepsy or drugs), and demonstrate the specific effectiveness of the analysis method applied.Source: Brain topography 21 (2008): 43–51. doi:10.1007/s10548-008-0057-2
DOI: 10.1007/s10548-008-0057-2
Metrics:
See at:
Brain Topography 
| www.springerlink.com | CNR ExploRA
2008
Journal article
Closed Access
Usefulness of the analysis of links among dream sources in therapy
Barcaro U., Rizzi P.
A study of the links among the memory sources of dreams can be carried out by means of an automatic analysis of text files including dream reports and associations. Heuristic criteria can provide plausible explanations for the existence of these links, which generally present a logical and at the same time emotional significance. The aim of this paper is to support the idea that the study of the link patterns among dream sources, in addition to being interesting from the cognitive viewpoint can be also useful for the therapeutic process. An interaction schema is described including four operators: the dreamer (patient), the therapist, the detector of possible links, and the proposer of plausible explanations. Two examples are given of application of this schema. (PsycINFO Database Record (c) 2012 APA, all rights reserved)Source: Dreaming (N.Y.N.Y.) 18 (2008): 139–157. doi:10.1037/a0012899
DOI: 10.1037/a0012899
Metrics:
Barcaro U., Rizzi P.
A study of the links among the memory sources of dreams can be carried out by means of an automatic analysis of text files including dream reports and associations. Heuristic criteria can provide plausible explanations for the existence of these links, which generally present a logical and at the same time emotional significance. The aim of this paper is to support the idea that the study of the link patterns among dream sources, in addition to being interesting from the cognitive viewpoint can be also useful for the therapeutic process. An interaction schema is described including four operators: the dreamer (patient), the therapist, the detector of possible links, and the proposer of plausible explanations. Two examples are given of application of this schema. (PsycINFO Database Record (c) 2012 APA, all rights reserved)Source: Dreaming (N.Y.N.Y.) 18 (2008): 139–157. doi:10.1037/a0012899
DOI: 10.1037/a0012899
Metrics:
See at:
Dreaming | psycnet.apa.org | CNR ExploRA
2010
Journal article
Closed Access
Preliminary description of a self-similarity phenomenon in the connection patterns of dreams
Barcaro U., Rizzi P.
The objective of the research was to recognize and describe a phenomenon of self-similarity in dreams, specifically in the connection patterns of dreams: These patterns were obtained by means of a linguistic analysis of data including dream reports and associations provided by the dreamer. Dreams of four patients in therapy, three for each patient, were considered. It was found that a well-defined pattern (Basic Pattern) existed at three levels: links among dream sources of a dream, connections among source clusters of a dream, and connections among different dreams of a same patient. This self-similarity pattern was meaningfully interpretable at all the three levels. Considering the small number of patients, the description and interpretation of the results should be viewed as only preliminary. However, a minimum value for the occurrence frequency of the observed phenomenon can be given with good statistical significance.Source: Dreaming (N.Y.N.Y.) 20 (2010): 136–148. doi:10.1037/a0019241
DOI: 10.1037/a0019241
Metrics:
Barcaro U., Rizzi P.
The objective of the research was to recognize and describe a phenomenon of self-similarity in dreams, specifically in the connection patterns of dreams: These patterns were obtained by means of a linguistic analysis of data including dream reports and associations provided by the dreamer. Dreams of four patients in therapy, three for each patient, were considered. It was found that a well-defined pattern (Basic Pattern) existed at three levels: links among dream sources of a dream, connections among source clusters of a dream, and connections among different dreams of a same patient. This self-similarity pattern was meaningfully interpretable at all the three levels. Considering the small number of patients, the description and interpretation of the results should be viewed as only preliminary. However, a minimum value for the occurrence frequency of the observed phenomenon can be given with good statistical significance.Source: Dreaming (N.Y.N.Y.) 20 (2010): 136–148. doi:10.1037/a0019241
DOI: 10.1037/a0019241
Metrics:
See at:
Dreaming | psycnet.apa.org | CNR ExploRA
2004
Journal article
Restricted
A general automatic method for the analysis of NREM sleep microstructure
Barcaro U., Bonanni E., Maestri M., Murri L., Parrino L., Terzano M. G.
The NREM sleep EEG of 10 normal subjects was examined in order to recognize formal phasic events of sleep microstructure. The event identification was carried out following a three-step procedure: (1) computation of band-related descriptors derived from the EEG signal, (2) introduction of suitable thresholds and (3) application of simple logical principles, i.e. an exclusion principle and an overlapping principle.Source: Sleep medicine (Amsterdam. Print) 5 (2004): 567–576. doi:10.1016/j.sleep.2004.07.012
DOI: 10.1016/j.sleep.2004.07.012
Metrics:
Barcaro U., Bonanni E., Maestri M., Murri L., Parrino L., Terzano M. G.
The NREM sleep EEG of 10 normal subjects was examined in order to recognize formal phasic events of sleep microstructure. The event identification was carried out following a three-step procedure: (1) computation of band-related descriptors derived from the EEG signal, (2) introduction of suitable thresholds and (3) application of simple logical principles, i.e. an exclusion principle and an overlapping principle.Source: Sleep medicine (Amsterdam. Print) 5 (2004): 567–576. doi:10.1016/j.sleep.2004.07.012
DOI: 10.1016/j.sleep.2004.07.012
Metrics:
See at:
Sleep Medicine | www.sciencedirect.com | CNR ExploRA
2010
Book
Unknown
The interwoven sources of dreams
Barcaro U.
The subject of this book is the study of dreaming from a specific point of view, which provides useful and enlightening results: the analysis of the complex patterns of links among the memory sources of dreams. The significance of these patterns is logical and emotional at the same time. This approach is interdisciplinary: it directly involves the fields of psychology, psychotherapy, linguistics, computer science, mathematics (graph theory, neural networks), history of psychology, literature, and motion pictures.Source: London: Karnac Books, 2010
Barcaro U.
The subject of this book is the study of dreaming from a specific point of view, which provides useful and enlightening results: the analysis of the complex patterns of links among the memory sources of dreams. The significance of these patterns is logical and emotional at the same time. This approach is interdisciplinary: it directly involves the fields of psychology, psychotherapy, linguistics, computer science, mathematics (graph theory, neural networks), history of psychology, literature, and motion pictures.Source: London: Karnac Books, 2010
See at: CNR ExploRA
2003
Other
Open Access
Un pacchetto software per l'analisi automatica della microstruttura del sonno NREM umano
Cerri S., Barcaro U.
An abstract is not available
Cerri S., Barcaro U.
An abstract is not available
See at:
ISTI Repository 
| CNR ExploRA
2004
Journal article
Restricted
A general automatic method for the analysis of NREM sleep microstructure
Umberto Barcaro, Enrica Bonanni, Michelangelo Maestri, Luigi Murri, Liborio Parrino, Mario Giovanni Terzano
Objective: To define a unified method for the automatic recognition and quantitative description of EEG phasic events of sleep microstructure occurring during NREM sleep, particularly arousals, phase A subtypes of cyclic alternating pattern and spindles. Methods: The NREM sleep EEG of 10 normal young subjects was examined in order to recognize formal phasic events of sleep microstructure. The following 'formal' events (i.e. events defined exclusively on the basis of automatic analysis criteria) were classified: arousals, A1-phases (A-phases not including arousals) and A2- and A3-phases (A-phases including arousals). Spindle bursts, corresponding to visually recognized spindles, were also formally defined. The identification of these events was carried out following a three-step procedure: (1) computation of band-related descriptors derived from the EEG signal, (2) introduction of suitable thresholds and (3) application of simple logical principles, i.e. an exclusion principle and an overlapping principle. Results: Formal A-phases, arousals and spindle bursts showed spectral characteristics which were consistent with visual inspection. The value of the parameter Correctness for the recognition of the A-phases was 83.5%. In particular, the different physiological distribution of the A-phases in Stage 2 preceding slow wave sleep with respect to Stage 2 preceding REM sleep was confirmed. Conclusions: The proposed method provides a unified quantitative approach to the study of sleep microstructure. Visually defined events can be reliably identified by means of automatic recognition. (C) 2004 Elsevier B.V. All rights reserved.Source: Sleep medicine (Amsterdam. Print) 5 (2004): 567–576. doi:10.1016/j.sleep.2004.07.012
DOI: 10.1016/j.sleep.2004.07.012
Metrics:
Umberto Barcaro, Enrica Bonanni, Michelangelo Maestri, Luigi Murri, Liborio Parrino, Mario Giovanni Terzano
Objective: To define a unified method for the automatic recognition and quantitative description of EEG phasic events of sleep microstructure occurring during NREM sleep, particularly arousals, phase A subtypes of cyclic alternating pattern and spindles. Methods: The NREM sleep EEG of 10 normal young subjects was examined in order to recognize formal phasic events of sleep microstructure. The following 'formal' events (i.e. events defined exclusively on the basis of automatic analysis criteria) were classified: arousals, A1-phases (A-phases not including arousals) and A2- and A3-phases (A-phases including arousals). Spindle bursts, corresponding to visually recognized spindles, were also formally defined. The identification of these events was carried out following a three-step procedure: (1) computation of band-related descriptors derived from the EEG signal, (2) introduction of suitable thresholds and (3) application of simple logical principles, i.e. an exclusion principle and an overlapping principle. Results: Formal A-phases, arousals and spindle bursts showed spectral characteristics which were consistent with visual inspection. The value of the parameter Correctness for the recognition of the A-phases was 83.5%. In particular, the different physiological distribution of the A-phases in Stage 2 preceding slow wave sleep with respect to Stage 2 preceding REM sleep was confirmed. Conclusions: The proposed method provides a unified quantitative approach to the study of sleep microstructure. Visually defined events can be reliably identified by means of automatic recognition. (C) 2004 Elsevier B.V. All rights reserved.Source: Sleep medicine (Amsterdam. Print) 5 (2004): 567–576. doi:10.1016/j.sleep.2004.07.012
DOI: 10.1016/j.sleep.2004.07.012
Metrics:
See at:
Sleep Medicine | ukpmc.ac.uk | CNR ExploRA
2018
Journal article
Open Access
Network properties of dream sources
Barcaro U., Carboncini M. C.
Vast research in the last decades has shed interesting light on a variety of heterogeneous systems, including the human brain, by studying their network properties. Our investigation aimed to see whether the system of dream sources and of the semantic links between them shares the network properties of the brain. The investigation was carried out by means of an appropriate graph representation of data obtained according to a protocol oriented to eliciting episodic dream sources. The main results were the following: most dream sources belonged to compact clusters; important hubs, i.e. sources very closely connected to numerous other sources, were present; the vertex-degree distribution presented two significant peaks; small-world properties were valid for most pairs of sources; forms of self-similarity or of partial self-similarity at different scales were observed; the graphs of dreams sources exhibited a very high level of integration between overlapping clusters.Source: International journal of dream research 11 (2018): 120–126. doi:10.11588/ijodr.2018.2.42736
DOI: 10.11588/ijodr.2018.2.42736
Metrics:
Barcaro U., Carboncini M. C.
Vast research in the last decades has shed interesting light on a variety of heterogeneous systems, including the human brain, by studying their network properties. Our investigation aimed to see whether the system of dream sources and of the semantic links between them shares the network properties of the brain. The investigation was carried out by means of an appropriate graph representation of data obtained according to a protocol oriented to eliciting episodic dream sources. The main results were the following: most dream sources belonged to compact clusters; important hubs, i.e. sources very closely connected to numerous other sources, were present; the vertex-degree distribution presented two significant peaks; small-world properties were valid for most pairs of sources; forms of self-similarity or of partial self-similarity at different scales were observed; the graphs of dreams sources exhibited a very high level of integration between overlapping clusters.Source: International journal of dream research 11 (2018): 120–126. doi:10.11588/ijodr.2018.2.42736
DOI: 10.11588/ijodr.2018.2.42736
Metrics:
See at:
journals.ub.uni-heidelberg.de | ISTI Repository | CNR ExploRA
2021
Journal article
Open Access
Jacob's dream: useful for, and enlightened by, current dream research
Barcaro U.
The biblical narration of Jacob's dream is analyzed in the light of current significant issues of dream research, specifically: the usefulness of historical data for the study of dreaming; the continuity theory; the phenomenological relationship between the dream experience and its sources; the relationship between music and dreaming; the latent role of archetypes in the construction of dreams; the significance of dreams for the cognitive study of religions; and the multiple levels of analysis of historically important dreams. Dream-evocative features in the biblical narration are also described, which are given by word-root recurrences and by the use of a "hapax legomenon" to indicate Jacob's vision. This analysis based on current dream research provides insights into Jacob's dream. In addition, Jacob's dream in itself is useful for dream research, because it highlights basic universal aspects of the dreaming experience. © 2021, International Journal of Dream Research.Source: International journal of dream research 14 (2021): 232–236. doi:10.11588/ijodr.2021.2.78242
DOI: 10.11588/ijodr.2021.2.78242
Metrics:
Barcaro U.
The biblical narration of Jacob's dream is analyzed in the light of current significant issues of dream research, specifically: the usefulness of historical data for the study of dreaming; the continuity theory; the phenomenological relationship between the dream experience and its sources; the relationship between music and dreaming; the latent role of archetypes in the construction of dreams; the significance of dreams for the cognitive study of religions; and the multiple levels of analysis of historically important dreams. Dream-evocative features in the biblical narration are also described, which are given by word-root recurrences and by the use of a "hapax legomenon" to indicate Jacob's vision. This analysis based on current dream research provides insights into Jacob's dream. In addition, Jacob's dream in itself is useful for dream research, because it highlights basic universal aspects of the dreaming experience. © 2021, International Journal of Dream Research.Source: International journal of dream research 14 (2021): 232–236. doi:10.11588/ijodr.2021.2.78242
DOI: 10.11588/ijodr.2021.2.78242
Metrics:
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journals.ub.uni-heidelberg.de | ISTI Repository | doi.org | CNR ExploRA
2022
Journal article
Closed Access
A reflection on Ernest Hartmann's equation between the central image in dreams and the objective correlative in poetry
Barcaro U.
Ernest Hartmann observed a close similarity between the central image in dreams (an image that can effectively represent the emotional content of a dream) and the objective correlative (defined by T.S. Eliot as "a set of objects, a situation, a chain of events which shall be the formula of that particular emotion"). This article argues that Hartmann's equation between central image and objective correlative is amply valid and can shed new light on the relationship between the esthetic experience and the dreaming experience. For this purpose, 3 points are underlined. First, the objective correlative is characterized by its multifaceted dream-like basis. Second, in light of the central role that Eliot attributed to the Italian medieval poets of the "Dolce Stil Nuovo," the historical significance of a dream reported by Dante is discussed. Third, Hartmann's equation can assume different aspects, especially regarding the either explicit or implicit (or partly implicit) relationship between objective correlative and dreaming. Among the numerous instances offered by cultures that are widely separated by space and time, the article considers examples taken from T.S. Eliot's "Ash Wednesday", Guido Cavalcanti's Sonnet XVIII, Dante's "Vita Nova", the Book of Genesis, Lucretius's "De Rerum Natura", a waka on the theme "Spring" by Fujiwara no Teika, and the lyrics of a song by Franco Battiato. The validity of Hartmann's equation suggests that the reference to dreaming, being common to both the art creator and the art receiver, plays a latent but basic role in the esthetic experience.Source: Dreaming (N.Y.N.Y.) (2022). doi:10.1037/drm0000204
DOI: 10.1037/drm0000204
Metrics:
Barcaro U.
Ernest Hartmann observed a close similarity between the central image in dreams (an image that can effectively represent the emotional content of a dream) and the objective correlative (defined by T.S. Eliot as "a set of objects, a situation, a chain of events which shall be the formula of that particular emotion"). This article argues that Hartmann's equation between central image and objective correlative is amply valid and can shed new light on the relationship between the esthetic experience and the dreaming experience. For this purpose, 3 points are underlined. First, the objective correlative is characterized by its multifaceted dream-like basis. Second, in light of the central role that Eliot attributed to the Italian medieval poets of the "Dolce Stil Nuovo," the historical significance of a dream reported by Dante is discussed. Third, Hartmann's equation can assume different aspects, especially regarding the either explicit or implicit (or partly implicit) relationship between objective correlative and dreaming. Among the numerous instances offered by cultures that are widely separated by space and time, the article considers examples taken from T.S. Eliot's "Ash Wednesday", Guido Cavalcanti's Sonnet XVIII, Dante's "Vita Nova", the Book of Genesis, Lucretius's "De Rerum Natura", a waka on the theme "Spring" by Fujiwara no Teika, and the lyrics of a song by Franco Battiato. The validity of Hartmann's equation suggests that the reference to dreaming, being common to both the art creator and the art receiver, plays a latent but basic role in the esthetic experience.Source: Dreaming (N.Y.N.Y.) (2022). doi:10.1037/drm0000204
DOI: 10.1037/drm0000204
Metrics:
See at:
Dreaming | psycnet.apa.org | CNR ExploRA
2023
Journal article
Restricted
La prima riunione di scienziati italiani
Grosso G., Barcaro U.
In un'Italia frammentata in molti stati, con popolazioni, tradizioni e assetti politici differenti, animata da moti insurrezionali che in poco più di due decenni sarebbero sfociati nell'unifica¬zione nazionale, Pisa accoglie nel 1839 gli scienziati provenienti da ogni sua parte. È il primo vero momento unitario di raccolta e confronto delle loro esperienze e del loro sapere. A centottanta anni di distanza da questo evento speciale vorremmo qui ripercorrerne brevemente il momento storico, ricordando le personalità e i contributi scientifici di maggior rilievo.Source: Quaderni di storia della fisica (Online) 29 (2023): 31–60. doi:10.1393/qsf/i2023-10114-8
DOI: 10.1393/qsf/i2023-10114-8
Metrics:
Grosso G., Barcaro U.
In un'Italia frammentata in molti stati, con popolazioni, tradizioni e assetti politici differenti, animata da moti insurrezionali che in poco più di due decenni sarebbero sfociati nell'unifica¬zione nazionale, Pisa accoglie nel 1839 gli scienziati provenienti da ogni sua parte. È il primo vero momento unitario di raccolta e confronto delle loro esperienze e del loro sapere. A centottanta anni di distanza da questo evento speciale vorremmo qui ripercorrerne brevemente il momento storico, ricordando le personalità e i contributi scientifici di maggior rilievo.Source: Quaderni di storia della fisica (Online) 29 (2023): 31–60. doi:10.1393/qsf/i2023-10114-8
DOI: 10.1393/qsf/i2023-10114-8
Metrics:
See at:
www.sif.it | CNR ExploRA
2002
Journal article
Unknown
An automatic method for the recognition and classification of the A-phases of the cyclic alternating pattern
Navona C., Barcaro U., Bonanni E., Di Martino F., Maestri M., Murri L.
Objective: The aim of the research has been to introduce an automatic method, simple from the mathematical and computational points of view, for the recognition and classification of the A-phases of the Cyclic Alternating Pattern. Method: The automatic method was based on the computation of five descriptors, which were derived from the EEG signal and were able to provide a meaningful data reduction. Each of them corresponded to a different frequency band. Results: The computation of these descriptors, followed by the introduction of two suitable thresholds and of simple criteria for logical discrimination, provided results with were in good agreement with those obtained with visual analysis. The method was versatile and could be applied to the study of other important microstructure phenomena by means of very small adaptations. Conclusions: The simplicity of the method lead to a better understanding and a more precise definition of the visual criteria for the recognition and classification of the microstructure phenomena.Source: Clinical neurophysiology 113 (2002): 1826–1831.
Navona C., Barcaro U., Bonanni E., Di Martino F., Maestri M., Murri L.
Objective: The aim of the research has been to introduce an automatic method, simple from the mathematical and computational points of view, for the recognition and classification of the A-phases of the Cyclic Alternating Pattern. Method: The automatic method was based on the computation of five descriptors, which were derived from the EEG signal and were able to provide a meaningful data reduction. Each of them corresponded to a different frequency band. Results: The computation of these descriptors, followed by the introduction of two suitable thresholds and of simple criteria for logical discrimination, provided results with were in good agreement with those obtained with visual analysis. The method was versatile and could be applied to the study of other important microstructure phenomena by means of very small adaptations. Conclusions: The simplicity of the method lead to a better understanding and a more precise definition of the visual criteria for the recognition and classification of the microstructure phenomena.Source: Clinical neurophysiology 113 (2002): 1826–1831.
See at: CNR ExploRA
2002
Journal article
Unknown
Significance of automatically detected word recurrences in dream associations in dreaming
Barcaro U., Calabrese R., Cavallero C., Diciotti R., Navona C.
Verbal data files including dream reports and associations with the report items were subjected to automatic analysis aiming at the recognition of word recurrences. The research was based on the following assumptions: the associations can provide information about the dream sources; the recognition of word recurrences in text files can be a useful tool for the study of dreaming; the identification of links between different dream sources can provide an interesting insight into the phenomenon of dreaming. The principal result obtained was that word recurrences often evidence possible significant links between dream sources. A number of the possible links evidenced by the automatic analysis not only escaped the subject's notice, but might also be unexpected for an analyzer not assisted by a computer.Source: Dreaming (N.Y.N.Y.) 12 (2002): 93–107.
Barcaro U., Calabrese R., Cavallero C., Diciotti R., Navona C.
Verbal data files including dream reports and associations with the report items were subjected to automatic analysis aiming at the recognition of word recurrences. The research was based on the following assumptions: the associations can provide information about the dream sources; the recognition of word recurrences in text files can be a useful tool for the study of dreaming; the identification of links between different dream sources can provide an interesting insight into the phenomenon of dreaming. The principal result obtained was that word recurrences often evidence possible significant links between dream sources. A number of the possible links evidenced by the automatic analysis not only escaped the subject's notice, but might also be unexpected for an analyzer not assisted by a computer.Source: Dreaming (N.Y.N.Y.) 12 (2002): 93–107.
See at: CNR ExploRA
2006
Journal article
Unknown
Un sistema automatico per l'analisi delle connessioni fra le sorgenti di memoria dei sogni
Barcaro U., Cavallero C., Navona C., Salvetti O.
A method is described for the automatic analysis of verbal data including sleep mentation. The results are represented by means of multigraphs and bipartite graphs characterized by quantitative parameters that can be subjected to statistical analyses.Source: Journal of psychophysiology 20 (2006): 98.
Barcaro U., Cavallero C., Navona C., Salvetti O.
A method is described for the automatic analysis of verbal data including sleep mentation. The results are represented by means of multigraphs and bipartite graphs characterized by quantitative parameters that can be subjected to statistical analyses.Source: Journal of psychophysiology 20 (2006): 98.
See at: CNR ExploRA
2006
Conference article
Unknown
A method for detection of transient events in EEG signals
Righi M., Starita A., Barcaro U., Erimakis S., Micheloyannis S.
A method is described for the detection of EEG transient events that are characterized by transient decrease in the correlation between homologous frequency-band components of different traces. It consists of the following steps: computation of frequency-band components; computation of normalized correlation; application of two thresholds (one for the recognition of an event, and the other for the measure of the event time-length). The method also provides a classification of the detected events. The results can be subjected to statistical analyses. An application is described to seizure-free EEGs of epileptic subjects.Source: Biopattern Brain Workshop, pp. 15–16, Göteborg, 18-19/05/2006
Righi M., Starita A., Barcaro U., Erimakis S., Micheloyannis S.
A method is described for the detection of EEG transient events that are characterized by transient decrease in the correlation between homologous frequency-band components of different traces. It consists of the following steps: computation of frequency-band components; computation of normalized correlation; application of two thresholds (one for the recognition of an event, and the other for the measure of the event time-length). The method also provides a classification of the detected events. The results can be subjected to statistical analyses. An application is described to seizure-free EEGs of epileptic subjects.Source: Biopattern Brain Workshop, pp. 15–16, Göteborg, 18-19/05/2006
See at: CNR ExploRA
2001
Conference article
Unknown
Analisi automatica del CAP in un paziente con infarto talamico bilaterale
Brotini S., Navona C., Di Martino F., Traino C., Barcaro U., Maestri M., Moscato G., Orlandi G., Bonanni E.
Lo scopo di questo studio e stata l'analisi quantitativa, mediante una semplice procedura automatica, del cyclic alternanting pattern (CAP) in un paziente con infarto talamico bilaterale. Durante la prima settimana dopo l'ictus il paziente trascorreva la maggior parte del giorno ad occhi chiusi, in uno stato quieto, simile al sonno, caratterizzato da un'attività EEG alpha-theta. La polisonnografia notturna rilevava una marcata alterazione della fase NREM con sonno REM conservato. Nelle settimane successive le alterazioni del ciclo sonno-veglia si sono progressivamente ridotte. L'analisi automatica e stata effettuata sulle registrazioni notturne corrispondenti al settimo ed al quarantesimo giorno dopo l'ictus. II segnale EEG e stato registrato con derivazione bipolare (F3-C3), filtrato tra 0.75 e 25 Hz, campionato a 64 Hz, e analizzato su Personal Computer. Sono state esaminate epoche, prive di artefatti, ciascuna di 512 secondi, corrispondenti agli stadi NREM. Sono state analizzate le seguenti bande di frequenza: delta (0.75-4 Hz); theta (4-8 Hz); alpha (8-12 Hz), e sigma (12.5-14.5 Hz). Per ciascuna banda di frequenza sono state calcolate le ampiezze medie su intervalli di tempo rispettivamente di 64 s e di 2 s. Mentre le ampiezze medie su intervalli di 64 s forniscono descrittori macrostrutturali, le ampiezze medie su intervalli di 2 s esprimono le variazioni transitorie dell'attività di banda sovraimposte all'attività di fondo. La differenza percentuale tra i valori delle due medie da una misura normalizzata di come varia l'ampiezza dell'attività di banda in un generico istante rispetto all'attività di tondo. I valori di tale descrittore sono stati calcolati ogni 0.5 s; sono state considerate indicative di fenomeni microstrutturali connessi all'incremento transitorio delle attività di banda le epoche caratterizzate da valori del descrittore maggiori di zero con almeno un valore maggiore di uno. In questo modo si misurava immediatamente la distanza temporale tra due epoche consecutive di incremento transitorio dell'attività di banda. Dai dati emerge una concordanza tra l'analisi automatica e l'analisi visuale del CAP e pertanto la metodica illustrata, semplice nella sua definizione matematica e facile da implementare su Personal Computer, può agevolare 10 studio della microstruttura del sonno anche in condizioni di patologia del sistema nervosa centrale.Source: 10° Congresso Nazionale Associazione Italiana di Medicina del Sonno, pp. 342–346, Udine, 1-4 Ottobre 2001
Brotini S., Navona C., Di Martino F., Traino C., Barcaro U., Maestri M., Moscato G., Orlandi G., Bonanni E.
Lo scopo di questo studio e stata l'analisi quantitativa, mediante una semplice procedura automatica, del cyclic alternanting pattern (CAP) in un paziente con infarto talamico bilaterale. Durante la prima settimana dopo l'ictus il paziente trascorreva la maggior parte del giorno ad occhi chiusi, in uno stato quieto, simile al sonno, caratterizzato da un'attività EEG alpha-theta. La polisonnografia notturna rilevava una marcata alterazione della fase NREM con sonno REM conservato. Nelle settimane successive le alterazioni del ciclo sonno-veglia si sono progressivamente ridotte. L'analisi automatica e stata effettuata sulle registrazioni notturne corrispondenti al settimo ed al quarantesimo giorno dopo l'ictus. II segnale EEG e stato registrato con derivazione bipolare (F3-C3), filtrato tra 0.75 e 25 Hz, campionato a 64 Hz, e analizzato su Personal Computer. Sono state esaminate epoche, prive di artefatti, ciascuna di 512 secondi, corrispondenti agli stadi NREM. Sono state analizzate le seguenti bande di frequenza: delta (0.75-4 Hz); theta (4-8 Hz); alpha (8-12 Hz), e sigma (12.5-14.5 Hz). Per ciascuna banda di frequenza sono state calcolate le ampiezze medie su intervalli di tempo rispettivamente di 64 s e di 2 s. Mentre le ampiezze medie su intervalli di 64 s forniscono descrittori macrostrutturali, le ampiezze medie su intervalli di 2 s esprimono le variazioni transitorie dell'attività di banda sovraimposte all'attività di fondo. La differenza percentuale tra i valori delle due medie da una misura normalizzata di come varia l'ampiezza dell'attività di banda in un generico istante rispetto all'attività di tondo. I valori di tale descrittore sono stati calcolati ogni 0.5 s; sono state considerate indicative di fenomeni microstrutturali connessi all'incremento transitorio delle attività di banda le epoche caratterizzate da valori del descrittore maggiori di zero con almeno un valore maggiore di uno. In questo modo si misurava immediatamente la distanza temporale tra due epoche consecutive di incremento transitorio dell'attività di banda. Dai dati emerge una concordanza tra l'analisi automatica e l'analisi visuale del CAP e pertanto la metodica illustrata, semplice nella sua definizione matematica e facile da implementare su Personal Computer, può agevolare 10 studio della microstruttura del sonno anche in condizioni di patologia del sistema nervosa centrale.Source: 10° Congresso Nazionale Associazione Italiana di Medicina del Sonno, pp. 342–346, Udine, 1-4 Ottobre 2001
See at: CNR ExploRA
2001
Conference article
Unknown
Analisi automatica della microstruttura dello stadio 4 del sonno umano
Di Martino F., Traino A. C., Navona C., Barcaro U., Bonanni E., Maestri M.
Lo studio del sonno è uno strumento importante per capire la qualità del nostro riposo e per diagnosticare varie patologie.Source: II congresso nazionale A.I.F.M. Associazione Italiana di Fisica in Medicina, pp. 502–503, Brescia, Italia, 12-16 giugno 2001
Di Martino F., Traino A. C., Navona C., Barcaro U., Bonanni E., Maestri M.
Lo studio del sonno è uno strumento importante per capire la qualità del nostro riposo e per diagnosticare varie patologie.Source: II congresso nazionale A.I.F.M. Associazione Italiana di Fisica in Medicina, pp. 502–503, Brescia, Italia, 12-16 giugno 2001
See at: CNR ExploRA
2001
Conference article
Unknown
Un metodo automatico per il riconoscimento e la classificazione delle fasi A del cyclic alternating pattern
Navona C., Barcaro U., Bonanni E., Di Martino F., Maestri M., Murri L.
An abstract is not available.Source: XI Congresso Nazionale Associazione Italiana Medicina del Sonno, Pisa, 14-17 ottobre 2001
Navona C., Barcaro U., Bonanni E., Di Martino F., Maestri M., Murri L.
An abstract is not available.Source: XI Congresso Nazionale Associazione Italiana Medicina del Sonno, Pisa, 14-17 ottobre 2001
See at: CNR ExploRA
2002
Conference article
Unknown
A method for the study of the connections between dream sources
Barcaro U., Calabrese R., Cavallero C., Diciotti R., Navona C.
An abstract is not availableSource: The Association for the Study of Dreans. 19th International Conference: Dreams and Cultures, pp. 13, Boston , USA, 15-19 June 2002
Barcaro U., Calabrese R., Cavallero C., Diciotti R., Navona C.
An abstract is not availableSource: The Association for the Study of Dreans. 19th International Conference: Dreams and Cultures, pp. 13, Boston , USA, 15-19 June 2002
See at: CNR ExploRA
2006
Software
Unknown
Metodo per il riconoscimento automatico di fenomeni transienti nellElettroencefalogramma umano
Barcaro U., Navona C., Righi M., Starita A., Micheloyannis S., Erimakis S.
Prodotto software per il riconoscimento e la classificazione automatica di eventi transienti nellelettroencefalogramma umano spontaneo. Questo prodotto è basato sullapplicazione di metodi lineari e non-lineari di analisi di segnali e su opportune query a database. Nuove applicazioni del metodo, precedentemente presentato su riviste internazionali, sono state presentate al Biopattern Workshop (Göteborg, maggio 2006).
Barcaro U., Navona C., Righi M., Starita A., Micheloyannis S., Erimakis S.
Prodotto software per il riconoscimento e la classificazione automatica di eventi transienti nellelettroencefalogramma umano spontaneo. Questo prodotto è basato sullapplicazione di metodi lineari e non-lineari di analisi di segnali e su opportune query a database. Nuove applicazioni del metodo, precedentemente presentato su riviste internazionali, sono state presentate al Biopattern Workshop (Göteborg, maggio 2006).
See at: CNR ExploRA