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Corniani, Giulia (2018) Classification of EEG and fNIRS signals from Completely Locked-in State Patients for a Brain-Computer Interface communication system. [Magistrali biennali]

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People suffering from complete motor paralysis with no severe deficiency in cognitive abilities, syndrome called Completely Locked in State (CLIS), remain aware of their surroundings without being able to interact and communicate in any way. In this context, the only possibility of communicating is by the techniques of Brain-Computer Interface. In this work, the focus is on the features extraction and selection on EEG and fNIRS signals and, finally, on the combination of the two to develop a system capable of classifying affirmative and negative answers from users in CLIS. The analysis considers the data collected in 4 visits to one patient. The choice to focus on a single case was made because the psychophysical considerations on the state of the patient are fundamental interpreting the results and the author of this work had the opportunity to participate directly in some acquisition. Offline analysis led to good results in the classification of fNIRS signals. Once again, using EEG signals it was not possible to successfully classify yes/no answers. Finally, the combination of EEG and fNIRS features did not improve the performance of the system.

Item Type:Magistrali biennali
Corsi di Diploma di Laurea:Scuola di Ingegneria > Bioingegneria
Scuola di Ingegneria > Bioingegneria
Uncontrolled Keywords:BCI, EEG, fNIRS, ALS, biological signals
Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-INF/06 Bioingegneria elettronica e informatica
Codice ID:61632
Relatore:Bertoldo, Alessandra
Correlatore:Chaudhary, Ujwal and Birbaumer, Niels
Data della tesi:12 December 2018
Biblioteca:Polo di Ingegneria > Biblioteca di Ingegneria dell'Informazione e Ingegneria Elettrica "Giovanni Someda"
Tipo di fruizione per il documento:on-line per i full-text
Tesi sperimentale (Si) o compilativa (No)?:Yes

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