?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F&rft.title=Machine+Learning-Based+Comparison+of+EEG+Signals+During+Associative+Equivalence+Learning+with+Visual+Stimuli+of+Varying+Complexity&rft.creator=+Kiss+%C3%81d%C3%A1m&rft.subject=03.01.05.01.+Neur%C3%A1lis+k%C3%A9palkot%C3%A1s+%C3%A9s+neur%C3%A1lis+sz%C3%A1m%C3%ADt%C3%A1studom%C3%A1ny&rft.description=Associative+learning+is+a+fundamental+cognitive+process+that+enables+individuals+to+form+connections+between+stimuli+and+responses.+This+thesis+investigates+the+neural+mechanisms+underlying+associative+learning+using+electroencephalography+(EEG)+and+machine+learning+techniques.+The+study+compares+two+tasks%3A+the+original+Rutgers+Acquired+Equivalence+Test+(RAET)+and+a+simplified%2C+feature-reduced+version+called+Polygon.+By+analyzing+cortical+activity%2C+the+research+aims+to+understand+how+stimulus+complexity+and+verbalizability+influence+learning+processes.%0D%0A%0D%0AEEG+signals+were+recorded+from+participants+performing+both+tasks+and+preprocessed+using+Independent+Component+Analysis+(ICA)+to+isolate+neural+components.+Machine+learning+classifiers%2C+including+Long+Short-Term+Memory+(LSTM)+networks+and+Support+Vector+Classification+(SVC)%2C+were+employed+to+detect+differences+in+brain+activity+between+the+two+tasks.+The+analysis+focused+on+distinct+brain+regions%2C+such+as+the+frontal%2C+temporal%2C+occipital%2C+and+parietal+lobes%2C+to+assess+their+roles+in+learning%2C+attention%2C+and+decision-making.%0D%0A%0D%0AKey+findings+reveal+that+the+frontal+region+shows+the+most+significant+differences+between+the+RAET+and+Polygon+tasks.+These+differences+are+linked+to+varying+levels+of+attention%2C+memory+load%2C+and+decision-making+processes+influenced+by+stimulus+complexity.+In+contrast%2C+the+parietal+region+exhibited+minimal+variation%2C+suggesting+its+role+is+less+affected+by+stimulus+features.%0D%0A%0D%0AAlthough+limited+in+sample+size%2C+this+study+demonstrates+the+effectiveness+of+combining+EEG+with+machine+learning+to+uncover+cortical+activity+patterns+in+associative+learning.+The+findings+provide+a+foundation+for+future+research+and+highlight+the+potential+of+these+methods+to+advance+our+understanding+of+cognitive+processes.&rft.date=2025&rft.type=Disszert%C3%A1ci%C3%B3&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.rights=cc_by_nc_4&rft.identifier=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F1%2Fthesis.pdf&rft.format=application%2Fpdf&rft.language=hu&rft.rights=cc_by_nc_4&rft.identifier=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F2%2Ftezisfuzet.pdf&rft.format=application%2Fpdf&rft.language=en&rft.rights=cc_by_nc_4&rft.identifier=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F3%2Fbooklet.pdf&rft.format=application%2Fpdf&rft.language=hu&rft.identifier=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F4%2Falairt.PDF&rft.format=application%2Fpdf&rft.language=en&rft.identifier=https%3A%2F%2Fdoktori.bibl.u-szeged.hu%2Fid%2Feprint%2F12478%2F24%2Fkiss_related_publications.pdf&rft.identifier=+++Kiss+%C3%81d%C3%A1m%0A+++Machine+Learning-Based+Comparison+of+EEG+Signals+During+Associative+Equivalence+Learning+with+Visual+Stimuli+of+Varying+Complexity.%0A++Doktori+%C3%A9rtekez%C3%A9s%2C+Szegedi+Tudom%C3%A1nyegyetem+(2000-).+%0A(2025)+++++&rft.language=eng