?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Developmental+changes+in+the+theta+response+system%3A+a+single-sweep+analysis&rft.creator=Yordanova%2C+Juliana&rft.creator=Kolev%2C+Vasil&rft.subject=Behavioral+Neuroscience&rft.subject=Cognitive+Psychology&rft.subject=Developmental+Psychology&rft.subject=Neurophysiology&rft.subject=Neuropsychology&rft.subject=Physiological+Psychology&rft.description=Recently%2C+increased+interest+was+focused+on+the+EEG+frequency+responses+in+the+theta+(4-7+Hz)+range+because+of+their+association+with+stimulus+information+processing.+However%2C+it+is+not+known+whether+the+event-related+theta+response+depends+on+the+development+of+the+spontaneous+theta+activity+and+how+it+varies+with+age+in+children.+In+the+present+study%2C+a+single-sweep+analysis+was+applied+to+assess+the+developmental+changes+in+the+event-related+EEG+theta+activity.+Auditory+passive%2C+oddball+target%2C+and+standard+event-related+potentials+(ERPs)+were+recorded+at+Fz%2C+Cz%2C+and+Pz+from+50+children+aged+6-11+years+and+10+young+adults.+Theta+responses+were+analyzed+in+two+time+windows+of+the+post-stimulus+epochs+for+three+single-sweep+parameters%3A+amplitude%2C+phase-locking+with+stimulus%2C+and+enhancement+relative+to+prestimulus+activity.+For+all+three+types+of+stimuli+adults+had+theta+responses+with+lower+amplitude%2C+higher+enhancement%2C+and+stronger+phase-locking+than+those+of+children.+Unlike+adults%2C+no+reliable+differences+between+the+early+and+late+theta+response+were+found+for+children.+Significant+developmental+changes+were+observed+for+theta+response+amplitude+that+decreased+and+phase-locking+of+early+theta+responses+that+increased+with+advancing+age.+These+findings+indicate+that+the+theta+component+of+the+auditory+ERP+differs+remarkably+between+children+and+adults+and+undergoes+developmental+alterations%2C+possibly+reflecting+specific+differences+in+stimulus+information+processing.&rft.date=1997&rft.type=Preprint&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F54%2F1%2Fthetade.htm&rft.identifier=++Yordanova%2C+Juliana+and+Kolev%2C+Vasil++(1997)+Developmental+changes+in+the+theta+response+system%3A+a+single-sweep+analysis.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F54%2F