?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Developmental+changes+in+the+alpha+response+system&rft.creator=Yordanova%2C+Juliana&rft.creator=Kolev%2C+Vasil&rft.subject=Theoretical+Biology&rft.subject=Developmental+Psychology&rft.subject=Neurophysiology&rft.subject=Physiological+Psychology&rft.description=Evoked+and+event-related+brain+potentials+(ERPs)+may+be+regarded+as+originating+from+the+reorganization+of+the+spontaneous+EEG+rhythms.+The+main+objective+of+the+present+research+was+to+study+the+alpha+responses+in+6-11+year-old+children+to+determine+whether+the+ability+to+reorganize+alpha+activity+after+external+stimulation+demonstrates+developmental+changes+that+could+reflect+variations+in+information+processing+with+increased+age.+A+total+of+50+children+aged+6-11+years%2C+divided+into+5+age+groups%2C+and+10+young+adults+were+assessed+in+a+passive+and+an+oddball+condition.+Alpha+responses+in+the+passive+and+non-target+ERPs+at+Fz%2C+Cz+and+Pz+were+analyzed+to+assess+quantitatively+the+repeatability+(phase-locking)+of+the+evoked+alpha+oscillations.+The+alpha+responses+in+6-11+year-old+children+were+different+from+those+in+adults%3A+(1)+Adults+had+significantly+lower+amplitude+and+stronger+phase-locking+than+children%3B+(2)+Adults+had+maximal+alpha+amplitudes+and+phase-locking+over+the+vertex%2C+whereas+children+displayed+maximal+responses+over+the+parietal+site%3B+(3)+The+phase-locking+of+eldest+(10-11+year-old)+children+was+as+strong+as+in+adults.+These+findings+indicate+that+the+alpha+response+system+is+functionally+involved+in+6-11+year-old+children%2C+though+its+development+is+not+complete+at+the+age+of+11%2C+and+the+magnitude+and+the+phase-locking+parameters+may+relate+to+different+functional+aspects+of+the+alpha+response+system.+Thus%2C+younger+children+do+produce+alpha+responses+during+information+processing%2C+but+are+not+able+to+engage+this+system+as+strongly+as+older+children+and+adults.&rft.date=1996-12&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F53%2F1%2Falphade.htm&rft.identifier=++Yordanova%2C+Juliana+and+Kolev%2C+Vasil++(1996)+Developmental+changes+in+the+alpha+response+system.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F53%2F