[A study of the P300 cognitive potential on mental deficiency in children].

Abstract

The study of 36 cases of P300 Cognitive Potential (P300 CP) of mental deficiency children have been made. The results of examination were abnormal in 31 cases (85%). In the 31 cases the latency of P300 the cognitive waves (P300 CW) were prolonged, the amplitude were reduced and the P300 CW disordered. After discussion of the relation among the P300 CW, the intelligence quotient (IQ) and the EEG, it were pointed out that P300 CP is as sensitive, objective, valuable indexes for checking and testing intelligence of mental deficiency children.