in children with minor nervous dysfunction ( aged 6 -- 8 ; 3 years ) and mongoloid children ( 5 ; 6 -- 11 years ) as well as in younger and older normal children ( 3 ; 9 -- 5 ; 5 resp . 5 ; 6 -- 7 ; 6 years ) the changes of eeg basic rhythm , heart rate and behaviour during defined mental work were observed .
C0008059
children
C1455726
older