NO TO HATTATSU
Online ISSN : 1884-7668
Print ISSN : 0029-0831
ISSN-L : 0029-0831
Developmental Changes of Awareness during Passive and Active Attentions
Evaluation of Serial Event-Related Potentials (N130, N180, P250)
Chikako OnoMasao AiharaKazuo HatakeyamaYuhko KamiyaHideaki KanemuraYoshimi SataShinpei Nakazawa
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JOURNAL FREE ACCESS

1999 Volume 31 Issue 6 Pages 511-518

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Abstract
Serial event-related potentials (ERPs), especially the negative components before P300, were recorded to evaluate the developmental changes of awareness, or intentional attention. In this study, 36 healthy children (5-16 years of age) and eight healthy adults (19-37 years) were told to perform two attentive para.-digms: passive and active. Each test condition consisted of 16 electrical stimuli. Four trials were averaged in sequence and then evaluated as serial four blocks.
With repetition in both passive and active attentive paradigms the amplitude of N130 was not attenuated until six years old. During active attention, N180 remained undiminished in adolescents and adults. The amplitude of P250 decreased with repetition during passive attention in children over seven years old, but was not attenuated during active attention in adults.
These results suggest that N130 reflects the orienting reflex, and that N180 is associated with the process to maintain awareness.
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© Japanese Society of Child Neurology
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