注意集中時における感覚刺激と誘発脳波

概要

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Nine healthy male medical students were examined by TAF testing, EEG, auditory evoked response (AER) and visual evoked potential (VEP). The characteristics of both AER and VEP during concentration of attention were analyzed in relation to the EEG and TAF-test.1. The EEG during TAF testing showed a definite decrease of α wave. No significant change in TAF values was observed in rest and auditory or photic stimulation.2. The AER, both in rest and during TAF-testing, showed no significant change in regard to the latency of each wave, but the amplitude of Pi-N1 from mid-occipital leads was significantly increased during TAF testing.3. No significant difference was observed in the latencies or amplitudes of VEP in rest and during TAF-testing.AER changes during TAF testing when the activity of the cerebral cortex reflects the attentional concentration to the light source. However, under the same condition no significant change was observed in VEP.These results suggest that, under attentional concentration to a given stimulus, there is an increased reaction to a stimulus of different nature from the original one, and no reaction to a stimulus of similar nature.
日本衛生学会の論文