下方移動視標を用いた見越し反応に関与する大脳皮質の活動様式

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  • The cerebral cortex activity patterns related to the coincidence anticipation timing task using a downward moving visual target
  • カホウ イドウ シヒョウ オ モチイタ ミコシ ハンノウ ニ カンヨスル ダイノウ ヒシツ ノ カツドウ ヨウシキ

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<p>  In the present study, we attempted to clarify the activity pattern of the cerebral cortex that is involved in a coincidence anticipation timing task using a downward moving visual target. The subjects were ten healthy adult males. All the subjects were right-handed. The tasks consisted of a non-coincidence anticipation timing task as the control task and a coincidence anticipation timing task using a downward moving visual target on a computer display. Both tasks were carried out on a computer display placed at approximately 1.3 m from the subject. An electroencephalogram (EEG) was recorded from electrodes placed at 128 sites on the subjects’ scalp. The EEG was divided into the frequency band of the alpha component (8-13 Hz) and the beta component (13-30 Hz) by fast Fourier Transform (FFT) analysis and then analyzed. In addition, the alpha and beta components were each compared for 18 sites, based on the international 10/20 system without Cz between the control task and the coincidence anticipation timing task. </p><p>  The results showed that the alpha component decreased significantly at F7 and T3 in the coincidence anticipation timing task compared with that of the control task, the beta component increased significantly at C4, T3, and P3, and the beta component significant decreased at Fp1 and Fp2. These results of a comparison between two tasks, suggest that parietal, temporal, motor, premotor, and frontal pole areas are involved with the execution of the coincidence anticipation timing task using a downward moving visual target.</p>

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