Health and Behavior Sciences
Online ISSN : 2434-7132
Print ISSN : 1348-0898
The relationship between accuracy of timing response in the coincidence anticipation timing task and brain wave component
Toru OzawaAkio MoriMasaki TakayoseRyo KoshizawaKazuma OkiYasunori KitaMasami OsawaYoshihiro MatsumuraShigenobu Arai
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2010 Volume 9 Issue 1 Pages 17-22

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Abstract

  We investigated the occurrence pattern of the alpha and beta wave components of electroencephalograms (EEGs) in a timing control task to clarify the nature of the cerebral activity that is responsible for adjusting the temporal accuracy of movement.

  The subjects were 12 healthy right-handed adults. We used 2 tasks: a smooth pursuit eye movement task was the control task, and a coincidence anticipation timing task was considered as the timing task. In addition, timing responses were divided into premature response, correct response, and delayed response on the basis of the response time. Both tasks were performed using a computer display placed approximately 1.3 m away from the subject. The EEGs were recorded using electrodes placed at 128 sites on the scalp. Fast Fourier transform analysis was performed to separate the EEG into the frequency bands for the alpha and beta components. The obtained bands were compared at 18 sites by using the international 10/20 system; the Cz site was not considered.

  In the premature response, we observed a decrease in the beta component in the right parietal area. We considered that this reflects a reduction in visual attention. In the correct response, we observed a decrease in the alpha component in the right parietal area and an increase in the beta component in the right and left occipital areas. These results reflect enhancement of visual attention. In the delayed response, we observed a decrease in the right lateral prefrontal cortex. This result indicates a decrease in the visual attention because of masking of the visual target.

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© 2010 Health and Behavior Sciences
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