Comparison of EEGs during Zen-meditation, qigong and Japanese Archery by one Person

Electroencephalograms (EEGs) during Japanese Zen-meditation (Zazen) and Chinese qigong and also while training Japanese archery on image were measured from one subject, who has been training Zen and archery for about 22 years and Qigong for about 10 years. The author, Kawano, has previously reported the differences of EEGs among qigong and two types of Zazen: Soto and Rinzai. Those subjects had been different for each, therefore, the results could have been caused by the personal difference. However, the present data by one trainee gave almost similar results. The indicator of concentration (alpha phase difference between 01 and Fp1), became smaller during qigong and the concentrating type of meditation, like Rinzai. Alpha wave frequency became slower during the very quiet and deep meditation. The change in alpha wave power was small, though, some differences were found in the ratios of the right to the left hemisphere (02/01) for each task.
Japanese archery was the task which needed the deepest concentration and fullest images.