@inproceedings{oai:repo.qst.go.jp:00052999,
 author = {Kawano, Kimiko and Yamamoto, Mikio and Kokubo, Hideyuki and 河野 貴美子 and 山本 幹男 and 小久保 秀之},
 book = {Recent Advances in Human Brain Mapping(International Congress Series ; no.1232)},
 month = {},
 note = {EEG of Japanese martial artists were measured. A martial artist has to detect qi energy emitted by an attacker even from behind. During such peculiar concentration and also during deep meditaion, large alpha waves often appear on the frontal area and these frontal alpha waves tend synchronize with the occipital waves regarding pahse. In this experiment, two practitioners were placed in separate rooms and at a time set randomly during 80s of one trial, one practitioner (sender) emitted qi. The other one (reseiver) made a sign with a switch when he sensed the qi. A total of 45 trials were done and the receiver's EEGs were analyzed for each 5.12s of four peiods; they were (a) before the receiver's switch marker, (b) before sending qi, (c) during sending, and (d) after sending. At the time of actually receiving qi(c), the alpha waves appeared diffusely toward the frontal area. The alpha ratio of the frontal midline (Fz) to the occipital region (O2) was larger in period (c) than in (a). The lag time of alpha hase of Fz to O2 was smaller in (c) than in (a), which means the alpha waves became synchronous while actually receiving qi.},
 pages = {107--112},
 publisher = {Elsevier},
 title = {A study of alpha waves on the frontal area},
 year = {2002}
}