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Qigong is known as a treatment method of Chinese traditional medicine.The therapy of extemal-qigong refers to that a skilled qigong-master releases outgoing qi to act on the patients.It is also known that qigongmasters are able to release substantial outgoing qi that contains detectable infrared ray besides other components.Some of the snakes possess a pair of pit organs that is highly sensitive to infrared ray and is called infrared organs.In this study the crotaline snake was utilized as an experimental object.Hand wave facing directly to the pit organ at a room temperature of 25 ℃ acted as a stimulus and the discharge recordings were performed in the optic tectum and the trigeminal ganglion that innervate the pit organs.The ordinary subjects those were without qigong-training could elicit the response discharges in all the recording sites by waving hand at a distance not longer than 25 cm from the pit.However, a skilled qigong-master could initiate a response at a distance of 60 cm from the pit, and the responses elicited at a distance of 25 cm were significantly stronger than those elicited by the ordinary subjects.This data suggests that the snakes with infiared sensory pit organs could serve as a research model ofqigong study.