Rate of Hanger Reflex Occurrence: Unexpected Head Rotation on Fronto-temporal Head Compression

反射 感觉 主管(地质) 颈肌张力障碍 志愿者 医学 心理学 听力学 肌张力障碍 物理医学与康复 麻醉 神经科学 地貌学 生物 农学 地质学
作者
Takashi Asahi,Mitsuru Sato,Hiroyuki Kajimoto,Masaki Koh,Daina Kashiwazaki,Satoshi Kuroda
出处
期刊:Neurologia Medico-chirurgica [Japan Neurosurgical Society]
卷期号:55 (7): 587-591 被引量:4
标识
DOI:10.2176/nmc.oa.2014-0324
摘要

When the head is encircled with a wire clothes hanger and the unilateral fronto-temporal region is compressed, the head rotates unexpectedly. As the mechanism is unclear, however, we have temporarily named this phenomenon as the "hanger reflex." We previously reported a case wherein this phenomenon was applied to treat cervical dystonia. Because little is known about this phenomenon, we determined how often this phenomenon is observed in healthy subjects. Study participants were 120 healthy Japanese adults (60 men and 60 women) aged 19-65 years. A wire clothes hanger was applied to each subject's head. The longer side of the hanger was attached over the volunteer's fronto-temporal regions on both sides of the head in succession (i.e., two applications per volunteer). We evaluated whether the subjects felt the sensation of head rotation by using a questionnaire. The sensation of head rotation was observed in 95.8% of subjects. There were five non-responders (4.2%). In 85.4% of the trials, head rotation was observed in the direction that coincided with the side compressed by the hanger. There were no differences in responses between genders. The incident rate of the hanger reflex was remarkably high and most likely represents a prevalent phenomenon in humans. The mechanism underlying the reflex remains unknown. Further research should be performed to elucidate the underlying causes of the hanger reflex, which represents a potential treatment for cervical dystonia.

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