Richman J L, Haas D C
Headache and Migraine Center of Central New York, Syracuse.
Headache. 1994 Apr;34(4):211-3. doi: 10.1111/j.1526-4610.1994.hed3404211.x.
Fourteen patients with the continuous form of chronic tension-type headache maintained electromyographically documented relaxation of frontalis and trapezius muscles for two consecutive hours. The headache intensity of the group did not decrease from the beginning to the end of the recording session. This result is evidence against tonic muscle tension as the mechanism of this form of headache.
14名患有持续性慢性紧张型头痛的患者额肌和斜方肌通过肌电图记录显示连续两小时保持放松状态。该组患者的头痛强度在记录期开始到结束时并未降低。这一结果证明，强直性肌肉紧张并非这种类型头痛的发病机制。
