Abstract
In this electromyographic study the activity in the temporal, masseter, sternocleidomastoid and nuchal muscles was recorded bilaterally in 2 males and 2 females during attacks of common migraine precipitated with specific beverages. Muscle activity continuously picked up with bipolar surface electrodes was supplemented by pain ratings at regular intervals, and registrations of similar duration were obtained with the patients free of headache. Recordings were divided into sections of 10 min, and during the last 2 min of each section the average level and the peak of the mean voltage were assessed with intervals of 5 sec. The average of these measurements in per cent of maximal activity was used to characterize the activity in a section. The time course of muscle activity varied between patients and muscles. In general, the migraine attack was characterized by a rise of activity from control level shortly before the patients experienced maximal pain, and location of the hyperactivity corresponded reasonably well with the spatial distribution of pain and tenderness. In two patients activity was sufficiently strong to account for a substantial part of their pain.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
