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SYNOPSIS

Finger and head temperature, frontalis electromyography (EMG), heart rate, and finger pulse amplitude (FPA) were measured from eight migraine headache patients both during and between migraine headaches. T-tests for correlated measures revealed significant differences between the headache-present and headache-free states in frontalis EMG and finger pulse amplitude, but not in the measures of temperature or heart rate. During headaches EMG was 260% greater while finger pulse amplitude constricted to about 25% of the headache-free estimates.