title: The frontal electromyographic adaptation response. A potential source of confounding.
abstract: Undergraduates were recruited to provide a descriptive analysis of the frontal electromyographic (EMG) adaptation response. Following placement of sensors, subjects were instructed to lie quietly for 15 minutes. Averaging data across subjects, a statistically significant adaptation response was produced in the direction of relaxation that required about 11 minutes to stabilize. The adaptation course varied greatly among subjects as a function of the initial EMG value. A criterion of stability was recommended that would individualize the adaptation period.
mesh_terms: D004576:Electromyography; D005152:Facial Muscles / Q000502:physiology*; D005260:Female; D006185:Habituation, Psychophysiologic / Q000502:physiology*; D006801:Humans; D008297:Male; D012107:Research Design