Facial EMG responses to noise.
Tension of the forehead increases as a response to unpleasant stimuli. In three experiments EMG activity in corrugator muscle was measured to test this response as an indicator of noise annoyance. In Exp. 1 (n = 24) monotonic sound level-response functions were obtained for four levels of 100- and 1000-Hz tones. In Exp. 2 (n = 20) recordings were made during work with a simple and a difficult task in a group of women and a group of men. Larger responses were obtained during the difficult task, especially during noise exposure. The response was much larger for the women. Exp. 3 (n = 24) showed that the sex difference was unaffected by a correction for differences in maximum level of corrugator response. Rated annoyance was a linear function of log EMG.
Kjellberg
A
A
Unit of Psychophysiology, National Institute of Occupational Health, Solna, Sweden.
Sköldström
B
B
Tesarz
M
M
Dallner
M
M
D000328:Adult; D000339:Affect / Q000502:physiology; D001143:Arousal / Q000502:physiology*; D001288:Attention / Q000502:physiology; D004576:Electromyography; D005152:Facial Muscles / Q000502:physiology*; D005260:Female; D005783:Gender Identity; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise / Q000009:adverse effects*; D011340:Problem Solving / Q000502:physiology; D011603:Psychophysiology; D011930:Reaction Time / Q000502:physiology