The influence of exercise-induced temperature elevations on the auditory brain-stem response (ABR).
The influence of exercise on the auditory brain-stem response (ABR) was examined in 16 healthy volunteers (8 female and 8 male). Ipsilateral ABR recordings were obtained before and after exercise on a bicycle ergonometer. The rise of body temperature so generated was 0.5-2.1 degrees C (mean, 1.3 degrees C) as measured in the contralateral external auditory meatus. Latencies of waves III and V (but not wave I) were found to be significantly lower immediately post-exercise (P less than 0.01). The temperature relations of the latency of wave V are described by the regression equation: Latency (ms) = 11.06-0.146 x temp. (degrees C). (The effects on amplitude were not significant, nor were male/female differences.) It is suggested that exercise hyperthermia could be an appropriate model for the evaluation of the ABR in fever.
Thomas
C J
CJ
Department of Physiology, Medical College of St. Bartholomew's Hospital, London, U.K.
Jones
J D
JD
Scott
P D
PD
Rosenberg
M E
ME
D000328:Adult; D000704:Analysis of Variance; D001831:Body Temperature / Q000502:physiology*; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D015444:Exercise; D005260:Female; D005334:Fever; D006801:Humans; D008297:Male; D012044:Regression Analysis