Hypothermia differentially affects tuning curves generated by forward and by simultaneous masking.
In the gerbil maintained at euthermic (37.5 degrees C) conditions, forward masking produces a compound action potential tuning curve (CAP TC) which is less sensitive but more sharply tuned than that which is generated by simultaneous masking. These differences between forward- and simultaneously-masked CAP TCs are minimized at hypothermic (30 degrees C) conditions. The unmasking effect occurs at both temperatures, suggesting that hypothermia does not exert these changes by eliminating two-tone suppression.
Henry
K R
KR
Department of Psychology, University of California, Davis 95616.
Price
J M
JM
Sweet
R J
RJ
D000222:Adaptation, Physiological; D000344:Afferent Pathways / Q000502:physiology; D000818:Animals; D001309:Auditory Threshold / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005849:Gerbillinae; D007035:Hypothermia / Q000503:physiopathology*