TY - JOUR
T1 - Decreased venous return is neither sufficient nor necessary to elicit ultrasonic vocalizations of infant rat pups
AU - Shair, Harry N.
AU - Jasper, Anna
PY - 2003/8
Y1 - 2003/8
N2 - It has been proposed that all ultrasonic vocalizations (USVs) in young rats are by-products of a cardiovascular response to decreased venous return, the abdominal compression reaction. To test the hypothesis, venous return was decreased in infant rats while USV and cardiovascular measures were monitored. Neither injection of the vasodilator sodium nitroprusside nor blood withdrawal from the superior vena cava or carotid artery elicited USV from pups in their home cage. Thus, decreased venous return by itself is not sufficient to elicit USV. To test whether venous return is a necessary mechanism for USV production, 5% dextrose in water or blood was infused intravenously into isolated pups that were producing USV. This artificial increase of venous return did not affect the rate of USV.
AB - It has been proposed that all ultrasonic vocalizations (USVs) in young rats are by-products of a cardiovascular response to decreased venous return, the abdominal compression reaction. To test the hypothesis, venous return was decreased in infant rats while USV and cardiovascular measures were monitored. Neither injection of the vasodilator sodium nitroprusside nor blood withdrawal from the superior vena cava or carotid artery elicited USV from pups in their home cage. Thus, decreased venous return by itself is not sufficient to elicit USV. To test whether venous return is a necessary mechanism for USV production, 5% dextrose in water or blood was infused intravenously into isolated pups that were producing USV. This artificial increase of venous return did not affect the rate of USV.
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U2 - 10.1037/0735-7044.117.4.840
DO - 10.1037/0735-7044.117.4.840
M3 - Article
C2 - 12931968
AN - SCOPUS:0043167862
SN - 0735-7044
VL - 117
SP - 840
EP - 853
JO - Behavioral Neuroscience
JF - Behavioral Neuroscience
IS - 4
ER -