Differences in stress reactivity of laboratory macaques measured by heart period and respiratory sinus arrhythmia

被引:0
|
作者
Bowers, CL [1 ]
Crockett, CM [1 ]
Bowden, DM [1 ]
机构
[1] Univ Washington, Reg Primate Res Ctr, Seattle, WA 98195 USA
关键词
Macaca fascicularis; individual differences; telemetry; vagal response;
D O I
10.1002/(SICI)1098-2345(1998)45:3<245::AID-AJP2>3.0.CO;2-W
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Some laboratory primates are more likely than others to react to anxiety-provoking stressors. Individuals that overreact to stressors may experience diminished psychological well-being and would be inappropriate for some experiments. The differences between reactive and nonreactive individuals may be reflected in heart period and respiratory sinus arrhythmia (RSA). Using surface electrodes and radio telemetry, we measured these two cardiac variables in seven male and ten female singly caged longtailed macaques (Macaca fascicalaris) when they were exposed to two stressors, a sudden noise (whistle test) and an unfamiliar technician wearing capture gloves (glove test). Behavior was videotaped during both tests. For the whistle test, cardiac data were recorded before, during, and after two 1 min whistle blasts separated by 90 min. For the glove test, data were recorded in 1 min blocks every 8 min over 96 min before, during, and after 1 min exposure to the gloved technician. Heart period was decreased and RSA was suppressed during both the whistle and glove exposures. After the whistle test, the cardiac activity of most subjects returned to baseline levels within 10 min. The glove test produced more extended suppression, with greater individual differences, than the whistle test. There were greater individual differences in RSA than in heart period. These enhanced individual differences were used to define stress reactors that differed from nonreactors in their cardiac data profiles. Of 16 subjects that completed the glove test, five were identified as reactors. (C) 1998 Wiley-Liss, Inc.
引用
收藏
页码:245 / 261
页数:17
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