CORPUS-CALLOSUM - INTERACTIVE EFFECTS OF INFANTILE HANDLING AND TESTOSTERONE IN THE RAT

被引:29
作者
DENENBERG, VH [1 ]
FITCH, RH [1 ]
SCHROTT, LM [1 ]
COWELL, PE [1 ]
WATERS, NS [1 ]
机构
[1] UNIV CONNECTICUT,DEPT PSYCHOL,STORRS,CT 06268
关键词
D O I
10.1037/0735-7044.105.4.562
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Previous research found that the corpus callosum of male rats is larger than that of females; handling rats in infancy enhances this sex difference; and female rat pups, when handled in infancy and given 1 injection of testosterone propionate (TP) on Day 4 of life, will have callosa as large as those of males. In 2 experiments, male pups were castrated on Day 1 or received sham surgery; female pups were injected with TP on Day 4 or received an oil injection. Litters were handled or nonhandled. The previous finding that females, when handled and given TP in infancy, have a larger callosum was confirmed; however, a TP effect when administered to nonhandled females was not found. Because handling is known to cause a corticosterone release, these findings were interpreted as evidence of a developmental interaction between adrenal and gonadal hormones at the cortical level.
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收藏
页码:562 / 566
页数:5
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