COMBINED, BUT NOT SINGLE, GUSTATORY NERVE TRANSECTION SUBSTANTIALLY ALTERS TASTE-GUIDED LICKING BEHAVIOR TO QUININE IN RATS

被引:60
作者
STJOHN, SJ [1 ]
GARCEA, M [1 ]
SPECTOR, AC [1 ]
机构
[1] UNIV FLORIDA,DEPT PSYCHOL,GAINESVILLE,FL 32611
关键词
D O I
10.1037/0735-7044.108.1.131
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
On the basis of electrophysiological studies, the glossopharyngeal nerve (GL) is far more responsive to quinine than the chorda tympani (CT) or greater superficial petrosal (GSP) nerves. The licking behavior of water-deprived rats to quinine (0.03-3.0 mM) and distilled water (10-s trials) was tested before and after various nerve transections. GL+CT section caused a substantial reduction in responsiveness. GSP+CT section had a moderate effect, and GL section alone produced only marginal impairments. Control, partially desalivated, and CT-sectioned rats were unaffected. Thus, the GL is not necessary for normal unconditioned taste-guided appetitive responsiveness to quinine, but the collective input from the GSP and CT is necessary and most likely sufficient. These data suggest that the quinine-evoked input of the GL and CT converge centrally.
引用
收藏
页码:131 / 140
页数:10
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