Abstract:
:A comparison of the interoceptive sensory consequences of cholecystokinin, bombesin, and 1-h food deprivation was conducted in rats. In two experiments, rats were first trained to use stimuli arising from different degrees of food deprivation (1 and 24 h or 1 and 4 h) as discriminative signals for shock, and were then tested for generalized control of discriminative responding (i.e., conditioned freezing) by cues arising from injection of 4 micrograms/kg (Experiment 1 only) and 8 micrograms/kg cholecystokinin (Experiment 1A only), 12 micrograms/kg bombesin (BBS), and isotonic saline, respectively. The effects of these peptides on food intake were also assessed. In both experiments, BBS and cholecystokinin (CCK) each suppressed feeding relative to saline; however, generalization of discriminative responding was obtained only following CCK. Generalization depended on prior learning about food deprivation cues--CCK had little effect on freezing in rats that showed weak discrimination performance (i.e., rats trained with 1- and 4-h deprivation cues). The results indicated that CCK but not BBS produces interoceptive cues like those occurring under 1-h food deprivation.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Davidson TL,Carretta JCdoi
10.1016/0031-9384(93)90182-fsubject
Has Abstractpub_date
1993-04-01 00:00:00pages
737-45issue
4eissn
0031-9384issn
1873-507Xpii
0031-9384(93)90182-Fjournal_volume
53pub_type
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journal_title:Physiology & behavior
pub_type: 临床试验,杂志文章
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journal_title:Physiology & behavior
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pub_type: 临床试验,杂志文章
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更新日期:1996-08-01 00:00:00
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journal_title:Physiology & behavior
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更新日期:1994-03-01 00:00:00
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更新日期:2002-05-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:1993-05-01 00:00:00
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