期刊
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL BEHAVIORAL PROCESSES
卷 34, 期 2, 页码 202-222出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0097-7403.34.2.202
关键词
CS-US interval; S-O associations; Pavlovian-instrumental transfer; motivational processes; timing processes
类别
-
资金
- NIMH NIH HHS [R01 MH065879-05, R01 MH065879] Funding Source: Medline
- PHS HHS [67378] Funding Source: Medline
- Wellcome Trust [065879, 065947] Funding Source: Medline
Four experiments examined the effects of varying the conditioned stimulus-unconditioned stimulus (CS-US) interval (and US density) on learning in an appetitive magazine approach task with rats. Learning was assessed with conditioned response (CR) measures, as well as measures of sensory-specific stimulus-outcome associations (Pavlovian-instrumental transfer, potentiated feeding, and US devaluation). The results from these studies indicate that there exists an inverse relation between CS-US interval and magazine approach CRs, but that sensory-specific stimulus-outcome associations are established over a wide range of relatively long, but not short, CS-US intervals. These data suggest that simple CR measures provide different information about what is learned than measures of the specific stimulus-outcome association, and that time is a more critical variable for the former than latter component of learning.
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