期刊
BEHAVIORAL NEUROSCIENCE
卷 123, 期 1, 页码 212-217出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0014122
关键词
conditioning; timing; rabbit; interstimulus interval
资金
- Informatics Circle of Research Excellence (iCORE), Alberta, Canada
The present experiment was aimed at characterizing the timing of conditioned nictitating membrane (NM) movements as function of the interstimulus interval (ISI) in delay conditioning for rabbits (Oryctolagus cuniculus). Onset latency and peak latency were approximately, but not strictly, scalar for all but the smallest movements (<. 10 mm). That is, both the mean and standard deviation of the timing measures increased in proportion to the ISI, but their coefficients of variation (standard deviation/mean) tended to be larger for shorter ISIs. For all ISIs, the absolute timing of the NM movements covaried with magnitude. The smaller movements (approximately,.11-.50 mm) were highly variable, and their peaks tended to occur well after the time of US delivery. The larger movements (>.50 mm) were less variable, and their peaks were better aligned with the time of US delivery. These results are discussed with respect to their implications for current models of timing in eyeblink conditioning.
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