자극간 간격에 따른 순막반응의 고전적 조건화 = Classical Conditioning of the Rabbit's Nictitating Membrane Response as a Function of CS - US Interval

다국어 초록 (Multilingual Abstract)

This investigation was conducted to determine the effects of CS-US interval (ISI) on the course of the aquisition of the rabbit's nictitating membrane response in classical conditioning. The interstimulus intervals of 100, 250, 450 and 800 msec. were administered, and the test results were analysed by the percentage of CRs, the onset latency and the peak latency. Thirty-two male albino rabbits were randomly assigned to one of the four groups. Acquisition training of 6 days started on the day following one day of adaptation session, and then one day of extinction session was followed. For the 6 days of acquisition training, each subject received 80 trials of which 72 trials were CS paired and 8 trials were CS-alone presentations. This 8 CS-alone trials were randomly assigned to one of each 10 trial-blocks of one day session. The percentage of CRs on the adaptation trials was less than 1% in all groups, while the percentage of CRs on the acquisition sessions was significant in between-group, between-session and interaction. But, in extinction session, there were significant results in between-group only. Specifically, during the acquisition training, the percentage of CRs of ISI 250 group (M = 8.13) was sinificantly higher than the other groups (p $lt; .05), and conversely ISI 100 group significantly lower than the other groups (p $lt; .05). But there was no difference between ISI 450 group (M = 5.95) and ISI 800 group (M = 5.12). The percentage of CRs of the extinction session, ISI 250 group was significantly (p $lt; .05) higher than the other groups, while ISI 100 group significantly (p $lt; .05) lower. Median of the onset latencies moved toward CS onset as session progressed in all groups, but that of peak latencies did not move the point in time where the US was delivered.