期刊
BEHAVIORAL NEUROSCIENCE
卷 123, 期 6, 页码 1346-1352出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0017314
关键词
learning; Pavlovian conditioning; cerebellum; timing
资金
- National Institute for Mental [080005]
The experiment monitored eyelid responses bilaterally during delay eyeblink conditioning in rat. Rats were given paired or unpaired training with a tone or light conditioned stimulus (CS) and a unilateral periorbital shock unconditioned stimulus (US) Rats given paired training acquired high levels of conditioned responses (CRs), which occurred in both eyelids. However, acquisition was faster, and the overall percentage of CRs was greater in the eyelid that was ipsilateral to the US CRs in the eyelid ipsilateral to the US also had shorter onset latencies and larger amplitudes than CRs in the contralateral eyelid Both eyelids consistently showed high percentages of unconditioned responses (UR) to the US, and the UR amplitude decreased across training sessions in the paired group. The present study demonstrated that CRs occur robustly in both eyelids of rats given eyeblink conditioning, which is similar to previous findings in humans and monkeys. The results also showed that conditioning occurs more prominently in the eyelid that is ipsilateral to the US, which is similar to previous findings in humans, monkeys, dogs, and rabbits.
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