Subcortical lesions and retention of a brightness discrimination in the rat: Appetitive vs. aversive motivation
نویسنده
چکیده
Thirsty rats, previously trained to approach a white card and avoid an adjacent black card to obtain water, sustained discrete bilateral lesions to certain brainstem sites and were subsequently tested for retention. Those lesion placements producing retention deficits on this appetitively motivated visual discrimination problem closely corresponded with those producing retention deficits on aversively motivated visual discrimination problems.
منابع مشابه
Lesions of nucleus accumbens disrupt learning about aversive outcomes.
Nucleus accumbens (NAcc) is critical for encoding and using information regarding the learned significance of cues predictive of reward. However, its role in processing information about cues predictive of aversive outcomes is less well studied. Here, we examined the effects of NAcc lesions in an odor-guided discrimination task in which rats use odor cues predictive of either appetitive or aver...
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