Abstract:
:Rabbits with lesions of the midline thalamic nuclei were compared to rabbits with sham lesions on classical eyeblink (EB) and heart rate (HR) conditioning. Separate groups of sham and lesioned animals received either 25, 50 or 100% reinforcement with a periorbital shock unconditioned stimulus. Animals with lesions showed slightly impaired EB conditioning, compared to sham animals, under the partial but not continuous reinforcement schedules. Midline lesions also reduced the magnitude of the decelerative HR conditioned response under partial but not continuous reinforcement conditions. These findings suggest that the midline thalamic nuclei, like the mediodorsal nucleus of the thalamus, process information required for response selection under non-optimal learning conditions.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Buchanan SL,Powell DA,Beylotte FM 3rd,Penney Jdoi
10.1016/s0166-4328(98)00022-9subject
Has Abstractpub_date
1998-12-01 00:00:00pages
49-58issue
1-2eissn
0166-4328issn
1872-7549pii
S0166-4328(98)00022-9journal_volume
97pub_type
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