Subdivisions of Inferior Temporal Cortex in Squirrel Monkeys Make Dissociable Contributions to Visual Learning and Memory

Inferior temporal cortex of squirrel monkeys consists of caudal (ITC), intermediate (ITI), and rostral (ITR) subdivisions, possibly homologous to TEO, posterior TE, and anterior TE of macaque monkeys. The present study compared visual learning in squirrel monkeys with ablations of ITC; ITI and ITR (...

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Bibliographic Details
Published in:	Behavioral neuroscience Vol. 120; no. 2; pp. 423 - 446
Main Authors:	Weller, Rosalyn E, LeDoux, Mark S, Toll, Lisa M, Gould, Michelle K, Hicks, R. Alan, Cox, James E
Format:	Journal Article
Language:	English
Published:	Washington, DC American Psychological Association 01-04-2006
Subjects:	Analysis of Variance Animal Animal cognition Animal Learning Animals Behavior, Animal Biological and medical sciences Brain Mapping Discrimination Learning - physiology Fundamental and applied biological sciences. Psychology Learning Learning. Memory Macaca Male Memory Memory - physiology Monkeys Monkeys & apes Neurons Pattern Discrimination Pattern Recognition, Visual - physiology Photic Stimulation - methods Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Rodents Saimiri Saimiri - anatomy & histology Saimiri - physiology Temporal Lobe Temporal Lobe - anatomy & histology Temporal Lobe - physiology Visual Memory Visual Perception DNMS TE perirhinal TEO Visual memory Central nervous system Temporal cortex Perirhinal cortex Saimiri sciureus Discrimination task Encephalon Learning Vertebrata Mammalia Acquisition process Animal Primates Simioidea
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Summary:	Inferior temporal cortex of squirrel monkeys consists of caudal (ITC), intermediate (ITI), and rostral (ITR) subdivisions, possibly homologous to TEO, posterior TE, and anterior TE of macaque monkeys. The present study compared visual learning in squirrel monkeys with ablations of ITC; ITI and ITR (group ITRd); or ITI, ITR, and more ventral cortex, including perirhinal cortex (group ITR+), with visual learning in unoperated controls. The ITC monkeys had significant impairments on pattern discriminations and milder deficits on delayed nonmatching to sample (DNMS) of objects. The ITRd monkeys had deficits on some pattern discriminations but not on DNMS. The ITR+ monkeys were significantly impaired on DNMS and some pattern discriminations. These results are similar to those found in macaques and support the proposed homologies.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0735-7044 1939-0084
DOI:	10.1037/0735-7044.120.2.423