Impairment of visual object-discrimination learning after perirhinal cortex ablation.

Journal article

Eight cynomolgus monkeys learned preoperatively 20 concurrent visual discriminations between pairs of colored shapes presented on a touch screen with 24-hr intertrial intervals. Three then received bilateral perirhinal cortex ablation, and 5 remained controls. The ablated monkeys were severely impaired in reacquiring the preoperatively acquired set, whereas postoperative learning of 20 new discriminations was not significantly affected. The task was then made more difficult. First, the number...

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Authors: Buckley, M; Gaffan, D

• Publication status: Published
• Journal: Behavioral neuroscience
• Volume: 111
• Issue: 3
• Pages: 467-475
• Publication date: 1997-06-01
• DOI: 10.1037//0735-7044.111.3.467
• EISSN: 1939-0084
• ISSN: 0735-7044
• Language: English
• Keywords: Brain Mapping; Macaca fascicularis; Animals; Discrimination Learning; Mental Recall; Attention; Male; Limbic System; Retention (Psychology); Color Perception; Pattern Recognition, Visual