Faculty Opinions recommendation of Unilateral lesions of the cholinergic basal forebrain and fornix in one hemisphere and inferior temporal cortex in the opposite hemisphere produce severe learning impairments in rhesus monkeys.

2002 ◽  
Author(s):  
Michael E Hasselmo
Keyword(s):  
Basal Forebrain ◽  
Rhesus Monkeys ◽  
Temporal Cortex ◽  
Inferior Temporal Cortex ◽  
Opposite Hemisphere ◽  
Learning Impairments ◽  
Cholinergic Basal Forebrain

Effect of Motion on the Recognition of Area by Rhesus Monkeys in a Pseudo-Matching Task

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 249-249
Author(s):  
H Malecki ◽  
S G Rosolen ◽  
R Bonnier
Keyword(s):  
Rhesus Monkeys ◽  
Visual Recognition ◽  
Temporal Cortex ◽  
The Other ◽  
Inferior Temporal Cortex ◽  
Matching Task ◽  
Target Area ◽  
Target Speed ◽  
Cortical Areas ◽  
Better Than

We examined the effect of target motion on the visual recognition of target area in rhesus monkeys. We used a pseudo-matching visual task, where ten adult monkeys were trained to recognise and point out the bigger one of two achromatic squares of different areas but having the same luminance and presented on the same background. The video screen was placed 0.5 m in front of their faces. The two areas were randomly sampled out of five areas (49, 72.25, 100, 132.25, and 169 mm2). The speed of the targets was varied in this paradigm (0, 6, 11, 16, 21, or 26 deg s−1). Performance in terms of area recognition thresholds was calculated for each monkey on the basis of 100 trials in standardised environmental conditions. Statistical analysis showed that performance with a target speed of 16 deg s−1 was significantly better than in the other conditions ( p<0.01). We conclude that this pseudo-matching task, based on a cognitive paradigm, reveals a significant effect of motion on the visual recognition of area in rhesus monkeys. The activities of specific cortical areas (V4 and V5) should be studied by other techniques in order to characterise those involved in remembering an object's qualities and those responding to motion. The links between V4, V5, and inferior temporal cortex could be tested with the aid of this pseudo-matching task.

The amygdala – responsible for memories of reward as well as punishment?

2000 ◽  
Vol 23 (2) ◽  
pp. 213-214
Author(s):  
Amanda Parker
Keyword(s):  
Basal Forebrain ◽  
Temporal Cortex ◽  
Inferior Temporal Cortex ◽  
Association Learning ◽  
Visual Objects ◽  
Reward Value ◽  
Rapid Modulation ◽  
Pass Through

Rolls's proposal that the amygdala is critical for the association of visual objects with reward is not consistent with recent ablation evidence. Stimulus-reward association learning is more likely to depend on basal forebrain efferents to the inferior temporal cortex, some of which pass through the amygdala. It is more likely that the amygdala is involved in rapid modulation of stimulus reward value.

scholarly journals Mild Perceptual Categorization Deficits Follow Bilateral Removal of Anterior Inferior Temporal Cortex in Rhesus Monkeys

2016 ◽  
Vol 36 (1) ◽  
pp. 43-53 ◽  
Author(s):  
N. Matsumoto ◽  
M. A. G. Eldridge ◽  
R. C. Saunders ◽  
R. Reoli ◽  
B. J. Richmond
Keyword(s):  
Rhesus Monkeys ◽  
Temporal Cortex ◽  
Inferior Temporal Cortex ◽  
Perceptual Categorization
Sign in / Sign up

Export Citation Format

Share Document