Lateralization for orientation in split-brain monkeys.
Split-brain monkeys learned with each cerebral hemisphere to discriminate lines differing in slope by 15 degrees. This type of spatial discrimination is usually performed better by the right hemisphere of humans. The left hemisphere of 8 monkeys learned this type of problem much more readily than did the right hemisphere. Learning to discriminate simple patterns in the same apparatus was done equally well by either hemisphere, demonstrating that the lateralized ability is specific to the stimuli employed.
D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology*; D004193:Discrimination Learning / Q000502:physiology; D004292:Dominance, Cerebral / Q000502:physiology*; D005260:Female; D005556:Form Perception / Q000502:physiology*; D008253:Macaca mulatta; D008297:Male; D009949:Orientation / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology; D014795:Visual Pathways / Q000502:physiology