Question

Double dissociation of Radial arm maze

Answer 1

A double dissociation refers to different brain regions playing distinct roles in a task like the radial arm maze. Unilateral cortical excisions and bilateral hippocampal lesions can impair tactual-guided maze learning.

Step-by-step explanation:

A double dissociation in the context of the radial arm maze refers to the phenomenon where different brain regions play distinct roles in a task. In this specific case, the radial arm maze is a task used in neuroscience research to assess spatial learning and memory in animals. By manipulating specific brain regions in animals, such as the cortex or hippocampus, researchers can observe how the animals' performance in the maze is affected. For example, a study by Corkin (1965) found that unilateral cortical excisions and bilateral hippocampal lesions resulted in impairments in tactual-guided maze learning in humans.