For Karl Lashley study on the effects of various sized cortical lesions on maze performance and the hypothesize that all cortical areas contribute equally to learning and memory, the current interpretation of these experiments is that all cortical areas do not contribute equally to memory, but memories are widely distributed.
Cortical areas are the parts of brain located in the cerebral cortex, which is associated with processes such as thought, consciousness, reasoning, emotion, and memory. Cortical lesions are seen to lead to memory loss as seen in the experiments correlated to the lesion size and not location. Hence, he concluded that all cortical areas contribute equally to learning and memory. However, recent studies have shown that three brain areas play a significant role in memories and all cortical areas do not contribute equally to memory, but memories are widely distributed.
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