During an operation on the brain in a laboratory animal, it was found that when some parts of the cortex are touched

During an operation on the brain in a laboratory animal, it was found that when some parts of the cortex are touched, involuntary movements are observed. Explain this observation.

In front of the central sulcus, there are motor centers of the cortex that control the functional activity of certain muscle groups, therefore, irritation of these zones during the operation can cause involuntary movements.

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