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One large part of the cortex, the motor cortex, is known to control the body's voluntary muscle movements, including those involved in speech, while another large section, the auditory cortex, is known to control hearing.

The team focused on two main pathways, the M2-projecting, which is connected to the secondary motor cortex, and the AD-projecting, which is connected to the anterior thalamus.

Tremor was shown to improve with stimulation of tracts connected to the primary motor cortex and cerebellum, while bradykinesia was associated with the supplementary motor cortex.

The study revealed a transformation in the working memory circuits located in the secondary motor cortex as the mice repeated the task through time.

The basal ganglia receives signals from the motor cortex as skaters leap and twirl in the air.