Question

What input does the cerebro-cerebellum receive?

a. Motor commands from the cortex
b. Proprioceptive and tactile information from the spinal cord
c. Visual signals from the optic nerve
d. Auditory stimuli from the cochlea

Answer 1

The cerebro-cerebellum receives motor commands from the cortex and sensory feedback, especially proprioceptive information from the inferior olive in the medulla. It compares intended and actual movements to coordinate and correct motor actions.

Step-by-step explanation:

The cerebro-cerebellum receives input primarily in the form of motor commands from the cortex. When the primary motor cortex of the frontal lobe sends a command to initiate an action such as walking, a copy of that command is simultaneously sent to the cerebellum. The cerebellum also receives sensory feedback, particularly from proprioceptive sources via the inferior olive in the medulla, informing it of the body's position and movement. This allows the cerebellum to compare the intended movement with the actual movement occurring, and if necessary, issue corrective action to adjust for any discrepancies. Hence, the cerebro-cerebellum plays a critical role in ensuring smooth and coordinated movements by comparing motor commands and sensory feedback.