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BMS1052 Human Neurobiology > Cortex > Flashcards

Flashcards in Cortex Deck (7):
1

What is the outcome of lesions in area 6 (part of frontal lobe in front of area 4) and area 4 (primary motor cortex)?

Lesions in area 4 impair ability to generate simple movements.
Lesions in area 6 impair ability to generate complex movements about several joints.

2

What are the two divisions of area 6?

PMA (premotor areas)- sensory guided movements
SMA (supplementary motor area)- memory guided movements

3

How much of the CNS's neurons does the cerebellum contain?

About 50%

4

What is the vestibulocerebellum?

Receives inputs from the vestibular system and so is important for balance, posture and gait.

5

What is the spinocerelellum?

Receives information from the spinal cord. Involved in identifying the position of limbs and control of ongoing limb movements.

6

What is the cerebrocerebellum?

Receives information from the cerebral cortex (motor and sensory information). Important for planning, modifying and learning movements (muscle memory).

7

Does the cerebrocerebellum control the ipsilateral or contralateral side of the body?

The ipsilateral side and is connected to the contralateral cerebral hemisphere.