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Unformatted text preview: ons where
seizures are occurring
seizures The Cerebrum: Gray Matter
Neuron cell bodies
Outer layer of cerebrum
Outer Gray matter also in
basal gray matter The Cerebrum: Basal Nuclei
Also called basal ganglia
Areas of gray matter deep within
Putamen, globus pallidus,
caudate caudate nucleus lentiform nucleus (putamen + globus pallidus)
globus The Cerebrum: Basal Nuclei
Receive input from cerebral caudate nucleus
Project messages through
thalamus to premotor and
monitor and regulate
movements from motor
Regulate intensity of
lentiform nucleus globus pallidus The Cerebrum: Basal Nuclei
caudate nucleus Assoc. with the subthalamic
nuclei and substantia nigra
Damage to the Basal Nuclei
disturbance in posture and
Involuntary movements, like
Abnormal slowness of
lentiform nucleus globus pallidus Basal Ganglia
Basal Responsible for:
Selecting and maintaining purposeful motor activity while
suppressing unwanted or useless movement.
Helping monitor and coordinate slow, sustained contractions
related to posture and support.
Inhibiting muscle tone throughout the body (proper muscle
tone is normally maintained through a balance of excitatory
and inhibitory inputs to the neurons that innervate skeletal
Although there are many different neurotransmitters used
within the basal ganglia (principally ACh, GABA, and
dopamine) Basal Ganglia
Basal The function of the basal ganglia is often described in
terms of a "brake hypothesis".
To sit still, you must put the brakes on all movements
except those reflexes that maintain an upright posture.
To move, you must apply a brake to some postural
reflexes, and release the brake on voluntary movement....
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This note was uploaded on 12/08/2011 for the course AMY 2A taught by Professor Jamesivey during the Spring '06 term at Riverside Community College.
- Spring '06