Eeg electroencephalograph used to trace patterns of

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Unformatted text preview: ons where seizures are occurring seizures The Cerebrum: Gray Matter The Cerebral Cortex Cerebral Gray matter Gray Neuron cell bodies Neuron Outer layer of cerebrum Outer Gray matter also in basal nuclei basal gray matter The Cerebrum: Basal Nuclei The Also called basal ganglia Also Areas of gray matter deep within the cerebrum the Putamen, globus pallidus, caudate nucleus caudate caudate nucleus lentiform nucleus (putamen + globus pallidus) globus The Cerebrum: Basal Nuclei The Receive input from cerebral caudate nucleus cortex cortex Project messages through thalamus to premotor and premotor and prefrontal areas prefrontal monitor and regulate movements from motor cortex cortex Regulate intensity of movements, inhibit unnecessary movements unnecessary putamen lentiform nucleus globus pallidus The Cerebrum: Basal Nuclei The caudate nucleus Assoc. with the subthalamic subthalamic nuclei and substantia nigra nuclei substantia (Parkinson’s disease) Damage to the Basal Nuclei Damage disturbance in posture and muscle tone muscle Involuntary movements, like tremors tremors Abnormal slowness of movement movement putamen lentiform nucleus globus pallidus Basal Ganglia Basal Responsible for: Selecting and maintaining purposeful motor activity while purposeful while suppressing unwanted or useless movement. Helping monitor and coordinate slow, sustained contractions slow, related to posture and support. Inhibiting muscle tone throughout the body (proper muscle Inhibiting throughout tone is normally maintained through a balance of excitatory and inhibitory inputs to the neurons that innervate skeletal muscle). Although there are many different neurotransmitters used within the basal ganglia (principally ACh, GABA, and ACh GABA, 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.

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