Class Notes (1,100,000)
CA (630,000)
McGill (30,000)
PSYC (4,000)
PSYC 211 (200)
Lecture 10

PSYC 211 Lecture Notes - Lecture 10: Balance Disorder, Globus Pallidus, Chorea


Department
Psychology
Course Code
PSYC 211
Professor
Yogita Chudasama
Lecture
10

This preview shows page 1. to view the full 4 pages of the document.
PSYC211 Lecture 10 - Feb. 13
Somatotopic Organization: The Motor Homunculus
1
PSYC 211
The Control of Movement
Dr. Yogita Chudasama
Stewart Biology, Room N8/4
Somatotopic Organisation:
The Motor Homunculus
Central sulcus
Stimulation of the Motor Cortex:
2
Stimulation of the Motor Cortex (Graziano and Aflalo 2007)
Prolonged stimulation
produces complex
movements
Organisation of the Motor Cortex
!The primary motor cortex (M1) is the
major input of cortical sensorimotor
signals and the major output of
sensorimotor signals is to the
descending motor pathways that
initiate movement.
!The supplementary motor area
(SMA) is located on the medial
surface of the brain.
!The premotor cortex is located
primarily on the lateral surface.
!The SMA and premotor cortex receive sensory information from the parietal
and temporal lobes.
!M1 also receives information from the somatosensory cortex
Prolonged stimulation produces complex movement
Tight relationship between neurons in the primary motor cortex and the motor neurons of the spinal
cord that enable motor functioning (an example)
Organization of the Motor Cortex:
The primary motor cortex (M1) is the major input of cortical
sensorimotor signals and the major output of sensorimotor
signals is to the descending motor pathways that initiate
movement
The supplementary motor area (SMA) is located on the
medial surface of the brain
The premotor cortex is located primarily on the lateral surface
The SMA and premotor cortex receive sensory information from
the parietal and temporal lobes
M1 also receives information from the somatosensory cortex
2
Stimulation of the Motor Cortex (Graziano and Aflalo 2007)
Prolonged stimulation
produces complex
movements
Organisation of the Motor Cortex
!The primary motor cortex (M1) is the
major input of cortical sensorimotor
signals and the major output of
sensorimotor signals is to the
descending motor pathways that
initiate movement.
!The supplementary motor area
(SMA) is located on the medial
surface of the brain.
!The premotor cortex is located
primarily on the lateral surface.
!The SMA and premotor cortex receive sensory information from the parietal
and temporal lobes.
!M1 also receives information from the somatosensory cortex
You're Reading a Preview

Unlock to view full version