Please enable JavaScript.
Coggle requires JavaScript to display documents.
MOTOR FUNCTION (MOTOR CONTROL (Components for motor control: normal…
MOTOR FUNCTION
MOTOR CONTROL
Components for motor control: normal postural tone and muscle tone, postural mechanisms, selective movements and coordination
Sensory and motor systems are interdependent. Movement guided by:
Input from sensory system: close-loop or reflex controlled
OR
Triggered by a sensory cue or internal desire to move: open-loop or volitional movement
Ability to make dynamic postural adjustments and to direct body and limb movements with intention and in purposeful activity.
Highest areas of motor control: prefrontal cortex, supplementary motor area, premotor cortex and basal ganglia. Concerned with initiation, planning and programming of movements. Desire originates in limbic system and parietal cortex – which is then translated into movement by the basal ganglia and their cortical projections.
BASAL GANGLIA
Complex movement disorders e.g. Parkinson’s disease, Huntington’s disease, choreoathetoid cerebral palsy and many others
Abnormal involuntary movements such as chorea, dystonia, akinesia, bradykinesia, rigidity
-
CEREBRUM
Achieved by comparing intended movement from motor areas in cortex with actual movement as detected by activation of muscle afferents and interneurons in spinal cord.
-
Responsible for the coordination of movement, stores motor information
DAMAGE
-
-
-
Dysarthria - slurred speech due to oral muscular incoordination
Nystagmus - rapid jerky eye movements
-