Transcript Lecture slides from 2007

Descartes
Charles Sherrington at 50
Sherington’s Physiology, c1900-1945
A pool of motor neurons
In the spinal cord
Serves each muscle
These pools form a
Topographic map
(sort of)
Sherrington’s Conceptual masterpiece
The Stretch Reflex
The sensory element:
The Stretch Reflex Circuit
Another View of the
Stretch Reflex
Note that some other system
Has to set the initial position
Of the limb
The Crossed Extension
Reflex
•Involves excitation and
Inhibition
•Activates muscles on
both sides of body