Page 342 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003

F. Tracts and function of cerebellum
Afferents Efferents
“Associative cortex” Sensorimotor cortex
Cerebellum
Neo-
cerebellum
Oculomotor
Pons control
Pyra- Pons Thalamus
midal
tract Spinal
cord
Paleo-
cerebellum
Archeo- (After Jansen & Brodal)
cerebellum Brain
Spinal stem Motor System III
cord
Vestibular Dentate nucleus
nuclei Emboliform nucleus
Fastigial nucleus
Intracerebellar nuclei Red nucleus
Labyrinth Reticular formation
Vestibular nuclei Plate 12.10
1 2 3

Optimization and correction Coordination of postural and goal- Programming of (After R.F. Schmidt)
of postural and oculomotor directed movement, correction of goal-directed movement
function (tonus, posture, balance) course of goal-directed movement

ity because the extensor effect of Deiter’s nucleus bral cortex initiates the movement of returning the
predominates. ball while taking the ball, net, other side of the court,
The integrating and coordinating function of and position of the opponent into consideration.
the sensorimotor system can be illustrated in two Positional adjustments may be necessary when re-
tennis players. When one player serves, the body of turning the ball. Using the movement concept pro-
the other player moves to meet the ball (goal-directed grammed in the cerebellum and basal ganglia, the
movement) while using the right leg for support and motor cortex subsequently executes the directed
the left arm for balance (postural motor control). The movement of returning the ball. In doing so, the
player keeps his eye on the ball (oculomotor control) player may “slice” the ball to give it an additional
and the visual area of the cortex assesses the tra- spinning motion (acquired rapid directed movement). 329
jectory and velocity of the ball. The associative cere-
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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