PHYS voluntary motion

Question 1

f(x) of the VIP

Answer 1

creates rough map of the space around you

Question 2

f(x) of F4

Answer 2

creates a detailed map of the space around you
neurons here particularly excited by proximity (closer the object, the more they fire)
VIP –> F4

Question 3

f(x) of F2

Answer 3

constructs a related map - but it is the location of your arm in relationship to your body and the things around you

Question 4

AIP/PFG involved in

Answer 4

seeing an object to grasp (visually dominant)
grasping an object (motor dominant)
both seeing and grasping an object (visuomotor neurons)

Question 5

f(x) of F5

Answer 5

neurons of F5 fire with the GOAL of the action, not the motor act itself

AIP/PFG –> F5

Question 6

2 divisions of supplementary motor cortex

F(x)

Answer 6

supplementary motor area (SMA): postural control
pre-supplementary area (pre-SMA): plans the motor
program required to make the action occur

Question 7

supplementary motor cortex f(x)

Answer 7

organize motor sequences
acquire motor skills
executive control (able to switch actions/strategies)
postural controls
identifies specific motor sequences required

Question 8

premotor cortex f(x)

Answer 8

determines if it is ok to move

identify the goal and the motion

Question 9

primary motor cortex f(x)

Answer 9

codes individual motions required to reach the goal

Question 10

cerebellum f(x)

Answer 10

sequence complex actions
correct force/direction
balance and eye movements
learning of complex actions

Question 11

Spinocerebellum
controls
inputs outputs

Answer 11

central
controls - postural control
inputs - efferent copy; vestibular, hearing, and
auditory input
outputs - interpositus and fastigial nuclei
either side of vermis
controls - force and direction
inputs - efferent copy and muscle afferent info
outputs - interpositus nucleus

Question 12

cerebrocerebellum
controls
inputs
outputs

Answer 12

controls - plan complex motions, learning
inputs - cerebral cortex related to motion
outputs - dentate nucleus

Question 13

vestibulocerebellum
controls
inputs
outputs

Answer 13

controls - balance/eye movements, future motions?
(planning)
inputs - vestibular
outputs - vestibular nucleus and others

Question 14

outputs from cerebellum

Answer 14

via deep cerebellar nuclei:
    dentate nucleus
    fastigial nucleus
    interpositus
      globose
      emboliformis

Question 15

direct pathway of basal ganglia

Answer 15

D1 receptors
excited by dopamine
allows motion

Question 16

indirect pathway of basal ganglia

Answer 16

D2 receptors
inhibited by dopamine
inhibits motion