voluntary motion Flashcards

1
Q

what five cortical areas are associated with production of voluntary motion

A
  • primary motor cortex
  • supplementary motor cortex
  • premotor cortex
  • parietal cortex
  • pre-frontal cortex
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2
Q

what pathway allows you to reach for and grasp objects (complete motor act based on visual input)

A

dorsal visual pathway

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3
Q

where do axons in the dorsal visual pathway project

A

occipital cortex => parietal/frontal cortex

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4
Q

to what areas of the parietal cortex does the visual cortex relay information

A

V6a
PEc
MIP
VIP

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5
Q

which area of the parietal cortex creates a rough map of your surroundings

A

VIP

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6
Q

where does the VIP send information about surroundings and what happens there

A

F4 (in premotor cortex) - a more detailed map is created

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7
Q

in what fashion are neurons in F4 excited in relation to object of interest

A

closer object => increased firing

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8
Q

what part of the brain receives visual information regarding spatial orientation of the extremities

A

superior parietal cortex

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9
Q

what does F2 do to assist in reaching for an object

A

receives input from superior parietal cortex and creates a map of surroundings in relation to your body

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10
Q

from what areas does F5 receive input

A

anterior intraparietal area and PFG

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11
Q

what information is carried by the firing of neurons in F5

A

the goal of a given action

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12
Q

which part of the cortex codes motions required to meet a goal

A

primary motor cortex

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13
Q

which part of the cortex identifies a specific motor sequence required to meet a goal and changes motion as necessary

A

supplementary motor cortex

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14
Q

which part of the cortex is responsible for postural control when executing a motion

A

supplementary motor cortex

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15
Q

which part of the cortex determines whether a given movement is appropriate and identifies a goal/the motion required to reach it

A

premotor cortex

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16
Q

what is the function of the central part of the spinocerebellum (aka the vermis)

A

postural control

17
Q

what is the function of the paravermis (lateral part of the spinocerebellum

A

ballistic movement

control of ongoing movement

18
Q

what is the function of the cerebrocerebellum

A

plan complex motions, learning

19
Q

what are the outputs of the central region of the spinocerebellum

A

fastigial, globose and eboliform nuclei => rubrospinal tract

20
Q

what part of the cerebellum is responsible for preparing for future balance and eye movements

A

vestibulocerebellum

21
Q

what are the inputs to the central region to the spinocerebellum to execute postural adustments

A
vestibular, visual and auditory input
efferent copy (expected motion)
22
Q

what are the inputs to the lateral (paravermal) region of the spinocerebellum

A
efferent copy
muscle afferent (what ms. are doing)
23
Q

what are the outputs of the lateral (paravermal) region of the spinocerebellum

A

eboliform and globose nuclei => rubrospinal tract

24
Q

what are the inputs of the cerebrocerebellum

A

cortex areas involved in voluntary motion

25
Q

what are the outputs of the cerebrocerebellum

A

dentate nuclei => cortex

26
Q

what layer of the primary motor cortex receives sensory input from muscles/joints

A

layer 4

27
Q

what layer of the primary motor cortex is the output for the corticospinal tract

A

layer 5

28
Q

which pathway is excited by dopamine from the SNc

A

direct

29
Q

what NTs excite the indirect pathway

A

EAA and ACh