voluntary motion Flashcards
what five cortical areas are associated with production of voluntary motion
- primary motor cortex
- supplementary motor cortex
- premotor cortex
- parietal cortex
- pre-frontal cortex
what pathway allows you to reach for and grasp objects (complete motor act based on visual input)
dorsal visual pathway
where do axons in the dorsal visual pathway project
occipital cortex => parietal/frontal cortex
to what areas of the parietal cortex does the visual cortex relay information
V6a
PEc
MIP
VIP
which area of the parietal cortex creates a rough map of your surroundings
VIP
where does the VIP send information about surroundings and what happens there
F4 (in premotor cortex) - a more detailed map is created
in what fashion are neurons in F4 excited in relation to object of interest
closer object => increased firing
what part of the brain receives visual information regarding spatial orientation of the extremities
superior parietal cortex
what does F2 do to assist in reaching for an object
receives input from superior parietal cortex and creates a map of surroundings in relation to your body
from what areas does F5 receive input
anterior intraparietal area and PFG
what information is carried by the firing of neurons in F5
the goal of a given action
which part of the cortex codes motions required to meet a goal
primary motor cortex
which part of the cortex identifies a specific motor sequence required to meet a goal and changes motion as necessary
supplementary motor cortex
which part of the cortex is responsible for postural control when executing a motion
supplementary motor cortex
which part of the cortex determines whether a given movement is appropriate and identifies a goal/the motion required to reach it
premotor cortex
what is the function of the central part of the spinocerebellum (aka the vermis)
postural control
what is the function of the paravermis (lateral part of the spinocerebellum
ballistic movement
control of ongoing movement
what is the function of the cerebrocerebellum
plan complex motions, learning
what are the outputs of the central region of the spinocerebellum
fastigial, globose and eboliform nuclei => rubrospinal tract
what part of the cerebellum is responsible for preparing for future balance and eye movements
vestibulocerebellum
what are the inputs to the central region to the spinocerebellum to execute postural adustments
vestibular, visual and auditory input efferent copy (expected motion)
what are the inputs to the lateral (paravermal) region of the spinocerebellum
efferent copy muscle afferent (what ms. are doing)
what are the outputs of the lateral (paravermal) region of the spinocerebellum
eboliform and globose nuclei => rubrospinal tract
what are the inputs of the cerebrocerebellum
cortex areas involved in voluntary motion
what are the outputs of the cerebrocerebellum
dentate nuclei => cortex
what layer of the primary motor cortex receives sensory input from muscles/joints
layer 4
what layer of the primary motor cortex is the output for the corticospinal tract
layer 5
which pathway is excited by dopamine from the SNc
direct
what NTs excite the indirect pathway
EAA and ACh
