final 4.0 Flashcards

(32 cards)

1
Q

what is SMA

A

complex sequences and bilateral movement

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2
Q

what are the premotor cortices

A

visual motor transformation for reaching and grasping

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3
Q

true or false

cortical maps are not static

A

true

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4
Q

what are rat motor cortex for

A

representing forelimb, whiskers, and extra ocular muscles

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5
Q

true or false

functional activity can not change maps in somatensensory and motor cortex

A

false, because it can change

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6
Q

how were direct connections btw cortical neurons and motor neurons confirmed

A

spike in triggered average

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7
Q

what do stimulation of motor cortices produce

A

short latency movements

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8
Q

magnetic stimulation of primary motor cortex activities corticospinal fibers and produces?

A

muscles contraction in one or a few muscles

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9
Q

what are the characteristics of premotor cortex

A
  • larger amplitude stimulation
  • longer delay
  • for grasp or hand to mouth behaviors in monkeys
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10
Q

where is the premotor cortices located

A

largely posterior parietal and prefrontal area

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11
Q

where does motor and premotor areas receive input from

A

thalamus that are represented by connections with cerebellum, basal ganglia, spinal cord

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12
Q

what did Evarts say motor cortex included

A
  • Evarts- looks like M1

- codes force not kinematics

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13
Q

what did georgopoulis say motor cortex included

A

population of cells code direction or kinematics

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14
Q

what did Kalaska say motor cortex include

A

population of neurons also code for posture and kinetics

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15
Q

what did Strich say motor cortex include

A

wrist movement with forearm in 3 positions pronation, supination, and mid
also 3 types of cells which include kinematics, dynamics, and both

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16
Q

true or false

motor cortex transformers a kinematic plan into dynamic- muscle like commands

17
Q

VA/VL complex of thalamus is devoted to what?

A

basal ganglia

18
Q

what does the Striatum include

A

receives input from cortex

-Caudate and Putamen

19
Q

what are the 2 internal loops

A
Substantia Nigra (pars compacta)
Subthalamus
20
Q

What are the Output Structures

A
  • Globus Pallidus
  • Substantia Nigra
    - to superior colliculus
    - for saccadic eye movement
21
Q

what does the basal ganglia include

A
  • No direct input/output with spinal cord

- Receives from all areas

22
Q

are the Cauduate and Putamen excitatory or inhibitory

23
Q

what is Parkinson Disease

A

degeneration of dopamine neurons

24
Q

how are hand kinematics coded

A

in population of neuorns

25
true or false | the activity in CNS correlates with direction and amplitude of joint torque (force), and with direction of movement
false, it does correlate with direction and amplitude of joint torque but NOT with direction of movement
26
true or false | neurons respond to direction and space and some respond to the muscle, also some respond to both
true
27
what do spinal circuits generate
muscle action
28
what are dorsal premotor area for
set related for reaching and are active prior to movement
29
what does ventral premotor cortex represent
shape of your hand to objects and how you interact with objects
30
where does VPm get info from
ventral visual stream which tells us about details of objects
31
where does DPm get info from
dorsal stream that tells us where objects are
32
what is DPm cortex related to
direction of planning to reach