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Nsci > 22-Motor3 > Flashcards

22-Motor3 Flashcards

1
Q

Parietal cortex links ___ cortex to ___ cortical areas

A

visual, motor

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2
Q

Area 5 of parietal lobe is involved in ___

A

proprioception, somatosensory, reach

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3
Q

Area 7a of parietal lobe is involved in ___

A

visual oculomotor

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4
Q

Area 7b of parietal lobe is involved in ___

A

somatosensory

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5
Q

Parietal neurons encode [spatial/temporal] features of visual stimuli

A

spatial

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6
Q

Parietal lesions produce (x3)

A
  • reaching deficits
  • saccade deficits
  • attention deficits
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7
Q

LIP

A

lateral interparietal, part of saccade network

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8
Q

Saccade network: parietal areas (x1)

A

LIP

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9
Q

Saccade network: outputs (x2)

A
  • superior colliculus
  • frontal eye fields (FEF)
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10
Q

Reach network: parietal areas (x3)

A
  • MIP (parietal reach region)
  • V6A
  • Pec
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11
Q

Reach network: outputs (x1)

A

(dorsal) premotor cortex

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12
Q

Grasp network: parietal areas (x2)

A
  • AIP
  • PF (7b)
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13
Q

Grasp network: outputs (x1)

A

(ventral) premotor cortex

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14
Q

Oculomotor apraxia

A

visually guided saccade deficits (fewer, slower saccades)

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15
Q

Simultanagnosia

A

inability to percieve more than one object at a time

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16
Q

Optic ataxia

A

visually guided reach deficits (i.e. misreaching)

17
Q

In optic ataxia, errors are worse if (x2)

A
  • targets are in contralesional visual space
  • contralesional hand is used
18
Q

Properties of visual parietal neurons (x3)

A
  • retinocentric receptive fields
  • receptive fields are large and peripheral
  • driven by simple stimuli
19
Q
A

true

20
Q
A

true

21
Q
A

false (true for MST, not VIP)

22
Q
A

false (true for VIP, not MST)

23
Q
A

debated

24
Q

LIP involved in [reach/saccade] control

A

saccade

25
Q

PRR involved in [reach/saccade] control

A

reach

26
Q
A

true

Nsci (18 decks)

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