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Flashcards in 22-Motor3 Deck (26)
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1

Parietal cortex links ___ cortex to ___ cortical areas

visual, motor

2

Area 5 of parietal lobe is involved in ___

proprioception, somatosensory, reach

3

Area 7a of parietal lobe is involved in ___

visual oculomotor

4

Area 7b of parietal lobe is involved in ___

somatosensory

5

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

spatial

6

Parietal lesions produce (x3)

- reaching deficits
- saccade deficits
- attention deficits

7

LIP

lateral interparietal, part of saccade network

8

Saccade network: parietal areas (x1)

LIP

9

Saccade network: outputs (x2)

- superior colliculus
- frontal eye fields (FEF)

10

Reach network: parietal areas (x3)

- MIP (parietal reach region)
- V6A
- Pec

11

Reach network: outputs (x1)

(dorsal) premotor cortex

12

Grasp network: parietal areas (x2)

- AIP
- PF (7b)

13

Grasp network: outputs (x1)

(ventral) premotor cortex

14

Oculomotor apraxia

visually guided saccade deficits (fewer, slower saccades)

15

Simultanagnosia

inability to percieve more than one object at a time

16

Optic ataxia

visually guided reach deficits (i.e. misreaching)

17

In optic ataxia, errors are worse if (x2)

- targets are in contralesional visual space
- contralesional hand is used

18

Properties of visual parietal neurons (x3)

- retinocentric receptive fields
- receptive fields are large and peripheral
- driven by simple stimuli

19

[True/false]: Parietal neurons in MST respond to both optic flow and self motion

true

20

[True/false]: Parietal neurons in VIP respond to both visual stimuli and cutaneous stimulation

true

21

[True/false]: Parietal neurons in VIP respond to both optic flow and self motion

false (true for MST, not VIP)

22

[True/false]: Parietal neurons in MST respond to both visual stimuli and cutaneous stimulation

false (true for VIP, not MST)

23

[True/false]: Parietal neurons have some motor function

debated

24

LIP involved in [reach/saccade] control

saccade

25

PRR involved in [reach/saccade] control

reach

26

[True/false]: PRR codes reach trajectories in eye-centered coordinates

true