task 1 - cortical control of voluntary movement

Question 1

what pathway

Answer 1

observation of environment: object identification and localization, LIP
task: application of task rules to select the goal, PFC
object selection: select target of interest
attention

Question 2

intraparietal cortex

Answer 2

identifying motor goals
endogenous action; represents relevant stimuli

Question 3

IPS

Answer 3

dorsal attention system
represents possible action relevant stimuli
grasp deficit in optic ataxia

Question 4

LIP

Answer 4

salience mao for spatial attention
uses attention to select object of interest

Question 5

(pre-)SMA

Answer 5

balances exogenous/endogenous action through automatic inhibition of irrelevant affordance-driven action
(inhibition of involuntary movement)

Question 6

MCC/CMA

Answer 6

self-generated action
together with pre-SMA
action not confined to endogenous movement

Question 7

PMd and M1

Answer 7

selecting action
movement specification
motor planning

Question 8

POJ (Parieto-Occipital Junction)

Answer 8

reaching deficit in optic ataxia

Question 9

IPL (inferior parietal lobe)

Answer 9

part of ventro-dorsal stream
“cognitive aspects of action representation requiring knowledge of skilled object use
making correct inferences about an object’s function based on its structure

Question 10

SEF (supplementary eye field)

Answer 10

automatic inhibition of unwanted saccadic movements

Question 11

ventral pathway

Answer 11

what pathway
identifying motor goals

Question 12

dorsal pathway

Answer 12

how pathway
selecting actions, motor planning

Question 13

dorsal-dorsal

Answer 13

structure-based action
reaching and grasping

Question 14

ventral-dorsal

Answer 14

function-based pathway
use system

Question 15

alien-hand syndrome

Answer 15

pre-SMA lesion
you cannot control your movements

Question 16

feedback-control policies

Answer 16

action selection and movement specification
= how processing
GPS example: when you take the wrong turn, it recalculates a new alternative route

Question 17

how pathway

Answer 17

action selection: how the end effector achieves the goal ((pre-)SMA)
movement specification: complete specification of the motor command (M1)
abstract kinematics: what the movement will look like