Wk5 Action Observation Flashcards

1
Q

what famous thing did William james say about action observation in 1890?

A

’ .. every mental representation of a movement awakens to some degree the actual movement which it is object’

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2
Q

def ideomotor priming

A

motor system activation through observing actions

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3
Q

describe a task used to demonstrate ideomotor priming with response time measures?

A

an image of a hand showed was used to signal pressing a button with the index finger, the signal could be at once either congruent/incongruent and spatial(‘x’) or finger.

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4
Q

in an ideomotor priming reponse time task, describe the congruence and cue type (spatial or finger) if the cue to press a key with your index finger came from seeing a picture with a lifted index finger and an ‘x’ on the middle finger?

A

incongruent spatial cue

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5
Q

in an ideomotor priming reponse time task, describe the congruence and cue type (spatial or finger) if the cue to press a key with your index finger came from seeing a picture with a lifted index finger and no x marks?

A

congruent finger cue

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6
Q

in an ideomotor priming reponse time task, describe the congruence and cue type (spatial or finger) if the cue to press a key with your index finger came from seeing a picture with an x mark on the middle finger and no index fingers raised?

A

incongruent spatial cue

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7
Q

how was movement congruence manipulated by van Leeuwen et al.?

A

the target movement was to press a key with the index finger. the cue could be either the same finger or a different finger

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8
Q

what are the results of van Leeuwen et al. using a response time measure to assess ideomotor priming with finger stimuli? 2

A

responses incongruent to the cue were slower than congruent responses

response to spatial (symbol) cue slower than finger/biological cue

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9
Q

what did Kilner et al. find about movement error with regard to (cartoons of) humans and robots? how?

A

viewing two humans make opposing (incongruent) movement cues interfered with Px movement, but not when the opposing movement was from a robot source.
movement tracking in response to robot/human cues.

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10
Q

what could be an effect of observing a biological, compared to robot, model displaying a movement which is opposite to the one you have to make?

A

taking in an opposing movement will produce more errors in your movement than if it was a robot.

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11
Q

what are mu waves?

A

8-13hz synchronised eeg oscillations over the motor cortex

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12
Q

when are mu rhythms seen?

A

when the Px is at rest

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13
Q

how do mu rhythms indicate an action? and what types of actions?

A

resting mu is suppressed

when an action is either performed, imagined, or observed

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14
Q

what evidence shows that mu rhythm desynchronisation is sensitive to different forms of observed behaviour?

A

mu amplitude decreases further as you observe movements going from a flat hand, to mimicking a movement, to enacting that movement on an object.

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15
Q

looking at what type of stimuli shows we can decode rich information from biological movement?

A

point light displays

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16
Q

what are some types of info that can be decoded from biological movement? 4

A

gender, weight, affective state (relaxation and happiness)

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17
Q

what brain areas appear to specialised in decoding biological motion? 2

A

lateral and inferior temporal cortex

inferior frontal cortex

18
Q

motion selective sites are distinct from __ 2

A

body form sites (motionless body parts)

face sites

19
Q

what is a body and motion selective activation area?

A

posterior inferior temporal sulcus

20
Q

what is a body and face selective activation area?

A

posterior fusiform gyrus

21
Q

what are three sub areas that resonate to biological agents and their associated domains?

A

biological motion: posterior superior temporal sulcus
extrastriate body area: inferior temporal sulcus (EBA)
fusiform body area: lateral fusiform gyrus (FBA)

22
Q

which area appears to be most selective to biological motion?

A

posterior superior temporal sulcus

23
Q

what other non-biological factors affect action observation? 3

A

role of experience
visual features/shape
meaning of action

24
Q

how did Press et al. 2005 show that robotic movements can elicit automatic imitation? what does this mean?

A

when Px came back on day 2, there was more interference from incongruent robot hands than was found on day 2.
with experience, non-human stimulus can be interpreted as meaningful in the same way human/bio stimuli are.

25
Q

explain task and DV of reach paradigms for testing influence of biological movement. what does the DV represent?

A

the Px always attempts to reach in a straight line while a curved reach is modelled to them by another person. DV is the deviation from vertical, representing the interference from modelled, incongruent action.

26
Q

findings of Sparks et al. 2016 find about motor contagion? conclusion?

A

direct reaches were influenced by a modelled curved reach, regardless of whether the person follow the curve cue (ball) or performed a straight reach superimposed on a curve cue.
the mere presence of a human is enough to suggest agency and interfere with the observers movement.

27
Q

what did bayliss et al find about affective signals in the endogenous spatial cueing paradigm? 2

A

happy faces sped RTs for both congruent and incongruent cues, compared to disgust faces.
after trials, targets cued with a happy face were liked more than targets (e.g. mugs) cued with disgust faces)

28
Q

what did original mirror neurone work by rizzolatti examine?

A

populations of neurones that resopnd to different grasp shapes, in macaques.

29
Q

which brain area was first suspected to be the site for mirror neurones?

A

macaque analogs suggested brocas area (44) - syntactical processing

30
Q

what 4 things did Rizzolatti et al. believe mirror neurones responded to?

A

sight of goal-directed actions
the goal being achieved, even out of sight
sound of an action (multimodal)
action is performed by an agent

31
Q

what showed task dependency in motor neurone studies with macaques? what did this show?

A

when the task involved eating food there was greater activation of suspected mirror neurones than for putting the food in a cup
eating is more ecologically relevant

32
Q

a monkey seeing food picked up with a pair of pliers would __

A

not show increased neuronal firing rate, compared to themselves picking up the food or seeing another hand pick it up

33
Q

in a mirror neurone study, what factor influences whether mirror neurones fire when viewing an action where the end is hidden from sight?

A

whether the monkey knows that the goal is present or absent

34
Q

what evidence suggests there are subpopulations of mirror neurones, specific to tasks? what brain area was examined?

A

in macaques, there is preferential spiking for grasping to eat vs grasping to place item in a cup on their shoulder.
parietal lobe

35
Q

is there a neuronal basis for peri- / extra-personal space? What evidence?

A

yes, a monkey viewing a human grasp an object will show doubly dissociated neurones that are sensitive exclusively to either within or without the monkey’s grasp.

36
Q

what two systems (and 3 areas) are important for a developmental perspective of mirror neurones?

A

visual and execution responses (F5c, PFG)

purely visual responses - no execution (STS)

37
Q

what changes are thought to happen in the development of the mirror neuron system?
what enacts this change?

A

two different systems for representing actions are wired together to become cohesive
repeated synchronous coactivations of motor and visual representations

38
Q

what are the stages of developing a mirror neuron system? 3 what happens at each?

A

observation:
- unaware of what other’s actions will do

mimicking -coupling:
- recognising doing the action

generalisation:
- coherence between your actions and viewing other’s action

39
Q

what type of muscles would you place EMG onto to test whether intentional action to eat food is different from intentional action to place it on the shoulder? where are these?

A

mylohyoid

under the mouth

40
Q

what activity is found for people who reach for a piece of food but know they will place it on their shoulder instead of eat it? what does this suggest?

A

reduced EMG of mouth muscles

changes in activation can differentiate different intentions of one’s actions

41
Q

what was found about the actions of children with autism in a reaching study?
what does this suggest about autism?

A

compared with controls, they don’t display anticipatory muscle activation that differentiates the intention of their action.
so they may have difficulty discerning the intentions of others due to lacking insight into their own action intentions.