8. Perception of Action I Flashcards
What is Perception-Action Mapping and how does it enable imitation?
ability to map visual representations of an action onto our motor systems - CROSS MODAL TRANSFER
An infant can imitate expressions, mouth and hand movement etc. What innate human ability is this an example of?
Perception-Action Mapping (PAM)
Babies can recognise equivalences between body movements they see and those made by their own body. Adults copying their expressions can also provide them with visual input matching their motor ouput.
This is an example of:
Active intermodal matching (AIM)
Active Intermodal Matching suggests that perception, action and imitation have __ coding and representations (the same, independent)
Independent
Ideomotor theory suggests that perception and action have __ coding (shared, independent)
Shared
AIM theory suggests that:
perception and action are coded for independently, and neonates can imitate action
Meaningful actions are performed via which route of the dual route model of imitation?
The Semantic route
In the Dual Route model, the input action undergoes visual analysis, LTM and ST/WM in the semantic route. What does the direct route follow?
visual analysis, bypasses LTM to ST/WM and then to output
Mirror neurons are involved in which route of the dual route model of imitation?
The Direct route
What does bimodal mean in terms of mirror neurons?
They respond to visual and motor stimuli
Evidence for mirror neurons (behavioural): faster responses when there is compatibility between __ and __ movement
observed, performed
These neurons decrease firing when seeing another perform an action and may enable us to tell our own actions from others
Antimirror neurons
True or false: in humans, mirror neurons will fire regardless if the action has a goal. But in monkeys, mirror neurons are not activated for ‘meaningless action’
True
True or false, humans require there to be an object acted upon to evoke mirror neurons
False
What are the 3 different types of indirect evidence for mirror neurons in humans?
behavioural, imaging data, TMS
Behavioural evidence for mirror neurons in humans?
faster responses when observed and performed action are compatible: automatic imitation
Imaging evidence for mirror neurons?
seeing the action of hand/faces activated relevant premotor/parietal cortex regions
TMS and MEP evidence for mirror neurons?
observing a hand action, which giving TMS to same region, produces excitability in the hand muscles
Direct evidence for human mirror neurons
- epilepsy patients
- observed and executed hand actions and facial expressions
- mirror neurons found in SMA and MTL (hippocampus)
What did buccino et al 2007 find: mirror neurons across species
mirror neurons activated when behaviour is in the human motor repertoire eg lip smacking, but not barking
Human mirror neuron brain regions =
Area 44 (Broca) - speech and motor representation of hand and mouth BA 6 (inferior frontal gyrus) - arm and head movement
Monkey mirror neuron regions =
F5 in ventra/lateral premotor cortex
What type of behaviour do most monkey mirror neurons respond to?
Eating related behaviour (80%), communicative (20%)
true or false: monkeys dont imitate, they use mirror neurons to infer an action goal
True