Lecture 2- Perceiving faces Flashcards
(20 cards)
What is Pareidolia?
the brain is predisposed to seeing faces everywhere
What did Yin (1969) find?
Participants’ memory declined when images of faces, houses, planes, and stick figures were inverted.
What is thatcher illusion?
It is difficult to recognise a face as the features on it are upside down while the face is still upright.
What is the composite effect? Young et al (1987)
- Can people process parts of faces independently or the whole face?
- this is tested by splitting faces into halves
what is prosopagnosia?
face blindness
due to brain damage
What did Riddoch et al. (2008) find?
- patient FB
- unable to name famous faces, and unable to match faces across different views of the same face
What did we find about CK? Moscovitch et al (1997)
- ## able to recognise that they were faces but did not seem to know that faces were made of objects
where does facial perception occur in the brain?
- fusiform Face area (FFA) visual expertise
- Para hippocampal place area (PPA)
What two pathways did Bruce and young (1986) find in the functional model?
Identity and Expression
what is Bruce & Young (1986) expression pathway?
- leads to understanding a person’s expression
- We retrieve visually semantic information, e.g., their gender, age, and emotional state.
What did Haxby et al (2000) find?
2 major pathways
- one from the visual cortex via FFA identity
- visual cortex via superior temporal lobe - expression (occipital face area)
Name the stages face identification. (Bruce & Young)
1) Face recognition
2) Person identification
3) Name generation
What is the face recognition stage?
- stored representation of a face identity
what is the person identification node stage?
- there is a structure that codes semantic information about people
- occupation, preferences, and relationships
what are priming studies?
they examine the effect of previous exposures of certain stimuli on performance
Name Examples of priming studies
- Repetition priming (Bruce & Valentine)
- semantic priming of face identification (young et al)
What does Gauthier & Tar state about faces being special?
- Faces are not special because they are faces
- Faces are special because we have the most expertise with them
- We are expert at individuating specific faces
Describe patient WJ.
McNeil and Warrington (1993)
- A prosopagnosic sheep farmer
- couldn’t recognise faces but could recognise sheep
What is Capgras delusion?
- neuropsychological condition
- patients claim that people they know have been replaced by duplicates
state one issue with the Bruce and Young functional model?
need an extra pathway, an emotional pathway
