recognising facial attributes Flashcards
what is prosopagnosia?
face agnosia, failure to recognise faces
how can prosopagnosia be interpreted?
faces processed by a specialised brain system, within class object discrimination defective (i.e. patients may not recognise different objects)
what is the faces and sheep example?
recognises individual sheep but not human faces
what is double dissociation?
seperate impairments in recognition of faces and objects
what is the extrastriate body area?
right occipital lobe, has a strong response to bpdy stimuli, no response to faces
what are the 3 heirarchical models of processing?
hubel and wiesels findings, slefridges pandemonium and hypothetical grandmother cells
what are hubel and weisels findings?
simple to cortex to hypercomplex; elaborate cells in temporal cortex
what is selfridges pandemonium?
more complex as levels increase, demons in levels, models of levels lead to decision processng
what is hypothetical grandmother cells?
specificty; repsond to one object only
generalisation; respond to many instances
why is Marrs model wrong?
3D processing is brain is wrong, specific processing for each angle / part of each object , 1 view
explain sensitivity to face view?
back of head= little response and front of face = large response
what are the 3 features for visual cues for face recognition?
internal, external and configuration
what features are essential to face familiarity?
external features more important for unfamiliar faces, internal features more important for famous faces
what is perceptual bias?
judgements of face identity, sex, age, attractiveness are biased to left side of face
