lecture 6: perception Flashcards
key processes of perception
- sense,
- organise,
- identify/recognise,
- prepare to respond
organisation perception process
organising a continuous array of sensory info into meaningful units and locating them in space
- form perception
- distance/depth perception
- motion perception
- perceptual constancy
identification perception process
attach meaning to what you perceive. compare incoming info to memory
- context
- expectations
- experiences
- knowledge
top down perception process
individual perception is affected by higher order processes such as knowledge, memory language
- mental processes
- identification/recognition
bottom up perception process
data driven processing
transform environmental stimulation and transforming into sensory fragments of angles and lines then organising that so you can recognise it.
- stimulus
- sensation
- perceptual organisation
- identification
role of monocular cues on perception
- interposition (one thing blocking another)
- linear perspective (converging lines)
- texture gradient
- light and shadow
- height in plane
- relative size (two objects of the ame size but one appears smaller)
role of binocular cues on perception
each eye gets a slightly different view of the world
- binocular disparity (greater distance between pictues = the further one object is away from another)
- binocular convergence (eyes mover inwards when looking at close things and out when looking far)
role of attention in perception
- the less you attend to stimulus, the less likely you will perveive it
- goal driven or stimulus
- motivation (selective attention by focusing on one sensory channel like hunger in favour of others)
influences on symptom perception
- attention
- context
- knowledge/beliefs
- motivation
form perception
organising sensory information into meaningful shapes and patterns. Divides into the figure and the (back)ground
- a pecerptual set is forms when our expectations of the context influence our perception
distance/ depth perception
monocular or binocular
motion perception
infer movement by
- things move across field of vision
- muscles tell you when you track and object by moving eyes
perceptual constancy
maintaining unchanged perception of object despite changes to retinal image
- size constancy
- shape constancy
- colour constancy: perceiving whitemess, greyness, blackness across changing illumination
gestalt view
we tend to organise visual elements into groups or unified wholes
- law of proximity
- law of similarity
- law of continuity (see lines as continuous even if they aren’t)
- law of closure (fill in gaps, not just lines)
- law of symmetry
- form and ground
inattentional blindness
you don’t perveive a prominent object because attention is on another task
