Lecture 6 - Perception Flashcards
Perception:
more than sensory discrimination
organisation and interpretation
active process – using memory, thought, etc
Visual perception
adaptation effects after looking at bright light
negative after-image
bottom-up processes
sensory driven
processes that organise incoming information
top-down processes
driven by knowledge, experience, and expectations
determine perception in ambiguous settings
depth perception:
binocular disparity
view of world produced by 2 intact eyes that brain integrate to form a 3 dimensional image
monocular cues
– reflect learning (interposition, relative size and texture gradient)
gestalt or whole perception
organisational tendencies of system
seeking meaningful groupings
e.g. proximity, similarity, continuity, closure
perceptual organistion
perceptual constancies: object doesn’t change even if sensory info about it changes
perceptual illusions
linear perspective
vanishing point between 2 lines
sensory limitations to perception
limit amount of info available to us as we filter out information
Huxley - Doors of perception
function of brain and nervous system is to protect us being overwhelmed from large amounts of useless knowledge, filtering out anything unnecessary and keeping what is practically useful
The assumptive world
internalised cognitive model
blind from birth, vision as an adult
Rosenhan (1973):
On being sane in insane places 8 pseudopatients single symptom – hearing voices diagnosis of schizophrenia hospitalised 7-52 days (mean=19) discharged – schizophrenia in remission result: cannot differentiate between sane and insane in psychiatric hospitals
