psych chapter 10

define visual illusion

an illusion created by a misinterpretation (distortion or mistake) of the reality of a visual stimulus

define perceptual constancy

the minds ability percieve a visual stimulus as remaining constant even though the visual infromation sent to the brain about the object shows changes in shape, size, brightness and oreinetaion

define bistable perception

the ability to spontanoeuly switch between different interpretations of the same ambigous visual stimulus

define agnosia or visual agnosia

a brain disorder that interferes with ones ability to recognise or identify objects, people, sounds using one or more of the senses, despite the effected sensory system operating full functionally

define apperceptive visual agnosia

an inability to recognise familiar visual stimuli due to problems with processing perception

define assosiative visual agnosia

an inability to recognise familar visual stimuli despite having no problems with processing perceptions

define perceptual distortion

when an individuals perceptual interpretation of a stimulus varies from how it is commonly percieved

define spatial neglect

a condition involving an inability to attend to sesnory stimuli on one sie of the body