Chapter 10 - Visual Imagery Flashcards
what is mental imagery?
-> experiencing a sensory impression in the absence of sensory input
what is visual imagery?
-> “seeing “ in the absence of visual stimuli
what are the three beliefs about whether thought can occur without images?
aristotle = no
behaviourists = yes, imagery is mythical and unproven
cognitive revolutionist = imagery isn’t necessary, but it does facilitate processing
what are concrete vs abstract nouns?
-> concrete: can visualize
-> abstract: can’t visualize
what nouns facilitate memory?
concrete nouns
what is the conceptual peg hypothesis?
-> concrete nouns create images that other words can hang on to
what is the dual coding hypothesis?
-> the idea that we have two coding systems (verbal / imagery), and they are linked
______ are easier to remember in a sequence, but _______ are easier to remember overall
words, images
what was Kosslyn’s view on visual imagery?
-> visual imagery is spatial (longer to scan over distances = increased reaction time)
what was Pylyshyn’s view on visual imagery?
-> started the imagery debate, said that visual imagery was based on language / verbal items
propositional:
-> the underlying relationship between concepts
what is tacit knowledge?
-> things we know without remembering that we do
what is aphantasia?
-> the inability to form imagery (not a disorder)
what happened in Perky’s experiment?
-> people were mistaking a faint image for mental images
what part of the brain was activated for BOTH imagery and perception?
-> the frontal lobe
what part of the brain is only for perception and not imagery?
-> the occipital lobe
what happened to patient MGS who had their occipital lobe removed?
-> they had a reduced visual field
what are the implications of hemi-neglect on visual imagery?
-> people with hemi-neglect also neglect that side in terms of imagery
what was the case of patient RM?
-> perception intact, imagery impaired (damage to parietal and occipital)
