Visual Knowledge

Visual Imagery

Mind's Eye

Use mental pictures

Introspection

Pictures in head

Varying levels of detail

Translation step causes confound

Chonometric studies

Speed of image judgements

Can think in paragraphs or images

Image scanning - move through image at constant rate

Scanning in size change, rotation

Demand Character do not add confound

Perception/Imagery interaction

Visualizing/perceiving draw on same mechanisms

In the Brain

Visual areas used

Motion areas for imagined motion

Detail increases use

Disruption studies

TMS disrupts imaging

Neglect syndrome ignores half of imagination

Spatial images vs visual

Blind have same scanning times as sighted

Spatial moves objects, visual sees details

Visual imagery uses visual regions

Spatial use different regions

Differences

Details visual

Navigation spatial

Visual imagery skill varies

Can visualize vividly or poorly

Eidetic imagery

"Photographic memory"

Rare, often confused for mnemonics

Images not pictures

Percepts - mental rep of stimuli percieved

Visual images more like percepts

Images not neutral, instead set

Long term visual memory

Images stored as files

Spatial knowledge uses symbolic/propositional code

Images improve memory

Image mnemonics

Interacting concepts in image improve memory

Dual Coding

Image memory similar to long term

Also influenced by "should be" schema

Boundary Extension

Image memory different system in short term, but very linked to long term