Exam 3 Flashcards
(104 cards)
What are two kinds of structured representations?
Linguistic representations
Visual Imagery represenations
Epiphenomenon of visual imagery?
the feeling of looking
Epiphenomenon
a secondary effect or byproduct that arises from but does not causally influence a process. (accompanies mechanism, isn’t necessarily part of mechanism)
Four properties that a ‘2-part Visual Mental Imagery system’ must have
Rotation
Size zooming
Scanning
Brain Locus
How was “Rotation” tested for in visual mental imagery systems?
Through Rotation tasks, where there are two images of structures at different angles, and the subject must determine if the two structures are the same through mentally rotating it in their minds
How was “Size Zooming” tested for in visual mental imagery systems?
showing the subject 4 colored boxes of varying sizes, and having subject imagine an image in one of those boxes.
Assumption: reducing size in space, details are lost
Subjects took longer when the image was in a small box because they had to blow it up to describe specific details
How was “Scanning” tested for in visual mental imagery systems?
Subjects memorized a map and are able to imagine it in their minds.
Given instructions to move around on map in mind, and the time it took to move the distance was relative to the distance on the map. (greater distances, longer time)
How was “brain locus” tested for in visual mental imagery?
Activation was seen in the visual centers and in the language centers of the brain when given tasks in which you imagine images or are described images (?)
What is the process of visual mental imagery?
Early perceptual process->Visual experience screen->memory representations (ARROW BACK TO VES)->Visual mental imagery
How was confusability proven in Visual mental imagery?
(Perky et al) Subjects sat in front of a white screen and told to imagine an image on the screen, after a few trials a slight image was projected, and the subjects didn’t realize that it was actually their and not a product of their minds
What is Visual mental Imagery for?
it helps memory
tacit knowledge consciousness
preparing for future actions
Mental Imagery
ability to recreate the sensory world in the absence of Physical stimuli
Conceptual peg hypothesis (Paivio)
concrete nouns create images that other words can “hang onto”
Spacial Representation
Representation in which different parts of an image can be described as corresponding to different locations in space
Propositional Representation
Relationships can be represented by abstract symbols like equations or statements
Depictive representations
realistic pictures that resemble an object and parts of the representation correspond to parts of the actual object
Tacit Knowledge explanation
participants unconsciously use real world knowledge in making their judgements
Imagery Neurons
the Neurons that respond to both perceiving an object and to imagining it
Transcranial Magnetic Stimulation (TMS)
series of pulses presented to a particular area of the brain for a few seconds to decrease or eliminate brain functioning on that area for a few seconds or minutes
Unilateral Neglect
Patient ignores objects in one half of the visual feild
Method of Loci
Things to be remembered are placed at different places of a mental image of a spacial layout
Pegword Technique
Like method of Loci, except you associate items with concrete words with numbers
(utilized by creating mental associations between items to be remembered and items that are already associated with numbers)
Sentences
coherent sequences of words that express the intended meaning of a speaker
Words are composed of…
morphemes