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9 Cards in this Set
- Front
- Back
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Learning outcomes |
# Be able to define imagery; # Be able to provide evidence for imagery and how it differs from visual perception; # Be able to describe how children and adults differ in their use of imagery; # Be able to describe some functions of imagery; # Be able to describe functions of imagery in psychopathology. |
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What is imagery? |
Imagery - a form of representation that is similar to the first stages of perception *BUT* is based on the memory, rather than raw sensory input info. |
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What is the difference between visual perception & imagery? |
Visual perception - patterns of neural activation capture spatial structure of object imposed on the retina. Imagery – representation is created to make explicit and accessible properties of objects. |
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Why don't humans confuse images with perceptions? |
1) Images are constructed consciously & deliberately. [we are aware when we engage in imagination].
2) Images usually are less detailed. |
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Outline the perceptual anticipation theory (Kossyln, 2005). |
# Visual perception and visual imagery depend on the same visual buffer. # Brain areas involved in imagery are the same as the ones involved in early visual processing. # Images are organized spatially in the same ways as information within a percept. |
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What are the 2 predictions that follow from the perceptual anticipation theory? |
# Facilitation, # Interference. |
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What is the Facilitation prediction from the Perceptual anticipation theory about? |
.... |
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Which experiment provided evidence for Facilitation? |
Experiment by Pearson, Clifford & Tong (2008).
>> METHOD Participants told to either perceive or imagine a green or red horizontal grating. Then see a visual display in which green grating was presented to one eye and the red grating presented to the other eye at different visual orientations.
>> RESULTS When two different stimuli presented one to each eye there is binocular rivalry. Under binocular rivalry conditions the stimulus originally perceived or imagined was more likely to be perceived. Degree of orientation of the grating made a difference. Consequently, only one of two stimuli is consciously perceived. |
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What conclusion on the Facilitation was made basing on the experiment by Pearson, Clifford & Tong (2008)? |
Findings imply that visual imagery relies on the processes similar to visual perception. |
