Synaesthesia

In response to a stimulus that is present, such as a letter or a number, people with synaesthesia perceive an attribute that is not present, such as a color.  For individual synaesthetes, these pairings are highly specific to individual letters or numbers and are remarkably stable over time.  For instance, the number 7 might always be red to one synaesthete while the letter R might be yellowish-green.  The color-form pairings are not the same across subjects.  A new line of research examines this particular form of synaesthesia -- grapheme-color synaesthesia -- within the context of a reentrant model of visual perception.

 

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·       segmentation; shape and object perception

·       object recognition

·       perceptual learning

·       interactions between depth cues and shape cues

·       context effects

·       attention

·       grouping

·       visual binding

·       synaesthesia

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