[Abstract Title]. - Society for Neuroscience

Topic: D.04.j. Processing of objects and faces
Title: The effect of priming on feature binding theory: stimulus feature distortion?
Authors: *E. M. PARZYCH;
Franklin & Marshall Col., Stone Harbor, NJ
Abstract: TreismanAs Feature Binding Theory (FBT) states that visual features sharing the
same spatial location are bound together through attention, resulting in the perception of a whole
object. In situations where attention or focus is limited, binding errors are made that result in
illusory conjunctions (1998). This study further explored the FBT and the formation of illusory
conjunctions through temporal manipulation. A colored line acted as the prime, followed by a
square of the opposite color serving as the target stimulus. Participants were asked to describe
the color and shape they perceived. Results of multiple Related-Sample T-tests indicated
significant shape and color distortion, with some indications of complete illusory conjunctions,
where the target was reported to be the color of the prime. These results reproduce the Shape-
Contrast Effect previously described by Suzuki and Cavanagh (1998) and also support
TreismanAs FBT, although illusory conjunctions were not expected; color mixing was the
primary predicted result.
Disclosures: E.M. Parzych , None.
Poster
260. Objects and Faces in Humans II
Time: Sunday, November 16, 2008, 1:00 pm - 5:00 pm
Program#/Poster#: 260.16/BB28
Topic: D.04.j. Processing of objects and faces
Support: NIH Grant EY016464
Title: The sum of its parts? Decoding the representation of multiple simultaneous stimuli in
human object-selective cortex
Authors: *S. P. MACEVOY, R. A. EPSTEIN;
Dept. of Psychology, Univ. of Pennsylvania, Philadelphia, PA
Abstract: During normal visual behavior, the brain must simultaneously encode information
about multiple objects within the environment. Although previous fMRI studies have shown that
information about the category of single objects is contained in distributed patterns of activity in