PERCEPTION/COGNITION

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1 total messages Started by Allison Sekuler Sat, 23 Jan 1993 23:34

#498

Author: Allison Sekuler
Date: Sat, 23 Jan 1993 23:34

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                  *RESEARCH GROUP IN PERCEPTION*


                        PIERRE JOLICOEUR
                     University of Waterloo


      "ORIENTATION EFFECTS IN VISUAL OBJECT PERCEPTION:
       SPINNING A NEW YARN USING OLD AND NEW FEATURES."


3 pm, Friday, January 29, 1993 
Room 317 of 1 Spadina Crescent,
University of Toronto, St. George Campus.

Abstract:
The time needed to identify objects from two-dimensional depictions
can be affected sharply by the orientation of the depicted object.
The orientation effects have a number of robust characteristics that
will be described in the talk.  In particular I will review studies
that

 * estimated the magnitude of the effect across different stimulus
   materials, 
 * compared the effect magnitudes in identification experiments
   with that in mental rotation experiments,
 * explored the shape of the orientation function for pattern recognition,
 * measured effects of learning and transfer of learning,
 * estimated the orientation of the perceptual frame of reference
   used to perform various tasks.

Recent results from a naming task and a top-bottom discrimination
task based on a large sample of subjects will be summarized
and used to evaluate various claims in extant theories of object
perception.



All are welcome. Donut holes at 3, talk at 3:10.
For more information please contact Allison Sekuler at
978-1537 or sekuler@psych.toronto.edu

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