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Abstract:
Previous imaging studies have attempted to distinguish the
cortical regions associated with different kinds of stereoscopic
depth perception. However, those studies were based upon a division
between 'course' and 'fine' stereopsis, so the stimuli and methods
did not result in a clear mapping. A better experimental paradigm
can avoid "mixing apples with oranges". In April, 1999, I published
the results of a set of psychophysics experiments using specific
types of stimuli to show clearly that stereopsis was dissociated
into two kinds (Vision Research, 39, 1491-1507). The results of my
subsequent work confirmed that binocular correspondence consists of
two distinct processes (Ziegler, submitted). Here, I present a new
experimental paradigm, including specific tasks and stimuli, and I
describe how it can best identify and resolve the regions involved
with each process.
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