Abstract：
:Physiological studies of non-human primates have suggested that the direction of gaze can modulate the gain of neuronal responses to visual stimuli in many cortical areas including V1. The neural gaze modulation is suggested to subserve the conversion from gaze-independent (eye-centered) to dependent (e.g., head-centered) representations. However, it has not been established whether the gaze modulation has significant influences on human visual perception. Here we show that gaze direction modestly but significantly modulates the magnitudes of the motion aftereffect, the tilt aftereffect and the size aftereffect. These aftereffects were stronger when the adaptation and test patterns were presented in the same gaze direction, than when they were presented in different gaze directions, even though the patterns always stimulated the same retinal location. The gaze modulation effect was not statistically significant for the post-adaptation elevation of contrast detection thresholds. The gaze modulation of visual aftereffects provides a useful psychophysical tool to analyze human cortical processes for coordinate transformations of visual space.
journal_name
Vision Resjournal_title
Vision researchauthors
Nishida S,Motoyoshi I,Andersen RA,Shimojo Sdoi
10.1016/s0042-6989(03)00007-5subject
Has Abstractpub_date
2003-03-01 00:00:00pages
639-49issue
6eissn
0042-6989issn
1878-5646pii
S0042698903000075journal_volume
43pub_type
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