The sensorimotor contingency theory hypothesises that our experience
of a rich, colourful, environment derives not simply from the information originating from sensory input channels, but also from the laws that
these signals obey when the observer or the stimulus move. In one experiment, subjects are shown a coloured bar, which either moves outward from the
fovea, or inward from the periphery. If the stimulus changes colour on
stopping, subjects generally see it as being the same colour as they previously saw in central vision, confirming that our perception of colour is
affected by prior visual exploration. A second test of the theory concerns
the impli- cation that modifications of sensorimotor laws must
result in changes in subjective experience, with these changes being stronger when the observer is active in sensory exploration. We present results
from an experiment where we adapted subjects to new sensorimotor
laws between colour and eye movements. During an adaptation phase, subjects
pursue a figure on a screen. Figure or screen colours are modified depending
on gaze direction. Tests of position-dependent colour judgments before
and after the adaptation phase demonstrate effects of the adaptation.
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