• A
  • A
  • A
  • ABC
  • ABC
  • ABC
  • А
  • А
  • А
  • А
  • А
Regular version of the site

Book chapter

The Adaptation Aftereffect of Mean Size Precedes Size-Distance Rescaling

P. 128-128.

The adaptation aftereffect (AAE) of mean size suggests
that mean size is coded as a basic visual property. Also,
size-distance rescaling of individual objects occurs prior to
averaging. Because it is unclear whether the AAE is based
on rescaled mean size, we tested the degree of AAE as a
function the apparent mean size of stimuli presented at
different depths. Observers were stereoscopically shown
an adapting patch of dots with either a large or small mean
size, followed by a brief test circle. Adaptors and tests
were presented at a near and a far plane, both in the
same or in different planes. Observers then adjusted the
size of a probe in the middle plane to match the test size.
We found evidence of the AAE and for test size rescaling,
but no effect of whether the adaptor and test were presented
in the same or in different planes. Our results suggest
that the AAE of mean size take places at a lower level
of visual processing than size-distance rescaling. This study
was funded by RFBR #18-313-00253.