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Related Experiment Video

Updated: May 29, 2026

Visualizing Visual Adaptation

Visualizing Visual Adaptation

Published on: April 24, 2017

Evidence for a subtractive component in motion adaptation.

M J Morgan¹, C Chubb, J A Solomon

¹Max-Planck Neurological Institute, Cologne, Germany. Michael.Morgan@nf.mpg.de

Vision Research

|September 28, 2011

Summary

This summary is machine-generated.

Visual adaptation to moving stimuli alters motion perception and contrast sensitivity. This study reveals adaptation effects on motion perception cannot be solely predicted by contrast sensitivity changes, suggesting additional recalibration mechanisms.

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Area of Science:

Visual perception
Neuroscience
Psychophysics

Background:

Adaptation to moving stimuli alters visual perception and reduces contrast sensitivity.
The relationship between these two effects is not fully understood.

Purpose of the Study:

To investigate if changes in contrast sensitivity predict alterations in motion perception after adaptation to moving gratings.
To explore the mechanisms underlying adaptation to moving visual stimuli.

Main Methods:

Determined contrast discrimination functions for drifting gratings after adaptation to same- or opposite-direction moving grators.
Measured the effect of adaptation on the motion-null point for counterphasing gratings.

Main Results:

Adaptation to same-direction motion shifted contrast discrimination functions, consistent with increased divisive inhibition.
Adaptation shifted the motion-null point, but this shift was not predictable from contrast sensitivity changes, especially at high contrasts.
The motion-null point shift occurred even when contrast discrimination was unaffected.

Conclusions:

Visual adaptation involves more than just changes in contrast transduction; a subtractive recalibration effect is also implicated.
This subtractive effect may contribute to phenomena like the motion aftereffect with stationary tests.