Changing the Chevreul illusion by a background luminance ramp: lateral inhibition fails at its traditional stronghold--a psychophysical refutation.
The Chevreul illusion is a well-known 19(th) century brightness illusion, comprising adjacent homogeneous grey bands of different luminance, which are perceived as inhomogeneous.It is generally explained by lateral inhibition, according to which brighter areas projected to the retina inhibit the sensitivity of neighbouring retinal areas.Lateral inh