Lightness perception is the perception of achromatic surface colors: black, white, and
shades of grey. Lightness has long been a central research topic in experimental …

Background Previous studies have suggested that processing of visual contrast information
could be altered in major depressive disorder. To clarify the changes at different levels of the …

Visual illusions teach us that what we see is not always what is represented in the physical
world. Their special nature make them a fascinating tool to test and validate any new vision …

A neural theory of human lightness computation is described and computer-simulated. The
theory proposes that lightness is derived from transient ON and OFF cell responses in the …

Illusions are often considered to be a misperception of the physical world. We present a
different framework for illusions: in non-illusory conditions, healthy brains construct a single …

One well-established characteristic of early visual processing is the contrast sensitivity
function (CSF) which describes how sensitivity varies with the spatial frequency (SF) content …

Lightness perception is the ability to perceive black, white, and gray surface colors in a wide
range of lighting conditions and contexts. This ability is fundamental for any biological or …

Human vision relies on mechanisms that respond to luminance edges in space and time.
Most edge models use orientation-selective mechanisms on multiple spatial scales and …

The perception and evaluation of art might be governed by both stimulus-driven aspects and
expectations of the observer. By framing actual artwork and actual scientific depictions as …

Visual illusions in humans arise when interpreting out-of-distribution stimuli: if the observer
is adapted to certain statistics, perception of outliers deviates from reality. Recent studies …