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 …

Abstract The Gastro-Intestinal (GI) tract is a tunnel of the digestive system that goes right
through the body from the mouth to the anus. The nutrients which are present in the food are …

A central question in psychophysical research is how perceptual differences between stimuli
translate into physical differences and vice versa. Characterizing such a psychophysical …

It is still an unresolved question how the visual system perceives surface lightness given the
ambiguity of the sensory input signal. We studied lightness perception using two …

White's illusion is the perceptual effect that two equiluminant gray patches superimposed on
a black-and-white square-wave grating appear different in lightness: A test patch placed on …

One central problem in perception research is to understand how internal experiences are
linked to physical variables. Most commonly, this relationship is measured using the method …

Prior research has demonstrated high levels of color constancy in real-world scenarios
featuring single light sources, extensive fields of view, and prolonged adaptation periods …

A key question in perception research is how stimulus variations translate into perceptual
magnitudes, that is, the perceptual encoding process. As experimenters, we cannot probe …

Visual perception of object attributes such as surface lightness is crucial for successful
interaction with the environment. How the visual system assigns lightness to image regions …

Objective: The objective of the study was to find reliability of Lea contrast sensitivity chart
and its comparison with Pelli-Robson chart taking the latter as gold standard. Method …