Anyone who has ever sensed that a person is sick simply by looking at their face has experienced the wealth of information conveyed by face color. A new study by the National Eye Institute (NEI), part of the National Institutes ...
Jul 9, 2019
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How are the images cast on the retina reassembled in the brain? Researchers in Munich and Tuebingen find that processing of visual stimuli occurs at the earliest waystation on the way to the visual cortex—but not all inputs ...
Feb 22, 2019
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Scientists have studied a visual illusion first discovered by Galileo Galilei, and found that it occurs because of the surprising way our eyes see lightness and darkness in the world. Their results advance our understanding ...
Feb 10, 2014
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To make decisions, we need to estimate the value of sensory stimuli and motor actions, their "goodness" and "badness." We can imagine that good and bad are two ends of a single continuum, or dimension, of value. This would ...
Aug 1, 2013
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Pain? Just turn it off! It may sound like science fiction, but researchers based in Munich, Berkeley and Bordeaux have now succeeded in inhibiting pain-sensitive neurons on demand, in the laboratory. The crucial element in ...
Feb 22, 2012
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(Medical Xpress) -- We all know that our pupils contract when our eyes are exposed to increases in the brightness of light. The reason is to both protect the delicate inner workings of our eyes and to help provide for optimum ...
Across the entire animal kingdom, visual images are processed by two major neuronal pathways that extract light and dark stimuli from visual scenes—ON (light on) and OFF (light off) pathways.
Nov 28, 2023
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Everyone with good vision knows the difference between a bright and dark day. In a bright day, the sky forms a homogeneous blue surface that can reflect as much as 30,000 cd/m2 of light whereas, in a dark day, the clouds ...
Sep 27, 2022
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A lot about the human brain and its intricacies continues to remain a mystery. With the advancement of neurobiology, the pathogenesis of several neurodegenerative diseases (ND) has been uncovered to a certain extent, along ...
Apr 19, 2021
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Japanese scientists are shedding new light on the importance of light-sensing cells in the retina that process visual information. The researchers isolated the functions of melanopsin cells and demonstrated their crucial ...
Aug 19, 2019
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