Control of chromatic adaptation: signals from separate cone classes interact

Corrigendum to “Control of chromatic adaptation: Signals from separate cone classes interact” [Vision Research 40 (2000) 2885–2903]

Luminance and chromatic signals interact differently with melanopsin activation to control the pupil light response

Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin. These cells receive afferent inputs from rods and cones, which provide inputs to the postreceptoral visual pathways. It is unknown, however, how melanopsin activation is integrated with postreceptoral signals to control the pupillary light reflex. This study reports human flicker pupillary response...

Link-specific adaptation in the luminance and chromatic channels.

We present evidence that adaptation occurs in the separate links that connect the receptors to the luminance and the chromatic channels. The relative effectiveness of the L and M cone inputs to the luminance and red/green chromatic channels was determined by using, respectively, heterochromatic flicker photometry and a cancellation technique which maintained a pure yellow. The findings provide ...

A distributed code for color in natural scenes derived from center-surround filtered cone signals

In the retina of trichromatic primates, chromatic information is encoded in an opponent fashion and transmitted to the lateral geniculate nucleus (LGN) and visual cortex via parallel pathways. Chromatic selectivities of neurons in the LGN form two separate clusters, corresponding to two classes of cone opponency. In the visual cortex, however, the chromatic selectivities are more distributed, w...

S-cone signals to temporal OFF-channels: asymmetrical connections to postreceptoral chromatic mechanisms

Psychophysical tests of S-cone contributions to temporal ON- and OFF-channels were conducted. Detection thresholds for S-cone modulation were measured with two kinds of test stimuli presented on a CRT: a rapid-on sawtooth test and a rapid-off sawtooth test, assumed to be detected differentially by temporal ON- and OFF-channels, respectively. S-cone related ON- and OFF-temporal responses were se...