The visual pathway has been successfully modelled as containing separate channels
consisting of one achromatically opponent mechanism and two chromatically opponent …

The S-opponent pathway has a reputation for being sluggish relative to the L/M-opponent
pathway. Cottaris and De Valois [Nature 395 (1998) 896] claim that S-opponent signals are …

Precortical color vision is mediated by three independent opponent or cardinal mechanisms
that linearly combine receptoral outputs to form L/M, S/(L+ M), and L+ M channels. However …

Human vision is able to discriminate chromatic from achromatic changes under a wide
variety of spatiotemporal conditions. Objectively, we distinguish physically between a light …

The efficiency of chromatic and luminance signals was studied in a set of tasks requiring the
discrimination of two colors. Discrimination was measured around an adapting achromatic …

Attentional modulation is specific to either luminance or chromatic contrast discrimination,
implying separate attentional resources for processing luminance and chromatic information …

There has been considerable debate about how visual information is processed for the
perception of stimuli and the generation of motor responses to the same stimuli. While there …

Boynton and Kambe developed a model of chromatic discrimination in which thresholds are
mediated by two independent mechanisms: the short-wavelength sensitive (S-) cones (S …

Previous temporal masking studies using iso-oriented, luminance-defined (LD) target and
masking stimuli have estimated that there exist two sets of temporal channels: one low pass …

The first stage of human color vision is the encoding of light by the long (L), medium (M), and
short (S) wavelength sensitive cone photoreceptors. These signals are subsequently …