Spatial summation improves bird color vision in low light intensities
Sign Up to like & getrecommendations! Published in 2017 at "Vision Research"
DOI: 10.1016/j.visres.2016.10.009
Abstract: ABSTRACT Color guides many important behaviors in birds. Previously we have shown that the intensity threshold for color discrimination in the chicken depends on the color contrast between stimuli and their brightness. The birds could… read more here.
Keywords: color; color vision; low light; spatial summation ... See more keywords
Altered spatial summation optimizes visual function in axial myopia
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-67893-8
Abstract: This study demonstrates significant differences between the area of complete spatial summation (Ricco’s area, RA) in eyes with and without non-pathological, axial myopia. Contrast thresholds were measured for six stimuli (0.01–2.07 deg2) presented at 10º… read more here.
Keywords: length; myopia; spatial summation; axial myopia ... See more keywords
Thermonociceptive interaction: interchannel pain modulation occurs before intrachannel convergence of warmth.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of neurophysiology"
DOI: 10.1152/jn.00341.2018
Abstract: Nonnoxious warmth reduces both perceived pain intensity and the amplitude of EEG markers of pain. However, the spatial properties of thermonociceptive interaction, and the level of sensory processing at which it occurs, remain unclear. We… read more here.
Keywords: warmth; thermonociceptive interaction; pain; spatial summation ... See more keywords
Spatial summation of broadband contrast.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of vision"
DOI: 10.1167/19.5.16
Abstract: Spatial summation of luminance contrast signals has historically been psychophysically measured with stimuli isolated in spatial frequency (i.e., narrowband). Here, we revisit the study of spatial summation with noise patterns that contain the naturalistic 1/fα… read more here.
Keywords: summation; contrast; spatial summation; spatial frequency ... See more keywords
Spatial summation of individual cones in human color vision
Sign Up to like & getrecommendations! Published in 2019 at "PLoS ONE"
DOI: 10.1371/journal.pone.0211397
Abstract: The human retina contains three classes of cone photoreceptors each sensitive to different portions of the visual spectrum: long (L), medium (M) and short (S) wavelengths. Color information is computed by downstream neurons that compare… read more here.
Keywords: color; spatial summation; summation individual; optics ... See more keywords