eprintid: 1473726
rev_number: 32
eprint_status: archive
userid: 608
dir: disk0/01/47/37/26
datestamp: 2016-01-07 17:16:21
lastmod: 2021-10-04 01:44:12
status_changed: 2016-01-08 16:55:36
type: article
metadata_visibility: show
creators_name: Petrova, D
creators_name: Henning, GB
creators_name: Stockman, A
title: The temporal characteristics of the early and late stages of L- and M-cone pathways that signal brightness
ispublished: pub
divisions: UCL
divisions: B02
divisions: C07
divisions: D08
keywords: brightness, color vision, flicker sensitivity, luminance, nonlinearity, saturation, temporal processing, Adult, Color Vision, Contrast Sensitivity, Female, Flicker Fusion, Humans, Light, Male, Retinal Cone Photoreceptor Cells, Sensory Thresholds, Visual Pathways
note: Copyright © 2013 ARVO.
abstract: Flickering 560-nm light appears brighter and less saturated than steady light of the same average intensity. The changes in appearance are consistent with the visual signal's being distorted at some nonlinear site (or sites) within the visual pathway at which new temporal components, not part of the original waveform, are produced. By varying the input stimulus to manipulate these new temporal components--called distortion products--and measuring our observers' sensitivity in detecting them, we derived the temporal attenuation characteristics of the early (prenonlinearity) and late (post-nonlinearity) stages of the L- and M-cone pathway that signals brightness. We found that the early stage acts like a band-pass filter peaking at 10-15 Hz with sensitivity losses at both lower and higher frequencies, whereas the late stage acts like a two-stage low-pass filter with a corner frequency near 3 Hz. Although brightness is often associated with the fast achromatic or luminance pathway, these filter characteristics, and particularly those of the late filter, are consistent with comparable features of the L-M chromatic pathway that produce mainly chromatic distortion products (Petrova, Henning, & Stockman, 2013). A plausible site for the nonlinearity is after surround antagonism from horizontal cells. Modeling suggested the form of the nonlinearity to be initially expansive but possibly with a hard limit at the highest input levels.
date: 2013-06
date_type: published
official_url: http://dx.doi.org/10.1167/13.7.15
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
article_type_text: Journal Article
verified: verified_manual
elements_id: 879923
doi: 10.1167/13.7.15
pii: 13.7.15
lyricists_name: PETROVA, DANIELA
lyricists_name: Stockman, Andrew
lyricists_id: DPETR08
lyricists_id: ASTOC88
actors_name: Stockman, Andrew
actors_name: Allington-Smith, Dominic
actors_id: ASTOC88
actors_id: DAALL44
actors_role: owner
actors_role: impersonator
full_text_status: public
publication: Journal of Vision
volume: 13
number: 7
article_number: 15
event_location: United States
issn: 1534-7362
citation:        Petrova, D;    Henning, GB;    Stockman, A;      (2013)    The temporal characteristics of the early and late stages of L- and M-cone pathways that signal brightness.                   Journal of Vision , 13  (7)    , Article 15.  10.1167/13.7.15 <https://doi.org/10.1167/13.7.15>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1473726/1/Stockman_LM%20brightness%20in%20press.pdf
document_url: https://discovery.ucl.ac.uk/id/eprint/1473726/2/Stockman_LM%20Brightness%20figures%201-10.pdf