Cited by 818Visual perception and processing mechanismsFace Recognition and PerceptionVisual Attention and Saliency Detection

Lateral interactions between spatial channels: Suppression and facilitation revealed by lateral masking experiments

Polat, Uri, Sagi, Dov·1993·Vision Research

Abstract

We measured contrast detection thresholds for a foveal Gabor signal flanked by two high contrast Gabor signals. The spatially localized target and masks enabled investigation of space dependent lateral interactions between foveal and neighboring spatial channels. Our data show a suppressive region extending to a radius of two wavelengths, in which the presence of the masking signals have the effect of increasing target threshold. Beyond this range a much larger facilitatory region (up to a distance of ten wavelengths) is indicated, in which contrast thresholds were found to decrease by up to a factor of two. The interactions between the foveal target and the flanking Gabor signals are spatial-frequency and orientation specific in both regions, but less specific in the suppression region.

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Crossref · 10.1016/0042-6989(93)90081-7

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  • In flank facilitation paradigms, control subjects find it easier to detect the central element when the flanks are present than when they are absent.

    “With some target-flank separations control subjects find it easier to detect the central element when the flanks are present than when they are absent (facilitation).”

    From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [52]

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Authors
Polat, U., & Sagi, D.
Affiliations
Weizmann Institute of Science (IL)
Venue
Vision Research
Publisher
Elsevier BV
Published
1993-05
Volume
33
Issue
7
Pages
993-999
ISSN
0042-6989 (ISSN-L)
OpenAlex
W2149316826
Cited by
818
References
32
Citations by year
2026: 5 · 2025: 20 · 2024: 9 · 2023: 10 · 2022: 14 · 2021: 9 · 2020: 17 · 2019: 16 · 2018: 18 · 2017: 17 · 2016: 19 · 2015: 24 · 2014: 39 · 2013: 20 · 2012: 26
FWCI
8.05
Type
journal article
Language
en
Open access
closed
Locations
  • Vision Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
Keywords
lateral interactions, lateral masking, contrast threshold, foveal vision, Gabor stimuli, suppression, facilitation, orientation specificity, visual masking
MeSH terms
Distance Perception, Humans, Pattern Recognition, Visual, Perceptual Masking, Psychometrics, Sensory Thresholds, Contrast Sensitivity

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