Cited by 395Visual perception and processing mechanismsFace Recognition and PerceptionMotor Control and Adaptation

Mechanisms of perceptual learning

Open access
Dosher, Barbara Anne, Lu, Zhong-Lin·1999·Vision Research

Abstract

Systematic measurements of perceptual learning were performed in the presence of external or stimulus noise. In the new external noise method (Dosher, B, & Lu, Z.-L. (1997). Investigative Ophthalmology and Visual Science, 38, S687; Lu, Z.-L., & Dosher, B. (1998). Vision Research, 38, 1183-1198), increasing amounts of external noise (white Gaussian random noise) is added to the visual stimulus in order to identify mechanisms of perceptual learning. Performance improved (threshold contrast was reduced) over days of practice on a peripheral orientation discrimination task--labelling Gabor patches as tilted slightly to the right or left. Practice improvements were largely specific to the trained quadrant of the display. Performance improved at all levels of external noise. The external noise method and perceptual template model (PTM) of the observer identifies the mechanism(s) of performance improvements as due to stimulus enhancement, external noise exclusion, or internal noise suppression. The external noise method was further extended by measuring thresholds at two threshold performance levels, allowing identification of mixtures in the PTM model. Perceptual learning over 8-10 days improved the filtering or exclusion of external noise by a factor of two or more, and improved suppression of additive internal noise--equivalent to stimulus enhancement--by 50% or more. Coupled improvements in external noise exclusion and stimulus enhancement in the PTM model may reflect channel weighting. Perceptual learning may not reflect neural plasticity at the level of basic visual channels, nor cognitive adjustments of strategy, but rather plasticity at an intermediate level of weighting inputs to decision.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/s0042-6989(99)00059-0

Cites

83 of 83 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Lu, Z.-L., & Dosher, B. (1998b). Distractor exclusion underlies improvement in form discrimination following a location precue. Proceedings of the Annual Meeting of the Psychonomic Society, 1, 21.
  2. Pelli, D.G. (1981). Effects of 6isual noise, Ph.D. Dissertation, Univer- sity of Cambridge, Cambridge, UK.

Cited by

Sorted by citations

Authors
Dosher, B. A., & Lu, Z.-L.
Affiliations
  • University of California, Irvine (US)
  • University of Southern California (US)
Corresponding author
Dosher, Barbara Anne
Venue
Vision Research
Publisher
Elsevier BV
Published
1999-10
Volume
39
Issue
19
Pages
3197-3221
ISSN
0042-6989 (ISSN-L)
OpenAlex
W2113860392
Cited by
394
References
82
Citations by year
2026: 13 · 2025: 7 · 2024: 10 · 2023: 11 · 2022: 9 · 2021: 12 · 2020: 13 · 2019: 10 · 2018: 14 · 2017: 13 · 2016: 13 · 2015: 17 · 2014: 22 · 2013: 19 · 2012: 18
FWCI
4.80
Type
journal article
Language
en
Open access
Locations
  • Vision Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Air Force
  • Air Force Office of Scientific Research
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
perceptual learning, orientation discrimination, Gabor patches, peripheral vision, perceptual template model, stimulus enhancement, channel weighting, contrast threshold, neuroplasticity
MeSH terms
Discrimination, Psychological, Humans, Learning, Models, Psychological, Perception, Psychophysics, Signal Detection, Psychological

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review