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PMID: 1437491 Published · ppublish English Journal Article Research Support, U.S. Gov't, Non-P.H.S.

Improvement in line orientation discrimination is retinally local but dependent on cognitive set.

Perception & psychophysics ·Vol. 52 ·No. 5 ·1992-11-00 ·Pages 582-8

Shiu LP, Pashler H

Abstract

The ability of human observers to discriminate the orientation of a pair of straight lines differing by 3 degrees improved with practice. The improvement did not transfer across hemifield or across quadrants within the same hemifield. The practice effect occurred whether or not observers were given feedback. However, orientation discrimination did not improve when observers attended to brightness rather than orientation of the lines. This suggests that cognitive set affects tuning in retinally local orientation channels (perhaps by guiding some form of unsupervised learning mechanism) and that retinotopic feature extraction may not be wholly preattentive.

MeSH Terms

Adult Attention Cognition Discrimination Learning Humans Orientation Pattern Recognition, Visual Practice, Psychological Set, Psychology Transfer, Psychology Visual Fields

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Shiu L P

University of California, San Diego, La Jolla.

Pashler H

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15 references, click to expand

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Article Info

Journal

Perception & psychophysics

Abbr.

Percept Psychophys

ISSN

0031-5117

DOI

10.3758/bf03206720

Published

1992-11-00

Pages

582-8

Language

English

Region

United States

NLM ID

0200445

External Links

PubMed source DOI: 10.3758/bf03206720

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Improvement in line orientation discrimination is retinally local but dependent on cognitive set.

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