| Visual gap and offset discrimination and its relation to categorical identification in brief line-element displays. | |
| | |
MedLine Citation:
|
PMID: 2531211 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Visual processing was investigated in judgments of relative line position. Stimulus continua were generated by bisecting a straight line and displacing the segments. Experiment 1 measured discrimination of pairs of longitudinally displaced segments at equal steps along the continuum. At long (2 s) durations discrimination fell smoothly, but at short (100 ms) durations it was sharp-peaked. In Experiment 2 the short-duration stimuli were labeled with subsets of the labels no gap, just a gap, and more than just a gap. Theoretical discrimination performances were computed and the one based on no gap and just a gap closely fitted observed performance. Experiments 3 and 4 were similar to 1 and 2, with lateral replacing longitudinal displacement. Similar "categorical" performance was obtained. It was concluded that there are discrete mechanisms for early detection of relative line position and that 2 labels can be used to characterize performance in each direction. |
| | |
Authors:
|
D H Foster; M Ferraro |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of experimental psychology. Human perception and performance Volume: 15 ISSN: 0096-1523 ISO Abbreviation: J Exp Psychol Hum Percept Perform Publication Date: 1989 Nov |
Date Detail:
|
Created Date: 1989-12-28 Completed Date: 1989-12-28 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7502589 Medline TA: J Exp Psychol Hum Percept Perform Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 771-84 Citation Subset: IM |
Affiliation:
|
Department of Communication and Neuroscience University of Keele, Staffordshire, England. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Attention* Discrimination Learning* Female Form Perception* Humans Illusions* Male Optical Illusions* Orientation* Pattern Recognition, Visual* Size Perception |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Visual misalignment in arc and chevron figures.
Next Document: Two operations for "ratios" and "differences" of distances on the mental map.