Publication Date:
1979-12-14
Description:
After viewing a suitable grating of vertical stripes for 5 minutes, subjects overestimated the width of a rectangle by 6 percent. The shifts in perception of size occurred whether individual stripes in the grating were narrower than, equal to, or wider than the rectangle. Rectangle width was underestimated only if the grating stripes were extremely wide, with a spatial frequency lower than most of the effective amplitude spectrum of the rectangle. These findings (and complementary ones with horizontal gratings) suggest that the visual system codes size on the basis of spatial frequency components, rather than directly in terms of width.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Frome, F S -- Levinson, J Z -- Danielson, J T -- Clavadetscher, J E -- New York, N.Y. -- Science. 1979 Dec 14;206(4424):1327-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/515736" target="_blank"〉PubMed〈/a〉
Keywords:
*Adaptation, Physiological
;
Humans
;
Size Perception/*physiology
;
Visual Fields
;
Visual Perception/*physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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