Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia.

Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Research Abstract Details 

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Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Abstract Text:

Peter Neri,Jennifer Y Luu,Dennis M Levi,Peter Neri,Jennifer Y Luu,Dennis M Levi,

The low-level deficits associated with amblyopia have been studied extensively, but very little is known about potential impairments to higher-level visual processing such as object recognition or structure-from-motion. Studies on biological motion, a complex form of structure-from-motion depicting human actions, have demonstrated that normal observers can analyze these patterns more effectively when they are shown in their original upright configuration as opposed to inverted upside-down (feet-up head-down). We measured this inversion effect quantitatively for both the dominant and amblyopic eyes of amblyopic observers. We found a modest ( approximately 30%) loss in sensitivity in the amblyopic eye for both upright and inverted actors, which we attribute to low-level deficits. However, we found no difference in the inversion effect between the two eyes, both showing an average 1/2 log-unit drop in sensitivity between upright and inverted displays. Our data provide a quantitative estimate of the inversion effect for biological motion, and demonstrate that higher-level processing in the motion hierarchy is not affected by amblyopia.

Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Publishing Authors By Initials

P Neri,JY Luu,DM Levi,P Neri,JY Luu,DM Levi,

For similar visual acuity research abstracts see: visual acuity research

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Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Vision research

VOLUME: 47

Page Numbers: 1209-14

Journal Abbreviation: Vision Res.

ISSN: 0042-6989

DAY: 21

MONTH: 03

YEAR: 2007

Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Information

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LANGUAGE: eng

NlmUniqueID: 417402

Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia. Keywords Mesh Terms:

KEYWORDS: Visual Acuity

MESH TERMS: methods

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Grant and Affiliation Information for Sensitivity to biological motion drops by approximately 1/2 log-unit with inversion, and is unaffected by amblyopia.

AFFILIATION: School of Optometry, University of California at Berkeley, Berkeley, CA 94720-2020, USA. pn@white.stanford.edu

Country: England

AGENCY: United States NEI

GRANT: R01 EY01728

ACRONYM: EY

MEDLINETA: Vision Res

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