Motion transparency from opposing luminance modulated and contrast modulated gratings

Ross Goutcher; Gunter Loffler

doi:10.1016/j.visres.2009.01.008

Motion transparency from opposing luminance modulated and contrast modulated gratings

Ross Goutcher, Gunter Loffler

Vision Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Two luminance gratings of identical orientation and opposite directions of motion are seen as moving across one another (i.e. moving transparently) only if they differ in spatial frequency (SF) by a factor of four or more. Identical SF gratings produce counter-phase flicker. This suggests that opposite motions cancel each other at the level of motion detection. Here we show that motion transparency is perceived with two gratings of the same SF and orientation moving in opposite directions, when one grating is a first-order, luminance modulated (LM) stimulus and the other is a second-order, contrast modulated (CM) stimulus.

Original language	English
Pages (from-to)	660-670
Number of pages	11
Journal	Vision Research
Volume	49
Issue number	7
DOIs	https://doi.org/10.1016/j.visres.2009.01.008
Publication status	Published - 1 Apr 2009

Keywords

optics
motion transparency
vision sciences

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10.1016/j.visres.2009.01.008

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title = "Motion transparency from opposing luminance modulated and contrast modulated gratings",

abstract = "Two luminance gratings of identical orientation and opposite directions of motion are seen as moving across one another (i.e. moving transparently) only if they differ in spatial frequency (SF) by a factor of four or more. Identical SF gratings produce counter-phase flicker. This suggests that opposite motions cancel each other at the level of motion detection. Here we show that motion transparency is perceived with two gratings of the same SF and orientation moving in opposite directions, when one grating is a first-order, luminance modulated (LM) stimulus and the other is a second-order, contrast modulated (CM) stimulus.",

keywords = "optics, motion transparency, vision sciences",

author = "Ross Goutcher and Gunter Loffler",

note = "<p>Originally published in: Vision Research (2009), 49 (7), pp.660-670.</p>",

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AU - Loffler, Gunter

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PY - 2009/4/1

Y1 - 2009/4/1

N2 - Two luminance gratings of identical orientation and opposite directions of motion are seen as moving across one another (i.e. moving transparently) only if they differ in spatial frequency (SF) by a factor of four or more. Identical SF gratings produce counter-phase flicker. This suggests that opposite motions cancel each other at the level of motion detection. Here we show that motion transparency is perceived with two gratings of the same SF and orientation moving in opposite directions, when one grating is a first-order, luminance modulated (LM) stimulus and the other is a second-order, contrast modulated (CM) stimulus.

AB - Two luminance gratings of identical orientation and opposite directions of motion are seen as moving across one another (i.e. moving transparently) only if they differ in spatial frequency (SF) by a factor of four or more. Identical SF gratings produce counter-phase flicker. This suggests that opposite motions cancel each other at the level of motion detection. Here we show that motion transparency is perceived with two gratings of the same SF and orientation moving in opposite directions, when one grating is a first-order, luminance modulated (LM) stimulus and the other is a second-order, contrast modulated (CM) stimulus.

KW - optics

KW - motion transparency

KW - vision sciences

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EP - 670

JO - Vision Research

JF - Vision Research

SN - 0042-6989

IS - 7

ER -

Motion transparency from opposing luminance modulated and contrast modulated gratings

Abstract

Keywords

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