The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information

T. Maddess; M. P. Davey; M. V. Srinivasan; A. C. James

doi:10.1111/j.1442-9071.1998.tb01387.x

The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information

T. Maddess^*, M. P. Davey, M. V. Srinivasan, A. C. James

^*Corresponding author for this work

Research School of Biology

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

1 Citation (Scopus)

Abstract

Background: The Craik-O'Brien-Cornsweet effect (COCE) is a visual illusion where the luminance of image boundaries sets the apparent brightness of enclosed regions. The COCE may be produced by the cortex constructing the observed brightness through a lateral 'filling-in' process: propagating brightness information from the edges of the enclosed regions towards their centres. Any such filling-in process would imply a speed of propagation. Methods: Data on the propagation speed of brightness information in two different brightness induction effects are compared using a multivariate regression analysis. Results/Conclusion: We demonstrate similar non-zero speeds for the COCE and for a brightness contrast effect.

Original language	English
Pages (from-to)	S95-S97
Number of pages	3
Journal	Australian and New Zealand Journal of Ophthalmology
Volume	26
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1111/j.1442-9071.1998.tb01387.x
Publication status	Published - 7 Dec 2009

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10.1111/j.1442-9071.1998.tb01387.x

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title = "The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information",

abstract = "Background: The Craik-O'Brien-Cornsweet effect (COCE) is a visual illusion where the luminance of image boundaries sets the apparent brightness of enclosed regions. The COCE may be produced by the cortex constructing the observed brightness through a lateral 'filling-in' process: propagating brightness information from the edges of the enclosed regions towards their centres. Any such filling-in process would imply a speed of propagation. Methods: Data on the propagation speed of brightness information in two different brightness induction effects are compared using a multivariate regression analysis. Results/Conclusion: We demonstrate similar non-zero speeds for the COCE and for a brightness contrast effect.",

keywords = "Cortical processing, Craik-O'Brien-Cornsweet effect, Filling-in velocity, Illusory brightness, Lateral interactions, Visual cortex",

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doi = "10.1111/j.1442-9071.1998.tb01387.x",

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T1 - The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information

AU - Maddess, T.

AU - Davey, M. P.

AU - Srinivasan, M. V.

AU - James, A. C.

PY - 2009/12/7

Y1 - 2009/12/7

N2 - Background: The Craik-O'Brien-Cornsweet effect (COCE) is a visual illusion where the luminance of image boundaries sets the apparent brightness of enclosed regions. The COCE may be produced by the cortex constructing the observed brightness through a lateral 'filling-in' process: propagating brightness information from the edges of the enclosed regions towards their centres. Any such filling-in process would imply a speed of propagation. Methods: Data on the propagation speed of brightness information in two different brightness induction effects are compared using a multivariate regression analysis. Results/Conclusion: We demonstrate similar non-zero speeds for the COCE and for a brightness contrast effect.

AB - Background: The Craik-O'Brien-Cornsweet effect (COCE) is a visual illusion where the luminance of image boundaries sets the apparent brightness of enclosed regions. The COCE may be produced by the cortex constructing the observed brightness through a lateral 'filling-in' process: propagating brightness information from the edges of the enclosed regions towards their centres. Any such filling-in process would imply a speed of propagation. Methods: Data on the propagation speed of brightness information in two different brightness induction effects are compared using a multivariate regression analysis. Results/Conclusion: We demonstrate similar non-zero speeds for the COCE and for a brightness contrast effect.

KW - Cortical processing

KW - Craik-O'Brien-Cornsweet effect

KW - Filling-in velocity

KW - Illusory brightness

KW - Lateral interactions

KW - Visual cortex

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DO - 10.1111/j.1442-9071.1998.tb01387.x

M3 - Article

SN - 0814-9763

VL - 26

SP - S95-S97

JO - Australian and New Zealand Journal of Ophthalmology

JF - Australian and New Zealand Journal of Ophthalmology

IS - SUPPL. 1

ER -

The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information

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