ePrints

An empirical study of the traditional Mach card effect

Lookup NU author(s): Dr Marina Bloj, Professor Anya Hurlbert

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

The traditional achromatic Mach card effect is an example of lightness inconstancy and a demonstration of how shape and lightness perception interact. We present a quantitative study of this phenomenon and explore the conditions under which it occurs. The results demonstrate that observers show lightness constancy only when sufficient information is available about the light-source position, and the perceptual task required of them is surface identification rather than direct colour-appearance matching. An analysis and comparison of these results with the chromatic Mach card effect (Bloj et al 1999 Nature 402 877-879) demonstrate that the luminance effects of mutual illumination do not account for the change in lightness perception in the traditional Mach card.

Publication metadata

Author(s): Hurlbert AC; Bloj MG

Publication type: Article

Publication status: Published

Journal: Perception

Year: 2002

Volume: 31

Issue: 2

Pages: 233-246

Print publication date: 01/01/2002

ISSN (print): 0301-0066

ISSN (electronic): 1468-4233

Publisher: Pion Ltd

URL: http://dx.doi.org/10.1068/p01sp

DOI: 10.1068/p01sp

PubMed id: 11922135

Altmetrics

Share