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Visual PsychophysicsFrom Laboratory to Theory$
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Zhong-Lin Lu and Barbara Dosher

Print publication date: 2013

Print ISBN-13: 9780262019453

Published to MIT Press Scholarship Online: May 2014

DOI: 10.7551/mitpress/9780262019453.001.0001

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Three Examples from Visual Psychophysics

Three Examples from Visual Psychophysics

(p.19) 2 Three Examples from Visual Psychophysics
Visual Psychophysics

Zhong-Lin Lu

Barbara Dosher

The MIT Press

We introduce the fundamental components of visual psychophysics by dissecting three example experiments from scaling and sensitivity estimation: estimating perceived intensity of a light patch, measurement of contrast threshold, and measurement of a contrast sensitivity function. The basic elements of visual psychophysics include the selection of what to measure, the method of measurement, visual displays, response collection, and data analysis. This is designed to create a concrete overview that will be the basis of more detailed treatment of these issues later.

Keywords:   Visual psychophysics, Visual displays, Response collection, Analysing visual tests, Magnitude estimation, Threshold, Sensitivity, Psychometric function, Contrast sensitivity function

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