Abstract

Light flashes stimulate one eye by Maxwellian view. The change of pupil diameter of the contralateral eye is the measured response. The effects of stimulus magnitude, stimulus field size, and subject selection are examined. The stimulus is adjusted until the response is some predetermined (criterion) amount. Thus, even though the system is nonlinear, the different possible stimuli which yield this criterion response are equivalent. We show that to utilize the criterion response technique optimally it is necessary to (1) use large-field stimulation, (2) obtain complete curves of response magnitude vs retinal illuminances on potential subjects, (3) select subjects having steep slopes on these curves, (4) select the value of the criterion response to be centered in the steeply-sloped portion of the curve. Failure to observe these rules may result in data of little value.

© 1968 Optical Society of America

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Corrections

John G. Webster, Gerald H. Cohen, and Robert M. Boynton, "Errata: Optimizing the Use of the Criterion Response for the Pupil Light Reflex," J. Opt. Soc. Am. 58, 1164_3-1164 (1968)
http://proxy.osapublishing.org/josa/abstract.cfm?uri=josa-58-8-1164_3

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