Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

An Automatic-Recording Visual Adaptometer

Not Accessible

Your library or personal account may give you access

Abstract

A visual adaptometer which employs a direct mechanical linkage between brightness-control mechanism and recorder is described. Brightness of the test field, which is controlled by the subject, is not uniform, one-half being darker than the other by a small fixed amount. The subject’s visual threshold is approximated by requiring him to adjust the brightness of the split field so that he is able to see only the brighter portion of it. The device may be operated by the subject with little or no assistance from the experimenter and yields a nearly continuous plot of absolute visual threshold as a function of time.

© 1954 Optical Society of America

Full Article  |  PDF Article
More Like This
Automatic Apparatus for Stimulus Presentation and Recording in Visual Threshold Experiments*†

H. Richard Blackwell, Benjamin S. Pritchard, and James G. Ohmart
J. Opt. Soc. Am. 44(4) 322-326 (1954)

A Portable Visual Adaptometer

George Wald
J. Opt. Soc. Am. 31(3) 235-238 (1941)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved