OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 6 — Jun. 1, 1962
  • pp: 697–699

Effect of Test-Flash Duration upon the Spectral Sensitivity of the Eye

MITSUO IKEDA and ROBERT M. BOYNTON  »View Author Affiliations


JOSA, Vol. 52, Issue 6, pp. 697-699 (1962)
http://dx.doi.org/10.1364/JOSA.52.000697


View Full Text Article

Acrobat PDF (368 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

When an increment threshold is measured as a function of the radiance of an adapting field, the so-called threshold-versus-radiance curve is obtained. Stiles has shown by the two-color threshold technique that this curve is not necessarily smooth but can have inflections whose nature depends upon the conditions. From this he reasoned that the mechanism responsible for the threshold changes from one to another with a change of adapting level, all conditions otherwise being kept constant. In the present paper it is shown that an analogous situation can occur with the threshold-versus-duration curve, which is sometime called a temporal summation curve. Instead of a change of adapting level, a change in the duration of the test stimulus is considered. An assumption is made that each mechanism has its own threshold-versus-duration curve, and that the over-all threshold-versus-duration curve is determined by their relative positions. As an example of the utility of this analysis, two sensitivity curves of the eye were obtained with test stimuli of two different durations, 100 and 12.5 msec. It is argued that they are different in shape because of a change in the contribution of the responsible mechanisms which can be interpreted in terms of the relative positioning of threshold-versus-duration curves.

Citation
MITSUO IKEDA and ROBERT M. BOYNTON, "Effect of Test-Flash Duration upon the Spectral Sensitivity of the Eye," J. Opt. Soc. Am. 52, 697-699 (1962)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-52-6-697


Sort:  Author  |  Journal  |  Reset

References

  1. H. deVries, J. Opt. Soc. Am. 36, 121 (1946).
  2. R. M. Boynton, G. L. Kandel, and J. W. Onley, J. Opt. Soc. Am. 49, 654 (1959).
  3. For the latest summary of Stiles' work, see W. S. Stiles, Proc. Natl. Acad. Sci. U. S. 45, 100 (1959).
  4. W. S. Stiles, Colloquio sobre problemas opticos de la vision (Union International de Physique Pure et Appliqué, Madrid, 1953), p. 69.
  5. Stiles has called these "t. v. i." curves (threshold vs intensity); we propose this change to accord with modern usage of radiance as the appropriate concept for fields having a finite area.
  6. A detailed description of the apparatus used to make these measurements will be published subsequently. A steady adapting field was used; the test flash was centered 30′ eccentric on the nasal retina and was circular with a 30′ diameter.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited