The involvement of rod photoreceptors in dark adaptation

T. D. Lamb*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)

Abstract

From analysis of previously reported scotopic dark adaptation curves (Pugh, 1975b), evidence has been found for the existence following a bleach of three separate components in the decline of the "equivalent background intensity", with decay time constants of about 5 sec, 100 sec and 7 min. The results are consistent with the idea that the equivalent background is caused by photon-like events in the rods as a result of intermediates produced by the bleaching light, and a model of the removal of these intermediates provides a good description of the psychophysical results. The ideas are consistent with the recent demonstration of an increased rate of occurrence of quantal events in rods following a bleach (Lamb, 1980).

Original languageEnglish
Pages (from-to)1773-1782
Number of pages10
JournalVision Research
Volume21
Issue number12
DOIs
Publication statusPublished - 1981
Externally publishedYes

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