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 language | English |
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Pages (from-to) | 1773-1782 |
Number of pages | 10 |
Journal | Vision Research |
Volume | 21 |
Issue number | 12 |
DOIs | |
Publication status | Published - 1981 |
Externally published | Yes |