Rod temporal channels

Robert F. Hess, Sarah J. Waugh, Knut Nordby

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Mechanisms underlying rod temporal contrast sensitivity have been considered in terms of a fast retinal signal predominating at mesopic levels and a slower retinal signal predominating at scotopic levels. Here we use a small signal masking method, which has previously been used to delineate the cone-mediated cortical temporal channels, to investigate their rod-mediated cortical counterparts. The results suggest that there are three different rod-mediated cortical temporal channels, one which is lowpass and two which are bandpass. These mechanisms co-exist at all light levels and their relative sensitivity depend on the stimulus spatio-temporal frequency.

Original languageEnglish
Pages (from-to)613-619
Number of pages7
JournalVision Research
Issue number4
Publication statusPublished - 1 Feb 1996
Externally publishedYes


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