A digital feedback controller application: a light response control system to reveal photoreceptor adaptation.

Djupsund, K; Kouvalainen, E; Järvilehto, M; Weckström, M · IEEE Trans Biomed Eng · 1993

basic_science · Level V

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Abstract

We present a new digital feedback application for the study of sensitivity characteristics of biological photoreceptors. The voltage response of a cell is controlled by feeding back to the stimulating LED--via the controller--the recorded membrane voltage. The light intensity changes represent the change in the sensitivity of the photoreceptors, revealing the time course of adaptation.

Medical subject headings