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

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4 Author(s)
Djupsund, K. ; Dept. of Physiol. & Zool., Oulu Univ., Finland ; Kouvalainen, E. ; Jarvilehto, M. ; Weckstrom, M.

A new digital feedback application for the study of sensitivity characteristics of biological photoreceptors is presented. 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.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:40 ,  Issue: 2 )