title: A digital feedback controller application: a light response control system to reveal photoreceptor adaptation.
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.
authors.forename: K
authors.initials: K
authors.lastname: Djupsund
authors.forename: E
authors.initials: E
authors.lastname: Kouvalainen
authors.forename: M
authors.initials: M
authors.lastname: Järvilehto
authors.forename: M
authors.initials: M
authors.lastname: Weckström
mesh_terms: D000222:Adaptation, Physiological; D000465:Algorithms; D000818:Animals; D004175:Diptera; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D005246:Feedback; D010786:Photoreceptor Cells / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted