PubMed ID: 37961603
Author(s): Chen Q, Ingram NT, Baudin J, Angueyra JM, Sinha R, Rieke F. Light-adaptation clamp: a tool to predictably manipulate photoreceptor light responses. bioRxiv. 2023 Oct 23:2023.10.20.563304. doi: 10.1101/2023.10.20.563304. Preprint. PMID 37961603
Journal: Bio Rxiv : The Preprint Server For Biology, Oct 2023
Computation in neural circuits relies on judicious use of nonlinear circuit components. In many cases, multiple nonlinear components work collectively to control circuit outputs. Separating the contributions of these different components is difficult, and this hampers our understanding of the mechanistic basis of many important computations. Here, we introduce a tool that permits the design of light stimuli that predictably alter rod and cone phototransduction currents – including the compensation for nonlinear properties such as light adaptation. This tool, based on well-established models for the rod and cone phototransduction cascade, permits the separation of nonlinearities in phototransduction from those in downstream circuits. This will allow, for example, direct tests of the role of photoreceptor adaptation in downstream visual signals or in perception.