Photoresponses of a sensitive extraretinal photoreceptor in Aplysia.

  title={Photoresponses of a sensitive extraretinal photoreceptor in Aplysia.},
  author={Michael C Andresen and Angus M. Brown},
  journal={The Journal of physiology},
1. The light-evoked membrane current, photo-current, of an extraretinal photo-receptor, the ventral photoresponsive neurone (v.p.n.), in the abdominal ganglion of Aplysia californica, was studied using the voltage clamp method. Flashes and steps of monochromatic light were used as stimuli. 2. Flashes of light 100 msec in duration elicit slowly developing outward currents which peak at 5--10 sec and then return to dark levels within 30--60 sec. 3. The peak of the action spectrum of v.p.n. is at… CONTINUE READING