A cone-triggered c-wave in the chicken ERG time integration characteristics.
The c-waves recorded from the cone-dominant retina of the chicken proved to be cone-triggered. The time course and time integration properties of this retinal potential were compared with those of the rod-triggered c-wave recorded in the frog under scotopic conditions. The results clearly demonstrate that there is no evidence for time integration in cone-triggered c-waves but that rod-triggered c-waves follow the Bunsen-Roscoe law over more than 2 log units. We propose that these time-related differences may be used in other species as a differentiation criterion between cone-triggered and rod-triggered c-waves.
D000818:Animals; D002645:Chickens / Q000502:physiology*; D003623:Dark Adaptation; D004596:Electroretinography; D010786:Photoreceptor Cells / Q000502:physiology*; D011896:Rana temporaria; D013997:Time Factors