The d-wave of the electroretinogram of perch originates in the cone pathway

during light offset, a positive potential called the d-wave of the electroretinogram (ERG) in cone-rich retinas (B r o w n, 1968). The d-wave is believed to be generated from cone-driven secondary retinal cells, such as the OFF bipolar cells (S t o c k t o n and S l a u g h t e r, 1989; N a a r e n d o r p and W i l l i a m s, 1999). It has been suggested that in zebrafish, during the transition from light to dark adaptation, the b-wave represents a function of both rod and cone systems (R e n and L i, 2004). The positive d-wave, on the other hand, represents mainly, if not exclusively, cone functions (A n d j u s, 2001; R e n and L i, 2004). THE D–WAVE OF THE ELECTRORETINOGRAM OF PERCH ORIGINATES IN THE CONE PATHWAY. Milena Milosevic1, A. Bajic2, and Z. Gacic1. 1Center for Multidisciplinary Studies, University of Belgrade, 11000 Belgrade, Serbia, 2Faculty of Biology, University of Belgrade, 11000 Belgrade, Serbia.