Synaptic transmission from rods to bipolar cells in the tiger salamander retina.

AUTOR(ES)

Wu, S M

RESUMO

Synaptic transmission between rods and depolarizing bipolar cells (DBC) was studied by using simultaneous recording techniques in the living retinal slice preparation. Current injection into the rod elicited a sign-inverting, sustained voltage change in the DBC. Voltage "tails" after the termination of a bright flash were observed in dark-adapted rods and DBC but not in cones. These simultaneously recorded voltage tails were used to isolate the rod input from the cone input and to study the input-output relation of the rod-DBC synapse. Within the voltage range between 0 and -10 mV from the rod dark potential (-39 +/- 1.2 mV), the input-output relation of the rod-DBC was approximately linear, with an estimated gain of about 3.7.

Documentos Relacionados

• Electrical coupling between rods and cones in the tiger salamander retina.
• Voltage gain of signal transfer from retinal rods to bipolar cells in the tiger salamander.
• Responses to light of solitary rod photoreceptors isolated from tiger salamander retina.
• Gated currents generate single spike activity in amacrine cells of the tiger salamander retina.
• Two types of glutamate receptors differentially excite amacrine cells in the tiger salamander retina.