The rod receptor potential differs from other surface receptors in that it shows ______?
The rod receptor potential differs from the outer surface receptors in that it shows Hyperpolarization. In most sensory receptors: Arrival of stimulus - Ion channels are opened up allowing current to flow - depolarisation of the receptor. In photoreceptors: When the light strikes the outer segment, a cascade of reactions are initiated, that close some of the Na+ channels in the outer segment and results in hyperpolarisation. Ref: Guyton and Hall 13th edition Pgno: 650-651
Depolarization
Decreased negativity
Increased conductance of Sodium
Hyperpolarization
Nervous system