Current-voltage relations during illumination: photoreceptor membrane of a barnacle.
In voltage clamped photoreceptor cells of the barnacle, light-induced membrane current varied nonlinearly with membrane potential and changed sign at about + 27 millivolts (reversal potential) independently of light intensity. Instantaneous current-voltage relations were linear and intersected the voltage axis at the reversal potential. Illumination increased membrane conductance that was dependent on membrane potential, light intensity, and time.
D000818:Animals; D002463:Cell Membrane Permeability; D003445:Crustacea; D008027:Light; D008564:Membrane Potentials; D011984:Sensory Receptor Cells; D012964:Sodium
D012964:Sodium