<i>I</i><sub>h</sub> mutant photoreceptors undergo rhythmic depolarization without light stimulation.
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Abstract
<p>(<b>A</b>) Intracellular recording traces of wild-type and <i>I</i><sub><i>h</i></sub> mutant photoreceptors. For intracellular recording traces, event markers represent 5-s orange light pulses, and scale bars are 5 mV. Measurements of the amplitude (Am), frequency (Fr), rise time (R<sub>t</sub>), and decay time (D<sub>t</sub>) of rhythmic depolarization are provided at the top. (<b>B</b>) The fraction of photoreceptors (R-cells) that exhibit oscillation phenotype. The numbers of photoreceptors recorded for each genotype are listed. (<b>C</b>) Measurement of the amplitude of light-induced depolarization (middle) and the time (t<sub>3/4</sub>) required for a 3/4 recovery from the responses upon stimulation cessation (right). <i>n</i> = 10.</p
