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A. Example recording of Spikeling membrane potential (top) and current (bottom) during manual manipulations of the input current dial (4) to depolarise the neuron (left), following the addition of a noise current (dial 3, right). B. Example light responses in modes 1–3 (left to right, toggled by the button) to manual PD stimulation with a torch. The grey horizontal lines indicate Itotal = 0. PD, photoiode.
