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The electric potential on the surface of the Lepidium sativum L. root apex was recorded by means of six non-polarizable electrodes. Nonevoked fluctuations of the potential with amplitudes below 0.1 mV were observed. The fluctuations could be reversibly inhibited either by ether vapor or by anoxia caused by N2. They did not occur in killed roots.(More)
Extracellular recordings of electrical potential in leaves of different species by means of band-pass amplifiers showed the occurrence of fast, small changes (spikes) with an amplitude below 1 mV. Local illumination of leaves induced temporal patterns of spikes outside the illuminated region. The light-induced patterns recorded by a given electrode in a(More)
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