The altered electrical state or condition of nerve tissue in the region near the anode during electrical stimulation; the physiological changes occurring in tissue proximal to the positive electrode.
From an- (anode) plus electrotonus (from elektron plus tonos, 'tension'). An early neurophysiology term describing electrical effects on nerves.
Anelectrotonus and catelectrotonus were key discoveries showing that electricity's effects on nerves were directional and asymmetrical—the anode side behaved differently from the cathode side, a finding that helped early neuroscientists map nerve function.
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