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 (ĭ-lĕk′trŏt′n-əs, ē′lĕk-)
Alteration in excitability and conductivity of a nerve or muscle during the passage of an electric current through it.

e·lec′tro·ton′ic (-trə-tŏn′ĭk) adj.
References in periodicals archive ?
the distance at which the amplitude of the electrotonic potential decreases by 2.
ye]) the fiber orientation upon the size of the current electrode, electrotonic anisotropy and the distance between the current electrode and the electrotonic potential recording site, we assessed the relation between the measured and actual values of electrotonic anisotropy and calculated the possible errors in the evaluations of the actual values of the space constants of electrotonic decay, when myocardium is modeling by two-dimensional anisotropic medium [11].
The electrotonic potential produced by injecting a hyperpolarizing current pulse (100 ms, 80 nA) was recorded while the distance between the current and recording electrodes, along the ventral longitudinal midline of the heart, was varied.