Unconditioned Response to Electric Shock: Mechanism in Planarians

Science  11 Feb 1966:
Vol. 151, Issue 3711, pp. 707-709
DOI: 10.1126/science.151.3711.707


Some implications of a mathematical theory relating neuronal geometry to the parameters of excitation in unconditioned response of planarians to electric shock are experimentally verified. The regions and patterns of primary neural excitation depend on the relation between the distribution of neural sizes and the wave form of the electric stimulus.