When1: 1902
When2: 1912
Who: Julius Bernstein [Bernstein, Julius]
What: biochemist
Where: Germany
works\ Investigations into the Thermodynamics of Bioelectrical Currents [1902]; Electrobiology [1912]
Detail: He lived 1839 to 1917 and measured nerve-impulse conduction speed [1902]. Neural ion concentrations change slightly during nerve impulses and cause nerve potential differences and action potentials {membrane theory} [1902 to 1912]. Local electric current flows between axon resting region and impulse region and causes depolarization {local circuit hypothesis}. This was idea of Ludimar Hermann.
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Date Modified: 2022.0224