Effects of External Electric Fields on Light Transmittance in Isolated Crayfish Nerves

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Acute effects of a pulsed external electric field (PEEF) at 20 V/cm and a d.c. EEF at 90 V/cm on light transmittance in an isolated compound crayfish nerve was measured. In a third series, the nerve was pre-treated with the Na+ channel blocker tetrodotoxin (TTX). A PEEF produced an irreversible increase in the variation of light transmittance in normal nerves but a reversible increase in TTX treated nerves. This data was statistically insignificant. The d.c. EEFs produced a reversible and statistically significant enhancement of variation in light transmittance in both untreated and TTX-treated nerves. The findings may be due to … continued below

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iv, 36 leaves : ill.

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Northcutt, Brian S. W. December 1995.

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  • Northcutt, Brian S. W.

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Acute effects of a pulsed external electric field (PEEF) at 20 V/cm and a d.c. EEF at 90 V/cm on light
transmittance in an isolated compound crayfish nerve was measured. In a third series, the nerve was pre-treated with the Na+ channel blocker tetrodotoxin (TTX). A PEEF produced an irreversible increase in the variation of light transmittance in normal nerves but a reversible increase in TTX treated nerves. This data was statistically insignificant. The d.c. EEFs produced a reversible and statistically significant enhancement of variation in light transmittance in both untreated and TTX-treated nerves. The
findings may be due to either (1) an alteration in the ion/fluid flux within the nerve or (2) a physical alteration of protein molecules in the membranes.

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iv, 36 leaves : ill.

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  • December 1995

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  • March 26, 2014, 9:30 a.m.

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  • July 24, 2014, 8:26 a.m.

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Northcutt, Brian S. W. Effects of External Electric Fields on Light Transmittance in Isolated Crayfish Nerves, thesis, December 1995; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc279205/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .

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