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The Effect of Low Frequency and Direct Current Stimulation on The Kindling Phenomenon in Rats

Published online by Cambridge University Press:  18 September 2015

John Gaito
John Gaito*
Affiliation:
Department of Psychology, York University, Downsview, Ontario, Canada
*
Department of Psychology,, York University, 4700 Keele Street, Downsview, Ontario, M3J 1P3, Canada
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An experiment was conducted to evaluate the effect of 1-Hz or direct current brain stimulation on kindling behavior induced by 60-Hz sine wave stimulation. The effective threshold intensity to elicit a convulsion was determined on four separate occasions with 5 days of daily trials between determinations. On each day one group of experimental rats was stimulated with 1-Hz sine wave current before and after stimulation with 60-Hz sine wave current (1-60-1 group). Another group received direct current stimulation and 60-Hz current (D-60-D group). A third group received only 60-Hz stimulation. Suppression of kindling behavior usually induced by the 60-Hz stimulation occurred with 1-Hz stimulation; the mean threshold value increased on each successive determination. Suppression was most pronounced for the direct current group; it appeared after a single trial and persisted for 32 days after the last threshold determination. In contrast, most of the rats in the 1-60-1 group had recovered from the suppression after the 32 day period of nonstimulation. A second phase of the experiment indicated that the increase in threshold values for the D-60-D group occurred after a single DC stimulation. These results are consistent with the hypothesis generated by previous research that suppression following 1-Hz stimulation is not due to tissue damage.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 8 , Issue 3 , August 1981 , pp. 249 - 253
Copyright
Copyright © Canadian Neurological Sciences Federation 1981

References

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