Influence of Direct Current Stimulation On the Ion-Induced Sensitivity Changes of the Electroreceptors (Small Pit Organs) of the Brown Bullhead, Ictalurus Nebulosus LeS
- 1 January 1974
- journal article
- research article
- Published by Brill in Netherlands Journal of Zoology
- Vol. 25 (4) , 389-397
- https://doi.org/10.1163/002829675x00029
Abstract
1) The a.c. sensitivity of the electroreceptors of the brown bullhead, Ictalurus nebu- losus LeS., could be controlled by applying direct current stimuli with current densities of 2 × 10-7 to 2 × 10-5 A/cm2. 2) These effects bear a tonic character and may last up to 15 minutes. 3) Increases or decreases in the electroreceptor's sensitivity caused by alterations in the ionic contents of the animals environment, could also be compensated by applying direct current stimuli. 4) The implantation of electrodes in intact animals was strongly improved by the use of cocoa butter for electrical insulation and mechanical fixation. 5) Implications of the voltage controlled sensitivity of the electroreceptors are discussed.Keywords
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