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| The Effect of Tetrodotoxin, Veratridine and Tetraethylammonium Chloride on the Receptor Potential o f the Crayfish Photoreceptor Cell  | | | Abstract
| S t i e v e a n d T . Ma l i n o w s k a In stitu t für Neurobiologie der K em forschungsanlage Jülich GmbH. The effect of three drugs on the receptor potential (ReP) o f the crayfish retina measured with external electrodes was tested. 1. Tetrodotoxin (TTX) (1 • 1CT6 g/ml and 1 • 10-5 g/ml) showed only slight effects on the receptor potential (Table I and II). 2. Veratridine (VERA) (1 • 10-5 g/ml) showed only small effects o f the same type as TT X but a little stronger on the receptor potential which became obvious especially in the period after washing out the drug (Table III). 3. Tetraethylammonium (TEA) (5 mWl) caused a decrease o f the height o f the receptor potential w ithout influencing the repolarizing phase (decrease-time tz) markedly (Table IV). The results can be interpreted as follows: 1. The permeability increase for sodium, calcium and magnesium, which causes the rising phase | | |
Reference
| (Z. Naturforsch. 28c, 149—156 [1973]; received December 12 1972) | | |
Published
| 1973 | | |
Keywords
| Receptor potential, tetrodotoxine, veratridine, TEA, photoreceptor cell, Crustacea | | |
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| default:Reihe_C/28/ZNC-1973-28c-0149.pdf | | | Identifier
| ZNC-1973-28c-0149 | | | Volume
| 28 | |
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