| Figure 1. |
 |
| FIG. 1. A diagram illustrating
some of the most important potential sites of action of barbiturates at
a hypothetical central synapse. (1) voltage-gated calcium channels in
the presynaptic nerve terminal, (2) the potsynaptic glutamate receptor,
(3) the postsynaptic GABAA receptor, (4) voltage-gated sodium channels
in the postsynaptic neuron. |
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