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Biophysical Journal 33: 323-351 (1981)
© 1981 the Biophysical Society

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Relationship between presynaptic calcium current and postsynaptic potential in squid giant synapse.

R Llinás, I Z Steinberg and K Walton

ABSTRACT

The relationship between calcium current and transmitter release was studied in squid giant synapse. It was found that the voltage-dependent calcium current triggers the release of synaptic transmitter in direct proportion to its magnitude and duration. Transmitter release occurs with a delay of approximately 200 mus after the influx of calcium. A model is presented which describes these relations formally.




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