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Silicon synaptic conductances.
Journal article

Silicon synaptic conductances.

  • Rasche C Institut für Neuroinformatik (ETHZ/UNIZ), Zürich, Switzerland. chris@ini.phys.ethz.ch
  • Douglas RJ
  • 1999-09-11
Published in:
  • Journal of computational neuroscience. - 1999
Action Potentials
Computers, Analog
Electric Conductivity
Excitatory Postsynaptic Potentials
Neural Networks, Computer
Neurons
Receptors, AMPA
Receptors, N-Methyl-D-Aspartate
Silicon
Synapses
Transistors, Electronic
English We have developed compact analog integrated circuits that simulate two synaptic excitatory conductances. A four-transistor circuit captures the dynamics of an excitatory postsynaptic current caused by a real AMPA conductance. A six-transistor circuit simulates the effects of a real voltage-dependent NMDA conductance. The postsynaptic current dynamics are modeled by a current mirror integrator with adjustable gain. The voltage dependence of the silicon NMDA conductance is realized by a differential pair. We show the operation of these silicon synaptic conductances and their integration with the silicon neuron (Mahowald and Douglas, 1991).
Language
  • English
Open access status
closed
Identifiers
Persistent URL
https://sonar.ch/global/documents/142421
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