A brief history of time (constants).

  title={A brief history of time (constants).},
  author={Christof Koch and Moshe Rapp and Idan Segev},
  journal={Cerebral cortex},
  volume={6 2},
That the cerebral cortex processes information at prodigious speeds cannot be doubted. Yet the passive time constant, tau(m), of neurons, often thought of as a measure of the neuron's "response time' to synaptic input, is relatively long. In the 1950s, tau(m) was estimated to be only a few milliseconds for mammalian central neurons; with improvement in recording techniques, its estimated value grew over the years and it now stands near 20-100 msec. However, as we will argue here, the functional… CONTINUE READING