(A) A single-trial membrane potential response to a grating presented at
the preferred orientation from macaque monkey V1.
(B) A model of that trial’s response.
(C) The relationship between the model membrane potential and
conductances in the simulations. The conductance forthe intrinsic channel (red)
declined with depolarization although synaptic conductance increased with
depolarization (black).
(D) Membrane potential traces for a model with the intrinsic channel
(red) and without the intrinsic conductance (blue) for the same synaptic
input.
(E) Average Vm for the model with the voltage-gated conductance is
plotted relative to the Vm for the model without the voltage-gated conductance
for the example cell. The green line indicates a power law fit between Vm in the
two models.
(F) The distribution of the fit exponent across neurons in our
population of primate neurons.