The Role of Ongoing Dendritic Oscillations in Single-Neuron Dynamics
Figure 4
Phase-locking of two Morris-Lecar type II oscillators.
The oscillators (described in Methods) are coupled via a passive cable of electrotonic length ,
ms. A: Voltage trajectory (blue) and phase response function (black) of the Morris-Lecar type II oscillator, period
ms. B: Shape of
for
(solid curve),
(dashed curve) and
(dash-dotted curve). The functions have been rescaled and aligned in order to show the different degrees of skewness. C: Bifurcation diagram showing the stable (solid black line) and unstable (dashed red line) phase-locked solutions as a function of
. Cross marks give the stable phase difference determined with numerical simulations using
S cm
with
ms, and
mV. D: The middle two panels show simulations of the phase difference dynamics (red curves) for
(top) and
(bottom) with
S cm
. Space-time plots of the membrane potential along the dendritic cable cable are plotted for the first 200 ms (left) and for the final 200 ms (right) of the two simulations.