Continual expression of coexistent oscillation frequencies.

Abstract

<p>Shown are the Fourier transform (<b>a</b>), wavelet transform (<b>b</b>) and raster diagram of cell firing (<b>c</b>) from the excitatory population of the target network (the fast network). The inset in <b>a</b> shows the connectivity scheme from the slow to the fast network (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0100899#pone.0100899.s001" target="_blank">Fig. S1c</a>8), in which the iE connection had . The fast network co-expressed its own fast base frequency (32.4 Hz) and the base frequency of the slow network (20.4 Hz and corresponding harmonic and subharmonic frequencies). The power (amplitude) of both frequencies did not vary strongly over time.</p