Fig. 3: Spontaneous topographic network fluctuations travel as waves. | Nature Communications

Fig. 3: Spontaneous topographic network fluctuations travel as waves.

From: Spontaneous traveling waves naturally emerge from horizontal fiber time delays and travel through locally asynchronous-irregular states

Fig. 3

a Time series of simulated LFP activity from the topographically connected network in Fig. 2. Regional peaks and troughs moved coherently across the network as traveling waves. b 2D (space–time) FFT reveals a concentration of spatiotemporal energy along temporal (x-axis) and spatial (y-axis) frequencies reflecting the flow of activity across the network. c The presence of significant wave activity for a linear slice through the large-scale 2D network model. Significant (white) wave values were defined as estimated wavelengths that exceeded the 99th percentile of the spatially shuffled wavelength distribution (48.53% of network activity). d Cumulative distribution functions (CDFs) of the observed wavelengths (blue) and wavelengths after spatially shuffling the LFP pool locations (red, 99th percentile, red dashed line). e The randomly connected network had few points that were classified as traveling waves (1.12% of network activity). f Wavelength CDFs as in (d) for the randomly connected network and its shuffle.

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