Fig. 2: Spikes from groups of distant neurons contribute substantially to fast LFP oscillations. | Nature Communications

Fig. 2: Spikes from groups of distant neurons contribute substantially to fast LFP oscillations.

From: A consensus statement on detection of hippocampal sharp wave ripples and differentiation from other fast oscillations

Fig. 2: Spikes from groups of distant neurons contribute substantially to fast LFP oscillations.The alternative text for this image may have been generated using AI.

A Histograms of extracellular spikes (top right) extracellular voltages along the CA1 stratum oriens–stratum radiatum axis in a rhythmically bursting population with ~6% of the population firing in each 10 ms interval. Spike bursts recur periodically at 150 Hz and have a Gaussian shape. The locations of neurons that spike during one 6.7 ms ripple period are indicated by triangles in a top-down view of the pyramidal layer (left), with colors indicating the 50µm-wide ring from which the spikes originate. Voltage traces are colored correspondingly, with contributions from each ring of cells adding cumulatively from the outside in. The colors in the histograms and current traces correspond to the cumulative contribution of the neurons in the ring. B Averaged power spectra of the CA1 stratum pyramidale traces from each individual ring. The insets indicate the proportions of the total voltage power at 150 Hz generated by each ring- or disk-shaped subpopulation (i.e., the peak values of the power spectra, normalized by the power at 150 Hz in the full population). Reproduced from ref. 32, CC BY-NC-SA 3.0 (https://creativecommons.org/licenses/by-nc-sa/3.0/).

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