The paper shows that high‑gamma field activity and local spiking are distinct. The “hashy” signal often treated as a proxy for spiking is partly generated by other biophysics like dendritic and network‑level currents, not just summed spikes.
www.nature.com/articles/s41...
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A brain–machine interface is used in monkeys to investigate the biophysical underpinnings of cortical high gamma-band activity, a signal that is often studied in the context of many brain functions.