Brain waves are a repetition of a pause and an activity

TL;DR

This paper introduces new indices, voltage subthreshold wave $ au$ and wave burst, to analyze brain activity in LFP/EEG signals, revealing their correlation with vigilance and anesthetic effects.

Contribution

It presents original indices for brain wave analysis, linking wave patterns to vigilance states and anesthetic doses, advancing understanding of brain rhythm mechanisms.

Findings

$ au$ and burst occupy 30% and 70% of LFP in natural state.

Threshold and Abst decrease with increased sample frequency.

Sevoflurane dose correlates linearly with $ au$ and $N au$ decreases.

Abstract

Brain waves still cannot reliably distinguish between awake and asleep states. Here, I present new original indices, voltage subthreshold wave $\tau$ and abovethreshold wave burst, for advanced LFP/EEG readings. Assuming that $\tau$ is a microwave that fluctuates every sample such as the equipotential, the total number of $\tau$ ($N\tau$) is inferred to be the maximum, and the amplitude of burst (Abst) is inferred to be the minimum. In fact, they invariably had a mean $\tau$ duration ($M\tau$) of 2-3 sample intervals in any case. In addition, $\tau$ and burst exhibited self-similarity for sample frequency while occupying approximately 30% and 70% of LFP in the natural state, respectively. Its threshold and Abst were correlated with the vigilance state and decreased to 70% by doubling the sample frequency. The dose of sevoflurane, which inhibits and synchronizes neural activity, was linearly correlated with decreases in the threshold and $N\tau$. Thus, $\tau$ could reflect the uncertainty of the membrane potential. I propose that $\tau$ and burst represent a pause and an activity such as the rhythm of the brain.