Temporal-lobe Epilepsy: Harmonic and Anharmonic Periodicity in Microeletrode Voltage

01/16/2023
by   Francois A. Marshall, et al.
0

Temporal-lobe epilepsy in humans is often associated with widespread, synchronized neuron firing that co-occurs with traveling waves in local field potential. These traveling waves generate stochastic oscillations in a time series of microelectrode voltage, and previous work has deemed it informative for traveling-wave analysis to study the mean periodicity. This manuscript reveals that: a) mean voltage (i.e., traveling-wave periodicity) adequately explains the observed voltage periodicity only for a select few time intervals during seizure; and b) mean voltage has a 7 Hz cosine-series representation indicative of a nonlinear system response given alpha-rhythm input. The a) result implies that residual noise should be modelled explicitly, while b) motivates a departure from the conventional plane-wave modeling regime in source-localization efforts. The 7 Hz fundamental frequency is unsurprising given the relative transparency of the brain to 14 Hz alpha rhythms in neurophysiological diseases (14 Hz being a subharmonic frequency of the 7 Hz signal).

READ FULL TEXT

page 1

page 2

page 3

page 7

research
08/27/2022

Extra DoF of Near-Field Holographic MIMOCommunications Leveraging Evanescent Waves

In this letter, we consider transceivers with spatially-constrained ante...
research
12/08/2020

Plane Wave Elastography: A Frequency-Domain Ultrasound Shear Wave Elastography Approach

In this paper, we propose Plane Wave Elastography (PWE), a novel ultraso...
research
10/29/2018

A Statistical Simulation Method for Joint Time Series of Non-stationary Hourly Wave Parameters

Statistically simulated time series of wave parameters are required for ...
research
11/29/2016

SeDMiD for Confusion Detection: Uncovering Mind State from Time Series Brain Wave Data

Understanding how brain functions has been an intriguing topic for years...
research
01/24/2021

Factorization method with one plane wave: from model-driven and data-driven perspectives

The factorization method by Kirsch (1998) provides a necessary and suffi...
research
02/25/2023

Modulation instability gain and localized waves by modified Frenkel-Kontorova model of higher order nonlinearity

In this paper, modulation instability and nonlinear supratransmission ar...

Please sign up or login with your details

Forgot password? Click here to reset