Journal
NEUROIMAGE
Volume 251, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2022.118974
Keywords
Ageing; Beta rhythms; Cortical oscillations; MEG; Transient events; 1; f-like neural activity
Funding
- UK Biotechnology and Biological Sciences Research Council [BB/H008217/1]
- UK Medical Research Council
- University of Cambridge, UK
- Natural Sciences and Engineering Research Council of Canada
- Nova Scotia Department of Health and Wellness
- province of Nov a Scotia
- Dalhousie University
Ask authors/readers for more resources
This study integrates the periodic/aperiodic parameterization of neural power spectra and the transient events framework of oscillatory activity to analyze extracranial neurophysiological signals. The novel technique called PAPTO is applied to resting-state sensorimotor magnetoencephalography recordings. The results show that PAPTO is more sensitive to neocortical transient beta rhythms and captures more variance in the resting-state occurrence rate of beta events compared to conventional transient event detection algorithms.
Two techniques for analyzing human extracranial neurophysiological signals, namely the periodic/aperiodic parameterization of neural power spectra and the transient events framework of oscillatory activity, have recently emerged in the scientific literature. In this work, we integrate these two analysis perspectives to analyze extracranial neurophysiological signals as a series of transient rhythmic events disambiguated from the background aperiodic activity. We call this novel technique the periodic/aperiodic parametrization of transient oscillations (PAPTO). We demonstrate PAPTO by investigating resting-state sensorimotor magnetoencephalography recordings from the Cambridge Center for Ageing and Neuroscience cross-sectional study on healthy ageing ( n = 600, ages 18-88). We show that PAPTO is more sensitive to neocortical transient beta rhythms compared to more conventional transient event detection algorithms and captures more variance in the resting-state occurrence rate of beta events across participants. The improved sensitivity of PAPTO reveals that the beta occurrence rate almost doubles over the adult lifespan which we discuss in terms of thalamocortical beta generation in the somatosensory cortex and the age-related decline of sensory perception.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available