Test-retest reliability of spectral parameterization by 1/f characterization using SpecParam

Author:

McKeown Daniel J12ORCID,Finley Anna J3,Kelley Nicholas J4,Cavanagh James F5,Keage Hannah A D6,Baumann Oliver12,Schinazi Victor R12,Moustafa Ahmed A12,Angus Douglas J12

Affiliation:

1. The Mind Space Laboratory , Department of Psychology, Faculty of Society and Design, , Gold Coast, QLD 4229 , Australia

2. Bond University , Department of Psychology, Faculty of Society and Design, , Gold Coast, QLD 4229 , Australia

3. Institute on Aging, University of Wisconsin-Madison , Madison, WI 53706 , United States

4. School of Psychology, University of Southampton , Southampton SO17 1BJ , United Kingdom

5. Department of Psychology, University of New Mexico , Albuquerque, NM 87106 , United States

6. School of Psychology, University of South Australia , Adelaide, SA 5001 , Australia

Abstract

Abstract SpecParam (formally known as FOOOF) allows for the refined measurements of electroencephalography periodic and aperiodic activity, and potentially provides a non-invasive measurement of excitation: inhibition balance. However, little is known about the psychometric properties of this technique. This is integral for understanding the usefulness of SpecParam as a tool to determine differences in measurements of cognitive function, and electroencephalography activity. We used intraclass correlation coefficients to examine the test-retest reliability of parameterized activity across three sessions (90 minutes apart and 30 days later) in 49 healthy young adults at rest with eyes open, eyes closed, and during three eyes closed cognitive tasks including subtraction (Math), music recall (Music), and episodic memory (Memory). Intraclass correlation coefficients were good for the aperiodic exponent and offset (intraclass correlation coefficients > 0.70) and parameterized periodic activity (intraclass correlation coefficients > 0.66 for alpha and beta power, central frequency, and bandwidth) across conditions. Across all three sessions, SpecParam performed poorly in eyes open (40% of participants had poor fits over non-central sites) and had poor test-retest reliability for parameterized periodic activity. SpecParam mostly provides reliable metrics of individual differences in parameterized neural activity. More work is needed to understand the suitability of eyes open resting data for parameterization using SpecParam.

Publisher

Oxford University Press (OUP)

Subject

Cellular and Molecular Neuroscience,Cognitive Neuroscience

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