Conference poster
1/f and Attention: Examining the Relationship Between Attention and Aperiodic Neural Activity in Resting-State EEG in Ageing
Australasian Neuroscience Society Annual Scientific Meeting, 40th (Melbourne, Australia, 05-Dec-2022–07-Dec-2022)
2022
Abstract
The ability to sustain attention, thus suppressing or ignoring task-irrelevant stimuli, involves the synchronous firing of neurons in task-relevant networks (1). The EEG power spectrum exhibits a 1/ƒ -like distribution which accounts for aperiodic activity that is thought to be functionally relevant to cognition (2), with recent studies postulating that age-related flattening of the spectrum (decrease in 1/ƒ slope) is linked to declines in cognitive performance (3-5). Here, we examined the association between 1/ƒ activity and sustained attention performance in older adult subjects to illuminate the utility of the spectral slope as a biomarker of attentional decline. 32-channel scalp EEG recordings (sampling rate=1024 Hz) of 86 healthy older adults (50-85 years) were collected in an eyes-closed resting-state condition. We used spectral parameterisation to reveal the aperiodic components (exponent and offset) from the frontal and parietal electrodes, which were selected apriori. Sustained attention was measured using the CANTAB Rapid Visual Information Processing (RVP) task (6). Multiple regression (bootstrapped; 2000 samples, 95% BCa CI) revealed that after controlling for age and gender, frontal aperiodic activity was significantly associated with attentional performance (p = 0.05; R-squared = 0.210). The same association was seen for parietal aperiodic activity (p = 0.03; R-squared = 0.217). These findings indicate that frontal and parietal aperiodic activity may be a biomarker of sustained attention abilities in older adults.
Details
- Title
- 1/f and Attention: Examining the Relationship Between Attention and Aperiodic Neural Activity in Resting-State EEG in Ageing
- Authors
- Alicia Campbell (Author) - University of the Sunshine Coast, Queensland, Thompson InstituteToomas Erik Anijaerv (Author) - University of the Sunshine Coast, Queensland, Thompson InstituteJacob M Levenstein (Author) - University of the Sunshine Coast, Queensland, Thompson InstituteDaniel Hermens (Author) - University of the Sunshine Coast, Queensland, Thompson InstituteJim Lagopoulos (Author) - University of the Sunshine Coast, Queensland, Thompson InstituteSophie Andrews (Author) - University of the Sunshine Coast, Queensland, Thompson Institute
- Conference details
- Australasian Neuroscience Society Annual Scientific Meeting, 40th (Melbourne, Australia, 05-Dec-2022–07-Dec-2022)
- Date published
- 2022
- Organisation Unit
- Thompson Institute
- Language
- English
- Record Identifier
- 99719197802621
- Output Type
- Conference poster
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