Evaluating Aperiodic and Periodic Neural Activity as Markers of Listening Effort in Speech Perception DOI
Sarah J. Woods, Jack Silcox, Brennan R. Payne

и другие.

Auditory Perception & Cognition, Год журнала: 2024, Номер 7(3), С. 203 - 218

Опубликована: Июль 2, 2024

Listening effort (LE) is critical to understanding speech perception in acoustically challenging environments. Electroencephalograpy (EEG) alpha power has emerged as a potential neural correlate of LE. However, the magnitude and direction relationship between acoustic challenge been inconsistent literature. In current study, secondary analysis previously collected dates, we examine broadband 1/f-like exponent offset EEG spectrum measures aperiodic activity during effortful influence this on reliable estimation periodic (i.e. alpha) activity. was continuously recorded sentence listening (1–40 Hz) computed for each participant quiet noise trials separately. Using specparam algorithm, decomposed into both components found that sensitive background additionally impacted measurement noise-induced changes oscillations. We discuss implications these results LE processing literatures.

Язык: Английский

Modulation of aperiodic EEG activity provides sensitive index of cognitive state changes during working memory task DOI Creative Commons
Tisa Frelih, Andraž Matkovič, Tjaša Mlinarič

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Май 14, 2024

To better understand cognitive processes, it is valuable to consider both periodic (oscillatory) and aperiodic electrophysiological brain activity. In this study, we aim clarify how the components respectively reflect processes involved in working memory. Fifty-seven participants performed an n-back task while their activity was recorded using EEG. The analysis of EEG spectrum during performance indicates that activities exhibit distinct task-related spatiotemporal dynamics are closely related demands. results suggest a substantial portion changes often attributed theta oscillations memory tasks may be influenced by shifts spectral slope This finding modulation activity, associated with control could provide more sensitive index state than previously recognised. further confirm our findings, also used these methods item-recognition task, which showed similar patterns These observations challenge conventional understanding low-frequency processing raise concerns about routine practice baseline correction time-frequency analysis, as obscure significant modulations continuous tasks. Consequently, inclusion fundamental component likely critical for accurate representation neural basis cognition.

Язык: Английский

Процитировано

3
Linking the multiple-demand cognitive control system to human electrophysiological activity DOI Creative Commons
Runhao Lu

Neuropsychologia, Год журнала: 2025, Номер unknown, С. 109096 - 109096

Опубликована: Фев. 1, 2025

The multiple-demand (MD) network serves as a core system for domain-general cognitive control, with robust activation increased demand across diverse tasks. While fMRI studies have characterised the MD network's role in demand, linking these findings to electrophysiological activity remains critical challenge. This article discusses potential of oscillatory and aperiodic neural bridge this gap. Although recent meta-analyses highlight mid-frontal theta power marker task its localised spatial distribution, limited cross-task generalisability, confounds from components limit ability fully represent network. In contrast, activity, particularly broadband power, has emerged strong candidate indexing due decoding performance generalisability response demands, overlap regions. Aperiodic may reflect fundamental properties, such spiking rates excitation/inhibition (E/I) balance, is scale-free exists modalities, positioning it promising mechanism underpinning control that links Meanwhile, multiplexed low-frequency oscillations (e.g., delta theta) implement inter-regional synchronisation within network, enabling large-scale coordination between subregions supports control. Together, proposes hypothetical framework responses: potentially reflecting population-level support regions, while synchronisations mediate connectivity

Язык: Английский

Процитировано

0
Task-induced 1/f slope modulation as a paradigm-independent marker of cognitive control in multiple sclerosis DOI Creative Commons
Fahimeh Akbarian, Máté Gyurkovics, Marie D’hooghe

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Abstract Multiple sclerosis (MS) is a chronic neuro-degenerative and inflammatory disease causing motor, sensory, cognitive deficits, including impairments in working memory attention. These deficits may arise from an imbalance between excitatory inhibitory neural activity due to synaptic loss. Recent studies suggest that the aperiodic 1/f slope, marker reflecting excitation/inhibition (E/I) balance, could serve as biomarker for control. This study examines slope modulation during tasks people with MS healthy controls investigate its potential paradigm-independent of We analyzed Magnetoencephalography (MEG) data collected 126 participants: 44 (HCs), 61 not treated benzodiazepines (pwMS(BZDn)), 21 pwMS (pwMS(BZDp)). Participants performed auditory oddball task visual-verbal n-back task. After preprocessing MEG data, we used FOOOF algorithm extract power spectral densities across 42 cortical parcels. Through this analysis, observed significant increases following stimulus onset all types, more pronounced non-standard stimuli (targets distractors), especially within temporal cortex. Group comparisons revealed less pwMS(BZDp) compared HCs distractor stimuli, indicating impaired control linked benzodiazepine treatment. Positive correlations were pwMS(BZDn), highlighting consistent, mechanism. Taken together, these findings demonstrate sensitive, E/I balance. Reduced response distractors among highlights benzodiazepine-related disruptions processes underlying deficits. underscore value measures deepen understanding potentially guide therapeutic interventions targeting MS. Highlights The was significantly modulated types multiple (pwMS). (distractor target) than standard stimuli. Healthy showed larger (suggesting inhibition) trials target while, pattern reversed pwMS. correlated visuospatial memory, measured by BVMT-R, benzodiazepines. further previously described strong (r=0.4-0.6, p<0.001) paradigms.

Язык: Английский

Процитировано

0
Resting-State EEG Correlates of Sustained Attention in Healthy Ageing: Cross-Sectional Findings from the LEISURE Study DOI Creative Commons
Alicia J Campbell, Toomas Erik Anijärv,

Thomas Pace

и другие.

Neurobiology of Aging, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

1
Modulation of aperiodic EEG activity provides sensitive index of cognitive state changes during working memory task DOI Open Access
Tisa Frelih, Andraž Matkovič, Tjaša Mlinarič

и другие.

Опубликована: Окт. 21, 2024

To better understand cognitive processes, it is essential to examine the interplay between periodic (oscillatory) and aperiodic electrophysiological brain activity. In this study, we aim clarify how components respectively reflect processes involved in working memory. Fiftyseven participants performed an n-back task while their activity was recorded using EEG. The analysis of both EEG spectrum during performance indicate that activities exhibit distinct taskrelated spatiotemporal dynamics are closely related demands. results substantial changes traditionally attributed theta oscillations memory tasks are, fact, due shifts spectral slope This suggests modulation associated with control may provide a more sensitive index state than previously recognised. validate our findings, also used these methods another task, which showed similar patterns Our findings challenge conventional understanding processing question routine practice baseline correction time-frequency analysis, obscure significant modulations continuous tasks. Consequently, inclusion as fundamental component critical accurate representation neural basis cognition.

Язык: Английский

Процитировано

1
Modifiable dementia risk associated with smaller white matter volume and altered 1/f aperiodic brain activity: cross-sectional insights from the LEISURE study DOI Creative Commons

Thomas Pace,

Jacob M. Levenstein, Toomas Erik Anijärv

и другие.

Age and Ageing, Год журнала: 2024, Номер 53(11)

Опубликована: Окт. 25, 2024

The rising prevalence of dementia necessitates identifying early neurobiological markers risk. Reduced cerebral white matter volume and flattening the slope electrophysiological 1/f spectral power distribution provide brain ageing alongside cognitive decline. However, their association with modifiable risk remains to be understood.

Язык: Английский

Процитировано

1
Dissociating Contributions of Theta and Alpha Oscillations from Aperiodic Neural Activity in Human Visual Working Memory DOI Open Access
Quirine van Engen,

Geeling Chau,

Aaron Smith

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Дек. 17, 2024

Abstract While visual working memory (WM) is strongly associated with reductions in occipitoparietal 8-12 Hz alpha power, the role of 4-7 frontal midline theta power less clear, both increases and decreases widely reported. Here, we test hypothesis that this paradox can be explained by non-oscillatory, aperiodic neural activity dynamics. Because traditional time-frequency analyses electroencephalopgraphy (EEG) data conflate oscillations activity, event-related changes manifest as task-related apparent oscillations, even when none are present. Reanalyzing EEG from two WM experiments (n = 74), leveraging spectral parameterization, found systematic load, replicated classic alpha, but not theta, oscillatory effects after controlling for changes. Aperiodic decreased during retention, further flattened over cortex an increase load. After these dynamics, aperiodic-adjusted increasing In contrast, increased because reduces more, it falsely appears though “oscillatory” (e.g., bandpower) reduced. Furthermore, only a minority participants (31/74) had detectable degree oscillations. These results offer potential resolution to where studies show contrasting We identify novel dynamics human mask play cognition behavior. Significance statement Working Memory our ability hold information mind without being present external environment. Years research focused on brain discover mechanisms WM. specifically look at measured scalp their significance supporting challenge earlier findings regarding analysis approach, while replicating oscillation findings. involved WM, regions task-general manner, anterior reduced number items remembered. Thus, have identified

Язык: Английский

Процитировано

1
Stimulus-related modulation in the 1/f spectral slope suggests an impaired inhibition of irrelevant information in people with multiple sclerosis DOI Creative Commons
Fahimeh Akbarian, Chiara Rossi, Lars Costers

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Дек. 30, 2023

Abstract Background Multiple sclerosis (MS) is an inflammatory and neurodegenerative disease characterized by neuronal synaptic loss, resulting in imbalance of excitatory inhibitory transmission. MS leads to cognitive impairment such as reduced information processing speed impaired working memory (WM). Recent studies have suggested that the 1/f slope EEG/MEG power spectra can be associated with excitation/inhibition (E/I) balance. A normal E/I balance crucial for memory. Methods We analyzed magnetoencephalographic (MEG) recordings 38 healthy control subjects 79 people multiple (pwMS) while performing n-back task. computed compared steepness spectral through FOOOF algorithm time windows [-1 0] [0 1] s peristimulus both target distractor stimulus each brain parcel different loads (0-back, 1-back, 2-back). Results The was significantly steeper after onset correlated reaction time. also observed a stimuli pwMS. Finally, we significant correlations between modulation visuospatial functioning Conclusion Our findings are consistent increased inhibition following onset. In pwMS, this increase reduced, suggesting dysfunctional irrelevant information. pencil-paper test Highlights flatter suggests less pronounced left inferior dorsal prefrontal cortex pwMS 1-back 2-back conditions. This particular known its key role motor planning, maintenance sustained attention executive functions. controls (HCs) (pwMS). correlates performance.

Язык: Английский

Процитировано

3
Modulation of aperiodic EEG activity provides sensitive index of cognitive state changes during working memory task DOI Open Access
Tisa Frelih, Andraž Matkovič, Tjaša Mlinarič

и другие.

Опубликована: Окт. 21, 2024

To better understand cognitive processes, it is essential to examine the interplay between periodic (oscillatory) and aperiodic electrophysiological brain activity. In this study, we aim clarify how components respectively reflect processes involved in working memory. Fiftyseven participants performed an n-back task while their activity was recorded using EEG. The analysis of both EEG spectrum during performance indicate that activities exhibit distinct taskrelated spatiotemporal dynamics are closely related demands. results substantial changes traditionally attributed theta oscillations memory tasks are, fact, due shifts spectral slope This suggests modulation associated with control may provide a more sensitive index state than previously recognised. validate our findings, also used these methods another task, which showed similar patterns Our findings challenge conventional understanding processing question routine practice baseline correction time-frequency analysis, obscure significant modulations continuous tasks. Consequently, inclusion as fundamental component critical accurate representation neural basis cognition.

Язык: Английский

Процитировано

0
Evaluating Aperiodic and Periodic Neural Activity as Markers of Listening Effort in Speech Perception DOI
Sarah J. Woods, Jack Silcox, Brennan R. Payne

и другие.

Auditory Perception & Cognition, Год журнала: 2024, Номер 7(3), С. 203 - 218

Опубликована: Июль 2, 2024

Listening effort (LE) is critical to understanding speech perception in acoustically challenging environments. Electroencephalograpy (EEG) alpha power has emerged as a potential neural correlate of LE. However, the magnitude and direction relationship between acoustic challenge been inconsistent literature. In current study, secondary analysis previously collected dates, we examine broadband 1/f-like exponent offset EEG spectrum measures aperiodic activity during effortful influence this on reliable estimation periodic (i.e. alpha) activity. was continuously recorded sentence listening (1–40 Hz) computed for each participant quiet noise trials separately. Using specparam algorithm, decomposed into both components found that sensitive background additionally impacted measurement noise-induced changes oscillations. We discuss implications these results LE processing literatures.

Язык: Английский

Процитировано

0