Brain Functional Connectivity Networks do not Return to Resting-state During Control Trials in Block Design Experiments* DOI
Jamal Esmaelpoor, Tommy Peng, Beth Jelfs

et al.

2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), Journal Year: 2023, Volume and Issue: unknown

Published: July 24, 2023

Many studies on morphology analysis show that if short inter-stimulus intervals separate tasks, the hemodynamic response amplitude will return to resting-state baseline before subsequent stimulation onset; hence, responses successive tasks do not overlap. Accordingly, popular brain imaging techniques assume changes in subside after a time (around 15 seconds). However, whether this assumption holds when studying functional connectivity has yet be investigated. This paper assesses or network control trials returns network. Traditionally, block-design experiments are used evaluate no stimulus. We analyzed data from an event-related experiment with audio and visual stimuli resting state. Our results showed networks during were more similar of than networks. In other words, contrary task-related amplitude, where settle time, brain's their intrinsic such intervals.

Language: Английский

NIRS-BIDS: Brain Imaging Data Structure Extended to Near-Infrared Spectroscopy DOI Creative Commons
Robert Luke, Robert Oostenveld, Helena Cockx

et al.

Scientific Data, Journal Year: 2025, Volume and Issue: 12(1)

Published: Jan. 27, 2025

Language: Английский

Citations

1
Cross-modal functional connectivity supports speech understanding in cochlear implant users DOI Creative Commons
Amanda M. Fullerton, Deborah Vickers, Robert Luke

et al.

Cerebral Cortex, Journal Year: 2022, Volume and Issue: 33(7), P. 3350 - 3371

Published: Aug. 20, 2022

Abstract Sensory deprivation can lead to cross-modal cortical changes, whereby sensory brain regions deprived of input may be recruited perform atypical function. Enhanced responses visual stimuli observed in auditory cortex postlingually deaf cochlear implant (CI) users are hypothesized reflect increased activation language regions, but it is unclear if this activity “adaptive” or “mal-adaptive” for speech understanding. To determine correlated with better understanding CI users, we assessed task-related and functional connectivity cortices non-speech (n = 14) normal-hearing listeners 17) used near-infrared spectroscopy measure hemodynamic responses. We visually presented investigate neural processes related linguistic content that show beneficial effects. Specifically, an increase between the left cortices—presumed primary sites processing—was positively users’ abilities understand background noise. Cross-modal adaptive a distributed, multimodal network, enhance

Language: Английский

Citations

27
Machine learning prediction of mental health strategy selection in school aged children using neurocognitive data DOI
Richard Lamb, Jonah B. Firestone, Amanda Kavner

et al.

Computers in Human Behavior, Journal Year: 2024, Volume and Issue: 156, P. 108197 - 108197

Published: March 18, 2024

Language: Английский

Citations

4
Functional near-infrared spectroscopy: A novel tool for detecting consciousness after acute severe brain injury DOI Creative Commons
Karnig Kazazian, Androu Abdalmalak, Sergio L. Novi

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(36)

Published: Aug. 26, 2024

Recent advancements in functional neuroimaging have demonstrated that some unresponsive patients the intensive care unit retain a level of consciousness is inconsistent with their behavioral diagnosis awareness. Functional near-infrared spectroscopy (fNIRS) portable optical method can be used to measure neural activity good temporal and spatial resolution. However, reliability fNIRS for detecting correlates remains established. In series studies, we evaluated whether record sensory, perceptual, command-driven processing healthy participants behaviorally nonresponsive patients. At individual subject level, demonstrate detect commonly studied resting state networks, sensorimotor processing, speech-specific auditory volitional brain motor imagery task. We then tested three acutely injured found one could willfully modulate when instructed imagine playing game tennis—providing evidence preserved despite no observable signs The successful application awareness among highlights its potential as valuable tool uncovering hidden cognitive states critical settings.

Language: Английский

Citations

4
Measuring Speech Discrimination Ability in Sleeping Infants Using fNIRS—A Proof of Principle DOI Creative Commons
Onn Wah Lee,

Demi Gao,

Tommy Peng

et al.

Trends in Hearing, Journal Year: 2025, Volume and Issue: 29

Published: Jan. 1, 2025

This study used functional near-infrared spectroscopy (fNIRS) to measure aspects of the speech discrimination ability sleeping infants. We examined morphology fNIRS response three different contrasts, namely “Tea/Ba,” “Bee/Ba,” and “Ga/Ba.” Sixteen infants aged between 3 13 months old were included in this their data recorded during natural sleep. The stimuli presented using a nonsilence baseline paradigm, where repeated standard novel blocks without any silence periods. responses varied contrasts. fit with model which sum two independent concurrent mechanisms that derived from previously published detection responses. These components an oxyhemoglobin (HbO)-positive early-latency HbO-negative late latency response, hypothesized be related auditory canonical brain arousal respectively. goodness was high median 81%. showed both had later when left ear test ( p < .05) compared right negative component, due arousal, smallest for most subtle contrast, “Ga/Ba” = .003).

Language: Английский

Citations

0
Cortical tinnitus evaluation using functional near-infrared spectroscopy DOI
Mariana Lopes Martins, Edgard Morya, Leane Liny dos Santos Lima

et al.

Brain Research, Journal Year: 2025, Volume and Issue: unknown, P. 149561 - 149561

Published: March 1, 2025

Language: Английский

Citations

0
Cross-modal functional plasticity after cochlear implantation DOI
Jamal Esmaelpoor, Tommy Peng, Beth Jelfs

et al.

Cerebral Cortex, Journal Year: 2025, Volume and Issue: 35(4)

Published: April 1, 2025

Abstract Despite evidence that cross-modal effects after hearing loss and cochlear implantation are primarily driven by synaptic gain efficacy, few studies have evaluated functional connectivity (CMFC) to assess plasticity. This study, inspired the psychophysiological interaction (PPI) method, addresses its limitations provides a robust approach for assessing task-induced CMFC. Twenty-three postlingually deafened implant (CI) recipients 17 normal-hearing (NH) participants took part in study. Functional near-infrared spectroscopy was used measure brain activity during audio-only visual-only speech tasks, with resting-state FC as baseline, at 1 month year postimplantation. CI users’ understanding assessed Significant negative correlations were observed between contralateral CMFC outcomes, particularly links from angular gyrus (AG) visual cortex. One activation, higher found AG compared superior temporal gyrus, reflecting neural efficiency principles. Task-induced remained elevated users NH even year. These findings suggest significant marker of plasticity performance recipients.

Language: Английский

Citations

0
Short-term memory retrieval enhances brain functional connectivity DOI Creative Commons
Fajie Duan, Xiangyu Yan, Jing Wang

et al.

Frontiers in Behavioral Neuroscience, Journal Year: 2025, Volume and Issue: 19

Published: April 30, 2025

Short-term memory poses a significant challenge, involving complex processes of image perception, formation, and execution. However, the mechanisms underlying storage, execution short-term remain poorly understood. In this study, 41 healthy college students participated in challenge test designed to investigate these processes. Functional near-infrared spectroscopy (fNIRS) was employed measure dynamic changes hemoglobin concentrations specific cortical regions, while facial expressions vital signs were recorded real-time during tests. The results revealed heightened activity inferior prefrontal gyrus, visual association cortex, pre-motor supplementary motor cortex. connectivity between regions significantly enhanced tasks, inter-group differences decreased over time. Participants with superior exhibited lower levels negative emotional higher heart rates compared those weaker performance. These findings suggest that interconnectivity adequate cerebral blood oxygenation play critical roles enhancing capacity. This has important implications for education, as it highlights strategies cultivating attention, training skills, improving integration abilities.

Language: Английский

Citations

0
Effects of Age on the Auditory Cortex During Speech Perception in Noise: Evidence From Functional Near-Infrared Spectroscopy DOI Creative Commons
Yang Liu,

Songjian Wang,

Younuo Chen

et al.

Ear and Hearing, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 25, 2024

Objectives: Age-related speech perception difficulties may be related to a decline in central auditory processing abilities, particularly noisy or challenging environments. However, how the activation patterns stimulation different noise situations change with normal aging has yet elucidated. In this study, we aimed investigate effects of environments and on cortical activation. Design: We analyzed functional near-infrared spectroscopy signals 20 young adults, 21 middle-aged elderly evaluated their response stimuli under five signal ratios (SNRs). addition, behavior score, intensity, oxyhemoglobin variability, dominant hemisphere, Results: Activation intensity variability both showed decreasing trend at an SNR 0 dB; also identified strong correlation between age condition. observed inconsistent pattern when was 5 dB. Furthermore, our analysis revealed that left hemisphere more susceptible than right hemisphere. evident older adults hemisphere; contrast, younger leftward lateralization. Conclusions: Our aging, regions gradually become inflexible changes conditions, understandable low ratio but still induce highest level found affected by tasks; left-sided dominance individuals shifted aging.

Language: Английский

Citations

3
Two Independent Response Mechanisms to Auditory Stimuli Measured with Functional Near-Infrared Spectroscopy in Sleeping Infants DOI Creative Commons
Onn Wah Lee, Darren Mao, Julia Wunderlich

et al.

Trends in Hearing, Journal Year: 2024, Volume and Issue: 28

Published: Jan. 1, 2024

This study investigated the morphology of functional near-infrared spectroscopy (fNIRS) response to speech sounds measured from 16 sleeping infants and how it changes with repeated stimulus presentation. We observed a positive peak followed by wide negative trough, latter being most evident in early epochs. argue that overall captures effects two simultaneous, but independent, mechanisms are both activated at onset: one obligatory sound auditory system, other neural suppression effect induced arousal system. Because behave differently epochs, is possible mathematically separate them use fNIRS factors affect development activation system infants. The results also imply standard analysis techniques need be adjusted take into account possibilities multiple simultaneous brain systems not necessarily stationary.

Language: Английский

Citations

3