Functional near-infrared spectroscopy for speech protocols: characterization of motion artifacts and guidelines for improving data analysis

Neurophotonics, Journal Year: 2020, Volume and Issue: 7(01), P. 1 - 1

Published: Jan. 10, 2020

Monitoring speech tasks with functional near-infrared spectroscopy (fNIRS) enables investigation of production mechanisms and informs treatment strategies for speech-related disorders such as stuttering. Unfortunately, due to movement the temporalis muscle, can induce relative between probe optodes skin. These movements generate motion artifacts during tasks. In practice, spurious hemodynamic responses in activation signals arise from lack information about consequences artifacts, well standardized processing procedures fNIRS To this end, we characterize effects on signals, introduce a systematic analysis ameliorate artifacts. The study measured 50 healthy subjects performing jaw (JM) found that JM produces two different patterns fNIRS. remove these unwanted contributions, validate hybrid motion-correction algorithm based sequentially spline interpolation then wavelet filtering. We compared performance standard algorithms only decomposition only. corrected 94% produced by JM, it did not lead data. also validated reading task performed under conditions: aloud silently. For both conditions, observed significant cortical brain regions related reading. Moreover, when comparing good agreement spatial temporal was data were analyzed using approach. Overall, demonstrates scheme protocols. decreases intersubject variability

Language: Английский

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Adversity is Linked with Decreased Parent-Child Behavioral and Neural Synchrony

Developmental Cognitive Neuroscience, Journal Year: 2021, Volume and Issue: 48, P. 100937 - 100937

Published: Feb. 21, 2021

Parent-child synchrony-parent-child interaction patterns characterized by contingent social responding, mutual responsivity, and co-regulation-has been robustly associated with adaptive child outcomes. Synchrony has investigated in both behavioral biological frameworks. While it demonstrated that adversity can influence parent-child synchrony, the neural mechanisms which this disruption occurs are understudied. The current study examined association between adversity, synchrony across lateral prefrontal cortical regions using functional near-infrared spectroscopy hyperscanning during a task included mild stress induction followed recovery period. Participants 115 children (ages 4-5) their primary caregivers. was quantified as amount time dyad synchronous (e.g., reciprocal communication, coordinated behaviors) task. hemodynamic concordance parent PFC activation. Adversity two, empirically-derived domains: sociodemographic risk family income) familial household chaos). Adversity, domains, decreased conditions. Sociodemographic context of experimentally-induced stress. These findings link to synchrony.

Language: Английский

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The use of broad vs restricted regions of interest in functional near-infrared spectroscopy for measuring cortical activation to auditory-only and visual-only speech

Hearing Research, Journal Year: 2021, Volume and Issue: 406, P. 108256 - 108256

Published: April 28, 2021

Language: Английский

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Cross-modal functional connectivity supports speech understanding in cochlear implant users

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

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Stress management using fNIRS and binaural beats stimulation

Biomedical Optics Express, Journal Year: 2022, Volume and Issue: 13(6), P. 3552 - 3552

Published: May 20, 2022

In this study, we investigate the effectiveness of binaural beats stimulation (BBs) in enhancing cognitive vigilance and mitigating mental stress level at workplace. We developed an experimental protocol under four conditions: high (HV), enhancement (VE), (MS) mitigation (SM). The VE SM conditions were achieved by listening to 16 Hz BBs. assessed using salivary alpha-amylase, behavioral responses, Functional Near-Infrared Spectroscopy (fNIRS). quantified levels reaction time (RT) stimuli, accuracy detection, functional connectivity metrics fNIRS estimated Phase Locking Values (PLV). propose orthogonal minimum spanning tree (OMST) determine true network patterns PLV. Our results show that 16-Hz BBs has significantly reduced alpha amylase 44%, RT stimuli 20% increased target detection 25%, ( p < 0.001). analysis across different revealed several statistically significant trends. Specifically, a increase between right left dorsolateral prefrontal cortex (DLPFC) areas orbitofrontal was found during condition compared vigilance. Likewise, similar DLPFC, cortex, ventrolateral (VLPFC) frontopolar PFC (prefrontal cortex) area stress. Furthermore, alone showed VLPFC DLPFC other areas. laterality index demonstrated frontal conditions, while Overall, our can be used for mitigation.

Language: Английский

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