Effectiveness Evaluation of Real-Time Scalp Signal Separating Algorithm on Near-Infrared Spectroscopy Neurofeedback

Ung, Wei Chun; Funane, Tsukasa; Katura, Takusige; Sato, Hiroki; Tang, Tong Boon; Hani, Ahmad Fadzil M.; Kiguchi, Masashi

doi:10.1109/jbhi.2017.2723024

Cited by 17 publications

(5 citation statements)

References 33 publications

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“…However, because we captured only the frontal region, we can consider high density fNIRS to simultaneously investigate all potential cortical neuronal networks. Using a pulse oximeter and a short-distance measurement simultaneously could significantly minimize the scalp effect and systemic noise [54]. While we explored BBs at a single frequency of 16 Hz in this study, future research should investigate more frequencies.…”

Section: Discussionmentioning

confidence: 99%

Mental Stress Management Using fNIRS Directed Connectivity and Audio Stimulation

Katmah

Al-Shargie

Tariq

et al. 2023

IEEE Trans. Neural Syst. Rehabil. Eng.

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In this study, we propose a method to enhance cognitive vigilance and mitigate mental stress in the workplace. We designed an experiment to induce stress by putting participants through Stroop Color-Word Task (SCWT) under time constraint and negative feedback. Then, we used 16 Hz binaural beats auditory stimulation (BBs) for 10 minutes to enhance cognitive vigilance and mitigate stress. Functional Near-Infrared Spectroscopy (fNIRS), salivary alpha-amylase, and behavioral reactions were used to determine the stress level. The level of stress was assessed using reaction time to stimuli (RT), accuracy of target detection, directed functional connectivity based on partial directed coherence, graph theory measures, and the laterality index (LI). We discovered that 16 Hz BBs mitigated mental stress by substantially increasing the target detection accuracy by 21.83% (p < 0.001) and decreasing salivary alpha amylase levels by 30.28% (p < 0.01). The partial directed coherence, graph theory analysis measures, and LI results indicated that mental stress decreased information flow from the left to the right prefrontal cortex under stress, whereas the 16 Hz BBs had a major impact on enhancing vigilance and mitigating mental stress via boosting connectivity network on the dorsolateral and left ventrolateral prefrontal cortex.

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Section: Discussionmentioning

confidence: 99%

Mental Stress Management Using fNIRS Directed Connectivity and Audio Stimulation

Katmah

Al-Shargie

Tariq

et al. 2023

IEEE Trans. Neural Syst. Rehabil. Eng.

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“…Due to this constraint, MD-ICA cannot be used for real-time processing as required in NFB. Alternatively, (Ung et al 2017) examined the real-time scalp signal separating (RT-SSS) algorithm for the retrieval of reliable scalp signals. RT-SSS takes the source-detector (SD) distance into account.…”

Section: Nirs Based Nfbmentioning

confidence: 99%

Mitigation of stress: new treatment alternatives

et al. 2017

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Complaints of stress are common in modern life. Psychological stress is a major cause of lifestyle-related issues, contributing to poor quality of life. Chronic stress impedes brain function, causing impairment of many executive functions, including working memory, decision making and attentional control. The current study sought to describe newly developed stress mitigation techniques, and their influence on autonomic and endocrine functions. The literature search revealed that the most frequently studied technique for stress mitigation was biofeedback (BFB). However, evidence suggests that neurofeedback (NFB) and noninvasive brain stimulation (NIBS) could potentially provide appropriate approaches. We found that recent studies of BFB methods have typically used measures of heart rate variability, respiration and skin conductance. In contrast, studies of NFB methods have typically utilized neurocomputation techniques employing electroencephalography, functional magnetic resonance imaging and near infrared spectroscopy. NIBS studies have typically utilized transcranial direct current stimulation methods. Mitigation of stress is a challenging but important research target for improving quality of life.

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“…Thus, the SC signals can be used as regressor for subsequent offline statistical analysis. The use of this approach in fNIRS-based NF studies is poorly documented [ 23 , 24 ] and to date, most of fNIRS-NF studies have been conducted without SC. Since the fNIRS-NF setup without SC might be better suited for clinical purposes, it is thus important to investigate the link between online NF signal without SC, experienced by the participants, and the offline SC-corrected signal, which can be more reflective of accurate neuronal activation.…”

Section: Introductionmentioning

confidence: 99%

Subjective feeling of control during fNIRS-based neurofeedback targeting the DL-PFC is related to neural activation determined with short-channel correction

et al. 2023

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Neurofeedback (NF) training is a promising preventive and therapeutic approach for brain and behavioral impairments, the dorsolateral prefrontal cortex (DL-PFC) being a relevant region of interest. Functional near-infrared spectroscopy (NIRS) has recently been applied in NF training. However, this approach is highly sensitive to extra-cerebral vascularization, which could bias measurements of cortical activity. Here, we examined the feasibility of a NF training targeting the DL-PFC and its specificity by assessing the impact of physiological confounds on NF success via short-channel offline correction under different signal filtering conditions. We also explored whether the individual mental strategies affect the NF success. Thirty volunteers participated in a single 15-trial NF session in which they had to increase the oxy-hemoglobin (HbO2) level of their bilateral DL-PFC. We found that 0.01–0.09 Hz band-pass filtering was more suited than the 0.01–0.2 Hz band-pass filter to highlight brain activation restricted to the NF channels in the DL-PFC. Retaining the 10 out of 15 best trials, we found that 18 participants (60%) managed to control their DL-PFC. This number dropped to 13 (43%) with short-channel correction. Half of the participants reported a positive subjective feeling of control, and the “cheering” strategy appeared to be more effective in men (p<0.05). Our results showed successful DL-PFC fNIRS-NF in a single session and highlighted the value of accounting for extra cortical signals, which can profoundly affect the success and specificity of NF training.

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Effectiveness Evaluation of Real-Time Scalp Signal Separating Algorithm on Near-Infrared Spectroscopy Neurofeedback

Cited by 17 publications

References 33 publications

Mental Stress Management Using fNIRS Directed Connectivity and Audio Stimulation

Mental Stress Management Using fNIRS Directed Connectivity and Audio Stimulation

Mitigation of stress: new treatment alternatives

Subjective feeling of control during fNIRS-based neurofeedback targeting the DL-PFC is related to neural activation determined with short-channel correction

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