scholarly journals Feasibility study of immersive virtual prism adaptation therapy with depth-sensing camera using functional near-infrared spectroscopy in healthy adults

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Sungmin Cho ◽  
Won Kee Chang ◽  
Jihong Park ◽  
Seung Hyun Lee ◽  
Jongseung Lee ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Feasibility Study ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Prism Adaptation ◽  
Depth Sensing ◽  
Functional Near Infrared Spectroscopy ◽  
Cortical Areas ◽  
After Effect ◽  
The Right

AbstractPrism Adaptation (PA) is used to alleviate spatial neglect. We combined immersive virtual reality with a depth-sensing camera to develop virtual prism adaptation therapy (VPAT), which block external visual cues and easily quantify and monitor errors than conventional PA. We conducted a feasibility study to investigate whether VPAT can induce behavioral adaptations by measuring after-effect and identifying which cortical areas were most significantly activated during VPAT using functional near-infrared spectroscopy (fNIRS). Fourteen healthy subjects participated in this study. The experiment consisted of four sequential phases (pre-VPAT, VPAT-10°, VPAT-20°, and post-VPAT). To compare the most significantly activated cortical areas during pointing in different phases against pointing during the pre-VPAT phase, we analyzed changes in oxyhemoglobin concentration using fNIRS during pointing. The pointing errors of the virtual hand deviated to the right-side during early pointing blocks in the VPAT-10° and VPAT-20° phases. There was a left-side deviation of the real hand to the target in the post-VPAT phase, demonstrating after-effect. The most significantly activated channels during pointing tasks were located in the right hemisphere, and possible corresponding cortical areas included the dorsolateral prefrontal cortex and frontal eye field. In conclusion, VPAT may induce behavioral adaptation with modulation of the dorsal attentional network.

scholarly journals Immersive virtual prism adaptation therapy with depth sensing camera: A feasibility study with functional near infrared spectroscopy in healthy adults

2021 ◽  
Author(s):  
Sungmin Cho ◽  
Won-Seok Kim ◽  
Jihong Park ◽  
Seung Hyun Lee ◽  
Jongseung Lee ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Right Hemisphere ◽  
Prism Adaptation ◽  
Spatial Neglect ◽  
Depth Sensing ◽  
Functional Near Infrared Spectroscopy ◽  
Unilateral Spatial Neglect ◽  
The Right

Unilateral spatial neglect (USN) is common after stroke and associated with poor functional recovery. Prism adaptation (PA) is one of the most supported modality able to ameliorate USN but underapplied due to several issues. Using immersive virtual reality and depth-sensing camera, we developed the virtual prism adaptation therapy (VPAT) to overcome the limitations in conventional PA. In this study, we investigated whether VPAT can induce behavioral adaptations and which cortical area is most significantly activated. Fourteen healthy subjects participated in this study. The experiment consisted of four sequential phases (pre-VAPT, VPAT-10°, VPAT-20°, and post-VPAT) with functional near-infrared spectroscopy recordings. Each phase consisted of alternating target pointing and resting (or clicking) blocks. To find out the most significantly activated area during pointing in different phases (VPAT-10°, VPAT-20°, and Post-VPAT) in contrast to pointing during the pre-VPAT phase, we analyzed changes in oxyhemoglobin concentration during pointing. The pointing errors of the virtual hand deviated to the right-side during early pointing blocks in the VPAT-10°and VPAT-20°phases. There was a left-side deviation of the real hand to the target in the post-VPAT phase. The most significantly activated channels were all located in the right hemisphere, and possible corresponding cortical areas included the dorsolateral prefrontal cortex and frontal eye field. In conclusion, VPAT may induce behavioral adaptation with modulation of the dorsal attentional network. Future clinical trials using multiple sessions of a high degree of rightward deviation VPAT over a more extended period are required in stroke patients with unilateral spatial neglect.

The neural correlates of inhibitory control in 10-month-old infants: a functional near-infrared spectroscopy study

2021 ◽  
Author(s):  
Abigail Fiske ◽  
Carina de Klerk ◽  
Katie Y. K. Lui ◽  
Liam H Collins-Jones ◽  
Alexandra Hendry ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Inhibitory Control ◽  
Near Infrared Spectroscopy ◽  
Response Inhibition ◽  
Near Infrared ◽  
Neural Correlates ◽  
Older Children ◽  
Functional Near Infrared Spectroscopy ◽  
Inhibition Performance ◽  
The Right

Inhibitory control, a core executive function, emerges in infancy and develops rapidly across childhood. Methodological limitations have meant that studies investigating the neural correlates underlying inhibitory control in infancy are rare. Employing functional near-infrared spectroscopy alongside a novel touchscreen task that measures response inhibition, this study aimed to uncover the neural underpinnings of inhibitory control in 10-month-old infants (N = 135). We found that when inhibition is required, the right prefrontal and parietal cortices were more activated than when there is no inhibitory demand. Further, activation in right prefrontal areas was associated with individual differences in response inhibition performance. This demonstrates that inhibitory control in infants as young as 10 months of age is supported by similar brain areas as in older children and adults. With this study we have lowered the age-boundary for localising the neural substrates of response inhibition to the first year of life.

scholarly journals Shedding light on the prefrontal correlates of mental workload in simulated driving: a functional near-infrared spectroscopy study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Christoph F. Geissler ◽  
Jörn Schneider ◽  
Christian Frings
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Spatial Information ◽  
Mental Workload ◽  
Middle Frontal Gyrus ◽  
Brain Computer Interfaces ◽  
Functional Near Infrared Spectroscopy ◽  
Computer Interfaces ◽  
The Right

AbstractOptimal mental workload plays a key role in driving performance. Thus, driver-assisting systems that automatically adapt to a drivers current mental workload via brain–computer interfacing might greatly contribute to traffic safety. To design economic brain computer interfaces that do not compromise driver comfort, it is necessary to identify brain areas that are most sensitive to mental workload changes. In this study, we used functional near-infrared spectroscopy and subjective ratings to measure mental workload in two virtual driving environments with distinct demands. We found that demanding city environments induced both higher subjective workload ratings as well as higher bilateral middle frontal gyrus activation than less demanding country environments. A further analysis with higher spatial resolution revealed a center of activation in the right anterior dorsolateral prefrontal cortex. The area is highly involved in spatial working memory processing. Thus, a main component of drivers’ mental workload in complex surroundings might stem from the fact that large amounts of spatial information about the course of the road as well as other road users has to constantly be upheld, processed and updated. We propose that the right middle frontal gyrus might be a suitable region for the application of powerful small-area brain computer interfaces.

scholarly journals Human discrimination and categorization of emotions in voices: a functional Near-Infrared Spectroscopy (fNIRS) study

2019 ◽  
Author(s):  
T. Gruber ◽  
C. Debracque ◽  
L. Ceravolo ◽  
K. Igloi ◽  
B. Marin Bosch ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Right Hemisphere ◽  
Functional Near Infrared Spectroscopy ◽  
Emotional Cues ◽  
Emotion Word ◽  
Emotional Appraisal ◽  
The Right ◽  
Linguistic Content

AbstractVariations of the vocal tone of the voice during speech production, known as prosody, provide information about the emotional state of the speaker. In recent years, functional imaging has suggested a role of both right and left inferior frontal cortices in attentive decoding and cognitive evaluation of emotional cues in human vocalizations. Here, we investigated the suitability of functional Near-Infrared Spectroscopy (fNIRS) to study frontal lateralization of human emotion vocalization processing during explicit and implicit categorization and discrimination. Participants listened to speech-like but semantically meaningless words spoken in a neutral, angry or fearful tone and had to categorize or discriminate them based on their emotional or linguistic content. Behaviorally, participants were faster to discriminate than to categorize and they processed the linguistic content of stimuli faster than their emotional content, while an interaction between condition (emotion/word) and task (discrimination/categorization) influenced accuracy. At the brain level, we found a four-way interaction in the fNIRS signal between condition, task, emotion and channel, highlighting the involvement of the right hemisphere to process fear stimuli, and of both hemispheres to treat anger stimuli. Our results show that fNIRS is suitable to study vocal emotion evaluation in humans, fostering its application to study emotional appraisal.

scholarly journals The mapping of cortical activation by near-infrared spectroscopy might be a biomarker related to the severity of fibromyalgia’s symptoms

2021 ◽  
Author(s):  
Daniela Gabiatti Donadel ◽  
Maxciel Zortea ◽  
Iraci Lucena da Silva Torres ◽  
Felipe Fregni ◽  
Wolnei Caumo
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Roc Analysis ◽  
Near Infrared ◽  
Clinical Symptoms ◽  
Cortical Activation ◽  
Functional Near Infrared Spectroscopy ◽  
The Right ◽  
Relationship Of ◽  
The Relationship

Abstract We compared the activation pattern at the motor cortex (MC and prefrontal cortex (PFC) based on the delta value (Δ) of oxy-hemoglobin (HbO) by functional near-infrared spectroscopy (fNIRS). We examined the relationship of the ΔHbO based on the peaks at 5°C and 25°C by right-hand immersion in water in 22 fibromyalgia and 19 controls. Fibromyalgia showed a shorter peak latency for HbO at the left MC. In contrast, at the left MC, their HbO increased 117.64% compared to 92.85% in the controls. A receiver operator characteristics (ROC) analysis showed the ΔHbO cutoffs equal to –0.175 at the left and –0.205 at the right PFC offer sensitivity and specificity of at least 80% in screening fibromyalgia compared to controls. In fibromyalgia, a ROC analysis showed that these cutoff points could discriminate those with higher disability due to pain and more severe central sensitization symptoms (CSS). The ROC with the best discriminatory profile was to the CSS score with the ΔHbO at the left PFC (AUC = 0.82, CI 95% = 0.61–100). These results indicate that cortical activation based on the ΔHbO at the PFC might be a sensitive marker to identify those fibromyalgia patients with more severe clinical symptoms.

scholarly journals Abnormal Cortical Activation Patterns Among Chinese-Speaking Schizophrenia Patients During Category and Letter Verbal Fluency Tasks Revealed by Multi-Channel Functional Near-Infrared Spectroscopy

2021 ◽  
Vol 12 ◽  
Author(s):  
Juan Li ◽  
Junlin Mu ◽  
Chenyu Shen ◽  
Guanqun Yao ◽  
Kun Feng ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Left Hemisphere ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Right Hemisphere ◽  
Cortical Activation ◽  
Chinese Patients ◽  
Healthy Controls ◽  
Functional Near Infrared Spectroscopy ◽  
The Right

Background: Functional near-infrared spectroscopy (fNIRS) has many advantages over other neuroimaging modalities for routine measurement of task-dependent cortical activation, but most fNIRS studies of schizophrenia have used letter fluency tasks (LFTs). Further, performances on category fluency tasks (CFTs) and LFTs may be distinct in Chinese patients due to the unique semantic features of Chinese written characters. To identify unique disease biomarkers measurable by fNIRS in Chinese schizophrenia patients, this study compared cortical oxygenated hemoglobin changes ([oxy-Hb]) during a Chinese LFT and CFT between patients and healthy controls.Methods: Inpatients of the Second Affiliated Hospital of Xinxiang Medical University were recruited from Match 2020 to July 2021. The Positive and Negative Symptom Scale (PANSS) was used to evaluate psychiatric symptoms. Dynamic changes in [oxy-Hb], an indicator of neural activity, were measured during CFT and LFT performance by 52-channel fNIRS.Results: Forty-seven schizophrenia inpatients and 29 healthy controls completed all tests. Schizophrenia patients showed significant cortical activation at 15 channels covering the left hemisphere and 17 channels over the right hemisphere during the CFT. During the LFT, activity was significantly increased at only six channels, all over the left hemisphere (FDR P < 0.05). In healthy controls, significant [oxy-Hb] increases were found at 24 channels over the left hemisphere and 19 channels over the right hemisphere during CFT. While during the LFT, the significant increases were found at 7 channels all over the left hemisphere (FDR P < 0.05). When years of education was included as a covariate, the schizophrenia group demonstrated no significant hypoactivation relative to healthy controls at any channel after FDR correction (FDR P < 0.05) during CFT while demonstrated significant hypoactivation at channel 11 during LFT (FDR P < 0.05). There were no significant associations between PANSS scores and [oxy-Hb] changes after FDR correction (FDR P < 0.05).Conclusions: Left lateralization during CFT was reduced among schizophrenia patients and may be related to the semantic deficit. The Chinese-CFT could be a more sensitive indicator of frontal-temporal dysfunction in schizophrenia.

scholarly journals A Willingness-to-Pay Associated Right Prefrontal Activation During a Single, Real Use of Lipsticks as Assessed Using Functional Near-Infrared Spectroscopy

2021 ◽  
Vol 2 ◽  
Author(s):  
Kazue Hirabayashi ◽  
Tatsuya Tokuda ◽  
Tomomi Nishinuma ◽  
Keith Kawabata Duncan ◽  
Keiko Tagai ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Willingness To Pay ◽  
Near Infrared Spectroscopy ◽  
Subjective Experience ◽  
Near Infrared ◽  
Group Differences ◽  
Functional Near Infrared Spectroscopy ◽  
Positive Correlation ◽  
Consistent Group ◽  
The Right

Understanding consumer preferences and behavior is a major goal of consumer-oriented companies. The application of neuroscience to this goal is a promising avenue for companies. Previously, we observed a positive correlation during actual cosmetic use between the right dorsolateral prefrontal cortex (dlPFC) activity, measured by functional near-infrared spectroscopy (fNIRS), and the associated willingness-to-pay (WTP) values. However, we were unable to find any consistent group differences in the right dlPFC between different powdery foundations. Thus, the main objective of this study was to replicate the previous study and in addition, we aimed to refine the method of the previous study to increase the chance that a difference in valuation between different products can be detected. Twenty-five frequent lipstick using females were asked to apply six different lipsticks to their lips and to record how much they were willing to pay. To maximize the variation of the subjective experience of the products and the associated brain activity, the most preferred color lipstick and a less preferred color lipstick were chosen for each participant, and each color of lipstick had three different textures (Lo, Mid, and Hi). The time series was analyzed with the general linear model (GLM) and the correlation between the right dlPFC beta scores for the lipsticks and their respective WTP values conducted for each participant. This revealed a significant positive correlation and replicated our previous study. Surprisingly, the lipstick color and the texture manipulations did not result in any consistent differences in WTP and similarly no consistent group differences in brain activations. This study replicates our previous study extending it to a different type of cosmetic. The right dlPFC activity during the use of cosmetics may be a potential brain-based personalization or product selection process biomarker.

Frontal  activation  patterns  during  Tetris game  play  and  differences  between  high  and  low performers:  a preliminary functional  near-infrared  spectroscopy study

2019 ◽  
Author(s):  
Takayuki Nakahachi ◽  
Ryouhei Ishii ◽  
Leonides Canuet ◽  
Iori Sato ◽  
Kiyoko Kamibeppu ◽  
...  
Keyword(s):  
Prefrontal Cortex ◽  
Infrared Spectroscopy ◽  
Frontal Cortex ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Cortical Activation ◽  
The Other ◽  
Functional Near Infrared Spectroscopy ◽  
Activation Patterns ◽  
The Right

Abstract Background: Tetris has recently expanded its place of activity not only to the original entertainment but also to clinical applications such as prevention of trauma flashback. However, to our knowledge, no studies focused on the cortical activation patterns themselves when playing Tetris in a natural form. This study aimed to investigate the activation patterns in the frontal cortex during naturally-performed Tetris for 90 seconds in 24 healthy subjects using functional near-infrared spectroscopy robust to artifacts by motion and electric devices. We also calculated the correlations of behavioral data with cortical activations, and compared the differences in activations between the high and low performers of Tetris. Results: The results demonstrated that significant activations in the frontal cortex during Tetris play had two factors, each showing a similar activation pattern. One of the factors was distributed over the lateral prefrontal cortex bilaterally, and the other was localized to the right prefrontal cortex. Moreover, in the high performers, the activations of the areas centered on the right dorsolateral prefrontal cortex (DLPFC) were estimated to increase and correlations of the activations between those areas and the other areas decrease compared with the low performers. Conclusions: It is suggested that high Tetris performers might reduce functional connectivity between activations of the areas centered on the right DLPFC and the other areas, and increase the local activations compared with low performers. It would be necessary to consider whether its visuospatial cognitive loads stimulate the appropriate areas of the subject’s brain to effectively utilize Tetris play for clinical interventions.

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