Spatial registration of multichannel multi-subject fNIRS data to MNI space without MRI

Singh, Archana; Okamoto, Masayuki; Dan, Haruka; Jurcak, Valer; Dan, Ippeita

doi:10.1016/j.neuroimage.2005.05.019

Cited by 598 publications

(424 citation statements)

References 36 publications

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“…In the current study, both the inferior frontal gyrus and the lateral orbitofrontal gyrus were included in the VLPFC. The lateral orbitofrontal gyrus is part of the orbitofrontal cortex and is involved in processing reward and emotions such as sympathy [22] and monitoring punishment, which is a self-evaluation process used to 15 analyze changes in ongoing behavior [13]. Activation of the R-and L-VLPFC during the experimental task under flow conditions may therefore suggest that these areas are involved in processing reward and emotion in a state of flow.…”

Section: Discussionmentioning

confidence: 99%

“…fNIRS optode positions and several scalp landmarks (Cz, Nz, and right and left pre-auricular points) were digitized using a three-dimensional magnetic space digitizer (FASTRAK; Polhemus, Colchester, VT, USA). Probabilistic registration [15] was used to register fNIRS data to Montreal Neurological Institute standard brain space through the international 10-20 system. The optical fNIRS data were analyzed according to the modified Beer-Lambert-Law [16] to quantify changes in oxygenated hemoglobin (oxy-Hb), deoxygenated hemoglobin, and total hemoglobin concentration [17].…”

Section: Methodsmentioning

confidence: 99%

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Brain activity during the flow experience: A functional near-infrared spectroscopy study

Yoshida

Sawamura

Inagaki

et al. 2014

Neuroscience Letters

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Brain activity during the flow experience: A functional near-infrared spectroscopy study

Yoshida

Sawamura

Inagaki

et al. 2014

Neuroscience Letters

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“…Note that in a real-life experiment, these coordinates could be obtained from 3-D digitization of the optode locations with respect to superficial landmarks on the scalp, such as 10-20 reference points. 43 The true optical properties of the head were defined as follows. The reduced scattering coefficient was set to 10 cm −1 in all tissue types.…”

Section: Simulated Datamentioning

confidence: 99%

“…40,44,46 It allows the incorporation of a realistic brain structure without the need for costly individual MRI scans. If the optode locations have been registered with respect to specific superficial landmarks, such as the 10-20 reference points, the atlas head can be registered onto the subject's head using these superficial references, as was detailed in Singh et al 43 The optical reconstruction can then be performed on this registered atlas with a known internal structure. Here we investigate the benefits of translating this atlas approach to characterizing the baseline optical properties of the brain.…”

Section: Monte Carlo Modelsmentioning

confidence: 99%

“…This anatomical atlas was first registered to each subject's head using an affine transformation of 33 superficial landmarks, from the 10-20 reference points of the atlas onto the corresponding 10-20 reference points of each subject, using the method described by Singh et al 43 In a real-case experiment, the coordinates of these landmarks can be recorded using a 3-D digitizer. This registration process also adjusts the probe on the registered atlas surface.…”

Section: Monte Carlo Modelsmentioning

confidence: 99%

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Comparison of a layered slab and an atlas head model for Monte Carlo fitting of time-domain near-infrared spectroscopy data of the adult head

et al. 2014

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Abstract. Near-infrared spectroscopy (NIRS) estimations of the adult brain baseline optical properties based on a homogeneous model of the head are known to introduce significant contamination from extracerebral layers. More complex models have been proposed and occasionally applied to in vivo data, but their performances have never been characterized on realistic head structures. Here we implement a flexible fitting routine of time-domain NIRS data using graphics processing unit based Monte Carlo simulations. We compare the results for two different geometries: a two-layer slab with variable thickness of the first layer and a template atlas head registered to the subject's head surface. We characterize the performance of the Monte Carlo approaches for fitting the optical properties from simulated time-resolved data of the adult head. We show that both geometries provide better results than the commonly used homogeneous model, and we quantify the improvement in terms of accuracy, linearity, and cross-talk from extracerebral layers.

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Effects of Physical Exercise Breaks on Executive Function in a Simulated Classroom Setting: Uncovering a Window into the Brain

Yu,

Zhang,

Ludyga

et al. 2024

Advanced Science

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Acknowledging the detrimental effects of prolonged sitting, this study examined the effects of an acute exercise break during prolonged sitting on executive function, cortical hemodynamics, and microvascular status. In this randomized crossover study, 71 college students completed three conditions: (i) uninterrupted sitting (SIT); (ii) SIT with a 15 min moderate‐intensity cycling break (MIC); and (iii) SIT with a 15 min vigorous‐intensity cycling break (VIC). Behavioral outcomes, retinal vessel diameters (central retinal artery equivalents [CRAE], retinal vein equivalents [CRVE], arteriovenous ratio [AVR]), cortical activation, and effective connectivity were evaluated. Linear mixed models identified significant positive effects of exercise conditions on behavioral reaction time (RT), error rate, and inverse efficiency score (β = −2.62, −0.19, −3.04: ps < 0.05). MIC and VIC conditions produced pre‐to‐post‐intervention increases in CRAE and CRVE (β = 4.46, 6.34), frontal activation, and resting‐state and task‐state causal density (β = 0.37, 0.06) (ps < 0.05) compared to SIT; VIC was more beneficial for executive function and neurobiological parameters. The effect of AVR on average RT was mediated through task‐based causal density (indirect effect: −0.82). Acutely interrupting prolonged sitting improves executive function, microvascular status, and cortical activation and connectivity, with causal density mediating the microvascular‐executive function link.

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Spatial registration of multichannel multi-subject fNIRS data to MNI space without MRI

Cited by 598 publications

References 36 publications

Brain activity during the flow experience: A functional near-infrared spectroscopy study

Brain activity during the flow experience: A functional near-infrared spectroscopy study

Comparison of a layered slab and an atlas head model for Monte Carlo fitting of time-domain near-infrared spectroscopy data of the adult head

Effects of Physical Exercise Breaks on Executive Function in a Simulated Classroom Setting: Uncovering a Window into the Brain

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