Wearable functional near‐infrared spectroscopy for measuring dissociable activation dynamics of prefrontal cortex subregions during working memory

Shin, Jung Han; Kang, Min Jun; Lee, Sang Ah

doi:10.1002/hbm.26619

Cited by 3 publications

References 90 publications

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Volleyball training improves working memory in children aged 7 to 12 years old: an fNIRS study

Zhong,

Dai,

et al. 2024

Cerebral Cortex

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This study aimed to investigate the effect of a 12-wk extracurricular volleyball training on working memory from both behavioral and cerebral aspects. A total of 80 children were randomized assigned to (i) the experimental group, who engaged in extracurricular volleyball training for 60 min, thrice a week for 12 wk, and (ii) the control group, who maintained their regular daily routine. Working memory was evaluated in both groups using the N-back task before and after the intervention. Furthermore, functional near-infrared spectroscopy was employed to monitor the level of oxygenated hemoglobin in the prefrontal cortex. The experimental group performed better in the behavioral task than the control group, as evidenced by a shorter response time and a higher correct rate. The functional near-infrared spectroscopy results suggested that the activation of the left dorsolateral prefrontal cortex was significantly higher in the experimental group than in the control group. In addition, correlation analyses showed that the enhancement of left dorsolateral prefrontal cortex activation was significantly correlated with decreasing response time and improving response accuracy in the N-back task. These findings suggest that the left dorsolateral prefrontal cortex is likely the neural substrate for improved working memory performance elicited by 12-wk open skill exercise.

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Volleyball training improves working memory in children aged 7 to 12 years old: an fNIRS study

Zhong,

Dai,

et al. 2024

Cerebral Cortex

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Disruption of sustained attention and orbitofrontal cortex engagement by incoming social media messages vary as a function of problematic social media use

Liu,

Kendrick

et al. 2024

Preprint

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BackgroundSmartphones and social media have become ubiquitous in our lives, and while debates about their negative impact on mental health, addictive potential, and disruptive effects on daily activities have surged, neurobiological evidence remains scarce. Here, we investigated whether the behavioral and neural effects of interference of continuous attention by incoming social media messages on WeChat varies according to its problematic use as assessed via an addiction framework.MethodsN = 60 healthy individuals were stratified based on their level of problematic WeChat usage as measured by the WeChat Addiction Scale (WAS): LOW (15 males and 15 females) and HIGH (15 males and 15 females) addictive tendencies. Participants underwent an AX-Continuous Performance Task (AX-CPT) with WeChat-associated (incoming message) and neutral auditory distractors as well as a no distractor condition. Concurrent functional Near-Infrared Spectroscopy (fNIRS) assessments of the orbitofrontal cortex (OFC) were implemented to determine the underlying neurofunctional mechanisms.ResultsOn the behavioral level the HIGH group demonstrated faster reaction times during the WeChat and no distractor condition compared to the LOW group. Exploratory analyses indicated that the WeChat distraction decreased left lateral OFC activity in the LOW but enhanced activity in this region in the HIGH group.ConclusionAgainst our hypotheses WeChat distraction enhanced behavioral performance specially in individual with a tendency for problematic WeChat use, with the neural data pointing to less suppression of the OFC in individuals with a tendency for problematic usage. Findings underscore the complexity of the potential effects of new technology on daily live and indicate that addiction models might not be simply extendable to problematic social media usage.

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Cross-modal Functional Plasticity after Cochlear-implantation

Esmaelpoor,

Peng,

Jelfs

et al. 2024

Preprint

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Objective: Despite evidence that cross-modal effects after hearing loss and cochlear implantation are primarily conveyed through synaptic gain and efficacy rather than reorganized fiber tracts, few studies have assessed cross-modal functional connectivity (CMFC) to evaluate plasticity. This study, inspired by the psychophysiological interactions (PPI) method, addresses its limitations and provides a robust approach to evaluating task-induced CMFC. Design: Twenty-two post-lingually deafened, newly implanted adult cochlear implant (CI) recipients with severe hearing loss in the contralateral ear and 17 normal-hearing (NH) subjects participated. The experiment included audio-only and visual-only speech tasks, with resting-state FC as a baseline. Functional near-infrared spectroscopy (fNIRS) measured brain imaging data one month and one year post-implantation. CI users' speech understanding performance was evaluated one year after implantation. Results: A negative correlation was found between average contralateral task-induced CMFC and speech outcomes, particularly in links from the angular gyrus (AG), both one month and one year post-activation. Plastic changes showed higher task-induced CMFC in AG compared to the superior temporal gyrus (STG), aligning with neural efficiency principles. Task-induced CMFC remained elevated in CI users compared to NH cohorts even after one year. Conclusion: Task-induced CMFC can serve as a significant marker of cross-modal plasticity and speech performance in CI recipients, indicating increased reliance on cross-modal processing in one year after implantation.

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Wearable functional near‐infrared spectroscopy for measuring dissociable activation dynamics of prefrontal cortex subregions during working memory

Cited by 3 publications

References 90 publications

Volleyball training improves working memory in children aged 7 to 12 years old: an fNIRS study

Volleyball training improves working memory in children aged 7 to 12 years old: an fNIRS study

Disruption of sustained attention and orbitofrontal cortex engagement by incoming social media messages vary as a function of problematic social media use

Cross-modal Functional Plasticity after Cochlear-implantation

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