A Functional Region Decomposition Method to Enhance fNIRS Classification of Mental States

Han, Jianda; Lu, Jiewei; Lin, Jianeng; Zhang, Song; Yu, Ningbo

doi:10.1109/jbhi.2022.3201111

Cited by 3 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Research underscores the pivotal role of cortical brain activity during the performance of cognitive tasks (Christophel et al, 2018), particularly within prefrontal (Mottaghy, 2002;Tang et al, 2019) and parietal brain regions (Brodt et al, 2018;Ester et al, 2015;Sestieri et al, 2017). To probe the cortical activity associated with symmetry processing in WM tasks, our study employs functional near-infrared spectroscopy (fNIRS) -a noninvasive neuroimaging technique, able to capture cortical activity, which has been shown to be sensitive to cognitive workload changes (Causse et al, 2017;Fairclough et al, 2018;Fishburn et al, 2014;Han et al, 2022).…”

Section: Cortical Dynamics Of Symmetry Processingmentioning

confidence: 99%

Neurocognitive Dynamics and Behavioral Differences of Symmetry and Asymmetry Processing in Working Memory: Insights from fNIRS

Sztuka,

Kühn

2024

Preprint

View full text Add to dashboard Cite

Symmetry is a ubiquitous property of the visual world. It facilitates cognitive processing and fosters aesthetic appeal. Despite its importance to aesthetic experience and perceptual prominence, the integration of symmetry in working memory remains underexplored. In our study, participants engaged in working memory delayed matching to sample task involving both symmetrical and asymmetrical stimuli, while their brain activity was monitored using functional Near Infrared Spectroscopy (fNIRS). The study revealed that symmetry significantly enhances memory performance. Symmetry significantly improves task performance, with symmetrical stimuli leading to higher accuracy and faster recall than asymmetrical ones, especially under high cognitive load. This effect varies with the type of symmetry, with diagonal symmetry being the most effective. Neuroimaging data showed distinct brain activation patterns when participants processed symmetrical stimuli, particularly in the memory-straining condition. Significant differences in brain activity were observed in various brain regions, with lateral occipital, posterior parietal, medial and dorsolateral prefrontal cortices reacting to symmetry with decreased oxygenated hemoglobin (HbO), while in left orbitofrontal (HbO) and right ventrolateral prefrontal cortex (HbO and HbR) hemoglobin concentration increased. Overall, our findings highlight the complex, region-specific brain activation patterns in response to visual symmetry, emphasizing the nuanced role of symmetry in cognitive processing during memory tasks and their potential implication for creative thinking.

show abstract