Relationship Between Cerebral Blood Oxygenation and Electrical Activity During Mental Stress Tasks: Simultaneous Measurements of NIRS and EEG

Nagasawa, Y.; Ishida, Marie; Komuro, Yuki; Ushioda, S; Hu, Lingyun; Sakatani, Kaoru

doi:10.1007/978-3-030-34461-0_14

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…Our observation that mental stress increases PFC tissue perfusion (by virtue of increased TOI and O 2 Hb, and decreased HHb) is in line with previous findings that have reported elevated CBF during such stress [ 10 , 12 ]. The increase in CBF is likely to be mediated in part by the systemic increase in CO shown during mental stress, driven by stress-induced elevations in HR ( Figure 2 ).…”

Section: Discussionsupporting

confidence: 93%

“…Acute laboratory mental stress has been evidenced to increase cerebral blood velocity [ 10 ], as well as increase oxyhaemoglobin and decrease deoxyhaemoglobin concentration in the PFC [ 11 , 12 ], both outcome measures indicative of elevated cerebral blood flow (CBF). Increased nitric oxide (NO) bioavailability and systemic increases in blood pressure and cardiac output have all been implicated as potential mechanisms for the increased cerebral perfusion induced during stress [ 12 , 13 , 14 ]. Importantly, CBF during mental stress is impaired in populations at risk of CVD, such as people with hypertension [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Fat Consumption Attenuates Cortical Oxygenation during Mental Stress in Young Healthy Adults

Baynham,

Lucas,

Weaver

et al. 2023

Nutrients

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Mental stress has been associated with cardiovascular events and stroke, and has also been linked with poorer brain function, likely due to its impact on cerebral vasculature. During periods of stress, individuals often increase their consumption of unhealthy foods, especially high-fat foods. Both high-fat intake and mental stress are known to impair endothelial function, yet few studies have investigated the effects of fat consumption on cerebrovascular outcomes during periods of mental stress. Therefore, this study examined whether a high-fat breakfast prior to a mental stress task would alter cortical oxygenation and carotid blood flow in young healthy adults. In a randomised, counterbalanced, cross-over, postprandial intervention study, 21 healthy males and females ingested a high-fat (56.5 g fat) or a low-fat (11.4 g fat) breakfast 1.5 h before an 8-min mental stress task. Common carotid artery (CCA) diameter and blood flow were assessed at pre-meal baseline, 1 h 15 min post-meal at rest, and 10, 30, and 90 min following stress. Pre-frontal cortex (PFC) tissue oxygenation (near-infrared spectroscopy, NIRS) and cardiovascular activity were assessed post-meal at rest and during stress. Mental stress increased heart rate, systolic and diastolic blood pressure, and PFC tissue oxygenation. Importantly, the high-fat breakfast reduced the stress-induced increase in PFC tissue oxygenation, despite no differences in cardiovascular responses between high- and low-fat meals. Fat and stress had no effect on resting CCA blood flow, whilst CCA diameter increased following consumption of both meals. This is the first study to show that fat consumption may impair PFC perfusion during episodes of stress in young healthy adults. Given the prevalence of consuming high-fat foods during stressful periods, these findings have important implications for future research to explore the relationship between food choices and cerebral haemodynamics during mental stress.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Fat Consumption Attenuates Cortical Oxygenation during Mental Stress in Young Healthy Adults

Baynham,

Lucas,

Weaver

et al. 2023

Nutrients

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“…The decrease in activity in the PFC observed during the simple block-tapping task, especially in healthy young participant without cognitive decline, may be regarded as relaxation considering the stress reduction effects of gum chewing reported in previous studies [ 20 , 24 , 25 ]. Moreover, the CBF decreased when biting a soft block by molars, showing the interaction between tooth type and material type.…”

Section: Discussionmentioning

confidence: 85%

Stress Reduction Effects during Block-Tapping Task of Jaw in Healthy Participants: Functional Near-Infrared Spectroscopy (fNIRS) Measurements of Prefrontal Cortex Activity

2022

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The purpose of this study was to explore the influence of simple jaw opening and closing task of chewing movements on the activities of the prefrontal cortex (PFC) from the viewpoint of stress reduction. We measured cerebral blood flow (CBF) in the PFC during a block-tapping task of the jaw in healthy participants. Eleven young healthy individuals with normal dentition (7 males and 4 females, mean age 28.0 ± 3.7 years) volunteered for this study. CBF was measured using a wearable, functional near-infrared spectroscopy device. Measurements were taken using the central incisors and first molars at interocclusal distances of 5 and 10 mm. The participants were asked to bite a hard/soft block. CBF in all conditions showed limited variability or decreasing trend compared to resting state before the task. The main effect was observed for interocclusal distance (p = 0.008), and there were no significant differences for measurement area of the PFC, tooth type, and material type. An interaction was found between tooth type and material type. In conclusion, these results suggest that simple and rhythmical chewing motion has an effect of reducing CBF in the PFC and resting the PFC, which is an especially notable aspect of periodontal sensory information in the molar.

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“…Currently, electroencephalogram (EEG) [23], positron emission tomography (PET) [24], magnetic resonance imaging (MRI) [25], and NIRS are used in neuroimaging methods, among which NIRS is suitable for measuring tasks involving motion and tasks that mimic daily life because of its low noise and low-constraint measurement techniques [26]. NIRS is a technique for measuring blood flow dynamics in the cerebral cortex, which is involved in cognitive function, using near-infrared light.…”

Section: Related Workmentioning

confidence: 99%

Effects of Display Response Latency on Brain Activity During Device Operation

et al. 2023

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Human-machine interface (HMI) devices have become multifunctional and complicated to operate, requiring better usability. Nevertheless, response latency (time lag between operation input and display output) negatively impacts device usability because it is stressful and reduces the operator's sense of agency (SoA)-the sense that the operator is the one who is causing or generating an action. Stress and SoA information can be obtained by measuring physiological indicators, such as brain activity. This study was designed to investigate the effects of response latency on the operator's brain activity state through nearinfrared spectroscopy, which measures the brain activity state based on changes in the concentration of oxygenated hemoglobin (ΔOxy-Hb). In this study, 15 subjects performed a target-tracking task in which they rotated an HMI commander used as an in-vehicle device to manipulate LED markers on a display. The temporal response latency (0, 50, 100, and 150 ms) between manipulating the commander and the display response was introduced, and the subject's brain activity, subjective evaluation, and performance efficiency were measured. The results revealed that brain activity differed depending on whether the latency was recognized rather than the latency length, and that ΔOxy-Hb at the anterior prefrontal cortex of those who recognized the latency increased significantly, whereas that of those who did not recognize the latency did not increase. Specifically, latency perception activates the prefrontal cortex due to stress and the inability to prepare normally for the next action, and not recognizing latency inactivates the premotor cortex.INDEX TERMS Near-infrared spectroscopy (NIRS), visual feedback delay latency, stress, sense of agency (SoA)

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Relationship Between Cerebral Blood Oxygenation and Electrical Activity During Mental Stress Tasks: Simultaneous Measurements of NIRS and EEG

Cited by 8 publications

References 13 publications

Fat Consumption Attenuates Cortical Oxygenation during Mental Stress in Young Healthy Adults

Fat Consumption Attenuates Cortical Oxygenation during Mental Stress in Young Healthy Adults

Stress Reduction Effects during Block-Tapping Task of Jaw in Healthy Participants: Functional Near-Infrared Spectroscopy (fNIRS) Measurements of Prefrontal Cortex Activity

Effects of Display Response Latency on Brain Activity During Device Operation

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