Relation between mental stress-induced prefrontal cortex activity and skin conditions: A near-infrared spectroscopy study

Tanida, Masahiro; Katsuyama, Masako; Sakatani, Kaoru

doi:10.1016/j.brainres.2007.09.058

Cited by 116 publications

(108 citation statements)

References 34 publications

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“…18 19 Positioning was similar to the midpoint between electrode positions Fp1/F3 (left) and Fp2/F4 (right) of the international electro-encephalographic 10-20 system. 20 Near-infrared light absorption was measured with a time resolution of 0.1 s; the pre-stimulation baseline was determined as the mean over 10 s immediately before the stimulation period; the post-stimulation baseline was determined as the mean over 40-50 s after the task period; and data were fit between the two baselines. We tried to exclude motion artefacts by closely monitoring for any artefact-evoking body movements such as neck movements or strong biting, and by instructing the subjects to avoid such movements during NIRS measurements.…”

Section: Heart Rate Variabilitymentioning

confidence: 99%

Effects of Electroacupuncture to the Trigeminal Nerve Area on the Autonomic Nervous System and Cerebral Blood Flow in the Prefrontal Cortex

et al. 2017

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Background The autonomic nervous system and trigeminal nerve are involved in adjusting flow through diverging cerebral arteries in the prefrontal cortex. The purpose of this study was to examine the effect of 100 Hz electroacupuncture (EA) to the trigeminal nerve area on cerebral blood flow and autonomic nervous system function. Method This was a randomised crossover study of 16 healthy volunteers who were assigned to an EA or control group. Stimulation (in the EA group) was performed five times, each after 1 min of rest. Needles were inserted at the inner edge of the eyebrows and 1 cm from the front hairline midpoint. We used high-frequency (HF) and lowfrequency (LF) components of heart rate (HR) variability to assess autonomic nervous system function. HF and LF/ HF ratio were taken as indicators of parasympathetic and sympathetic nervous system activity, respectively. We measured cerebral blood flow using a two-channel nearinfrared spectroscope. Results In the EA group, HR significantly decreased (p=0.004) and HF significantly increased (p=0.006) relative to baseline. By contrast, there were no significant changes in HR or HF within the control group (p>0.05). Accordingly, HR tended to be lower (p=0.087) and HF greater (p=0.071) in the EA group versus the control group. There were no significant differences in LF/HF ratio within/between groups. Compared with the control group, cerebral blood flow was significantly greater in the left (p=0.048) and right (p=0.016) prefrontal cortex in the EA group. Conclusions Delivery of 100 Hz EA to the trigeminal nerve area reduces HR and increases parasympathetic nervous activity and cerebral blood flow.

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Section: Heart Rate Variabilitymentioning

confidence: 99%

Effects of Electroacupuncture to the Trigeminal Nerve Area on the Autonomic Nervous System and Cerebral Blood Flow in the Prefrontal Cortex

et al. 2017

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“…In addition, extreme room conditions may influence subject"s comfort and performance. Some investigators report their laboratory temperature (22o-24o) and humidity conditions (40%-50%) and methods of ventilation (Tanida et al, 2007;Kudo et al, 2008). In general, experiments should be conducted at room temperature.…”

Section: Room Conditionsmentioning

confidence: 99%

Quality control and assurance in functional near infrared spectroscopy (fNIRS) experimentation

et al. 2010

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Abstract. Functional near infrared spectroscopy (fNIRS) is a rapidly developing neuroimaging modality for exploring cortical brain behaviour. Despite recent advances, the quality of fNIRS experimentation may be compromised in several ways. Firstly, by altering the optical properties of the tissues encountered in the path of light. Secondly, through adulteration of the recovered biological signals (noise). And finally, by modulating neural activity. Currently, there is no systematic way to guide the researcher regarding these factors when planning fNIRS studies. Conclusions extracted from fNIRS data will only be robust if appropriate methodology and analysis in accordance with the research question under investigation are employed. In order to address these issues and facilitate the quality control process, a taxonomy of factors influencing fNIRS data have been established. For each factor, a detailed description is provided, and previous solutions are reviewed. Finally, a series of evidence-based recommendations are made with the aim of improving consistency and quality of fNIRS research.

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“…Significant positive relationships have been found between LIA and somatic and psychological stress responses. [16][17][18][19]26 A number of studies have demonstrated correlations between electrical neural activity and change in blood oxygenation measured by NIRS. Simultaneous recording and analysis of NIRS and visual-evoked potential signals in humans has indicated that there is a strong linear correlation between hemodynamic changes and evoked potential amplitude.…”

mentioning

confidence: 99%

Correlation between asymmetry of spontaneous oscillation of hemodynamic changes in the prefrontal cortex and anxiety levels: a near-infrared spectroscopy study

et al. 2014

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Abstract. According to the valence asymmetry hypothesis, the left/right asymmetry of prefrontal cortex (PFC) activity is correlated with specific emotional responses to mental stress and personality traits. Here, we evaluated the relation between emotional state and asymmetry in PFC activity at rest by using near-infrared spectroscopy (NIRS). We measured spontaneous oscillation of oxyhemoglobin (oxy-Hb) concentrations in the bilateral PFC at rest in normal adults employing two-channel NIRS. In order to analyze left/right asymmetry of PFC activity at rest, we calculated the laterality index at rest (LIR) (see text). We investigated the correlation between the LIR and anxiety levels evaluated by the State-Trait Anxiety Inventory (STAI) test. We found that the right PFC was more active at rest than the left PFC, corresponding to a higher anxiety level measured by the STAI; that is, subjects with right-dominant activity at rest showed higher STAI scores, while those with leftdominant oxy-Hb changes at rest showed lower STAI scores. Aging had no significant effect on the relation. The present results obtained by NIRS are consistent with the valence asymmetry hypothesis. We emphasize NIRS may be a useful tool for objective assessment of anxiety levels.

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Relation between mental stress-induced prefrontal cortex activity and skin conditions: A near-infrared spectroscopy study

Cited by 116 publications

References 34 publications

Effects of Electroacupuncture to the Trigeminal Nerve Area on the Autonomic Nervous System and Cerebral Blood Flow in the Prefrontal Cortex

Effects of Electroacupuncture to the Trigeminal Nerve Area on the Autonomic Nervous System and Cerebral Blood Flow in the Prefrontal Cortex

Quality control and assurance in functional near infrared spectroscopy (fNIRS) experimentation

Correlation between asymmetry of spontaneous oscillation of hemodynamic changes in the prefrontal cortex and anxiety levels: a near-infrared spectroscopy study

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