Effects of Tongue Pressure on Cerebral Blood Volume Dynamics: A Functional Near-Infrared Spectroscopy Study

Miyata, Hidemasa; Tani, Ryotaro; Toratani, Shigeaki; Okamoto, Tomoyoshi

doi:10.3390/brainsci12020296

Cited by 3 publications

(4 citation statements)

References 42 publications

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“…To evaluate bilateral temporal lobe areas of the brain, a total of 20 channels (CH1–CH20) were established for fNIRS signal collection [ 34 ]. The emission bands of near-infrared light were 730 nm and 850 nm, and the sampling rate was set to 20 Hz [ 35 ]. Figure 9 depicts the channel configuration for the 20 channels.…”

Section: Methodsmentioning

confidence: 99%

Changes in temporal lobe activation during a sound stimulation task in patients with sensorineural tinnitus: a multi-channel near-infrared spectroscopy study

Fan,

Gong,

Yang

et al. 2024

BioMed Eng OnLine

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Background The subjective sign of a serious pandemic in human work and life is mathematical neural tinnitus. fNIRS (functional near-infrared spectroscopy) is a new non-invasive brain imaging technology for studying the neurological activity of the human cerebral cortex. It is based on neural coupling effects. This research uses the fNIRS approach to detect differences in the neurological activity of the cerebral skin in the sound stimulation mission in order to better discriminate between the sensational neurological tinnitus. Methods In the fNIRS brain imaging method, 14 sensorineural tinnitus sufferers and 14 healthy controls listened to varied noise and quiet for fNIRS data collection. Linear fitting was employed in MATLAB to eliminate slow drifts during preprocessing and event-related design analysis. The false discovery rate (FDR) procedure was applied in IBM SPSS Statistics 26.0 to control the false positive rate in multiple comparison analyses. Results When the ill group and the healthy control group were stimulated by pink noise, there was a significant difference in blood oxygen concentration (P < 0.05), and the healthy control group exhibited a high activation, according to the fNIRS measurement data. The blood oxygen concentration level in the patient group was dramatically enhanced after one month of acupuncture therapy under the identical stimulation task settings, and it was favorably connected with the levels of THI and TEQ scales. Conclusions Using sensorineural tinnitus illness as an example, fNIRS technology has the potential to disclose future pathological study on subjective diseases throughout time. Other clinical disorders involving the temporal lobe and adjacent brain areas may also be examined, in addition to tinnitus-related brain alterations.

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Section: Methodsmentioning

confidence: 99%

Changes in temporal lobe activation during a sound stimulation task in patients with sensorineural tinnitus: a multi-channel near-infrared spectroscopy study

Fan,

Gong,

Yang

et al. 2024

BioMed Eng OnLine

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“…In addition, decreased tongue strength may be associated with cerebral blood flow in areas of the brain responsible for cognitive functions. 18 Further, decreased tongue strength can adversely affect the management of food, including swallowing, with consequences on nutritional health compounding sarcopenia and frailty. 19 20 Muscles of the tongue drive the swallowing process.…”

Section: Strengths and Limitations Of This Studymentioning

confidence: 99%

“…Maintaining muscle strength and function plays a central role in the release of BDNF, providing a potential link between muscle function and brain function. In addition, decreased tongue strength may be associated with cerebral blood flow in areas of the brain responsible for cognitive functions 18…”

Section: Introductionmentioning

confidence: 99%

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Current evidence on the association of tongue strength with cognitive decline in older adults and the known risk factors of frailty, sarcopenia and nutritional health: a scoping review protocol

Yitbarek,

Alty,

Lawler

et al. 2023

BMJ Open

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IntroductionEvidence suggests that the pathology underlying cognitive decline leading to dementia begins 15–20 years before cognitive symptoms emerge. Thus, identifying biomarkers in this preclinical phase is critically important. Age-related decrease in muscle mass and strength, a known risk factor for sarcopenia, frailty and cognitive decline, also affects the tongue. This paper describes an a priori protocol by a multidisciplinary team to address the following questions relating to adults ≥50 years of age: (1) What is the current evidence on the association of tongue strength with cognitive decline? (2) How does tongue strength associate with frailty and sarcopenia? (3) What is the association of tongue strength with nutritional health?Methods and analysisSearch terms will be identified then multiple electronic databases (PubMed, PsycINFO (Ovid), Scopus, Embase (Ovid), CINAHL and Web of Science) searched systematically for peer-reviewed articles published in English that address the following inclusion criteria: (1) human studies, (2) participants ≥50 years of age and (3) studies with tongue pressure values measured in relation to at least one of the following: frailty, sarcopenia, nutritional health, cognitive function and dementia (Alzheimer’s, vascular, frontotemporal and Lewy body). Grey literature also will be searched to identify additional studies, clinical trials and policy papers appropriate for inclusion. The search will be from database inception. After removing duplicates, two research team members will independently screen abstracts and identify articles for full-text review. The team will use a data charting tool for data extraction. Data will be analysed quantitatively and qualitatively.Ethics and disseminationThe scoping review does not require ethics approval as data will be from publicly available sources. Results will be disseminated in workshops and conferences and a peer-reviewed journal paper.

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Association Between Tongue Pressure and Prevalence of Mild Cognitive Impairment in Japan

Tanaka,

Utsunomiya,

Kato

et al. 2024

Int J Geriat Psychiatry

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ObjectiveAlthough it has been suggested that a decline in oral function is one of the potential risk factors affecting mild cognitive impairment (MCI), evidence is insufficient to draw clear conclusions. This Japanese cross‐sectional study examined the association between tongue pressure (TP) and MCI in middle‐aged and older adults aged 36–84 years.MethodsStudy participants were 1019 (368 men and 651 women). TP was evaluated using a TP measurement device. The maximum value of three measurements was used for analysis. MCI was defined as being present if a participant had a Japanese version of the Montreal Cognitive Assessment score of <26. Adjustment was made for age, smoking status, alcohol consumption, leisure‐time physical activity, body mass index, hypertension, dyslipidemia, diabetes mellitus, history of depression, number of teeth, employment, education, and household income.ResultsThe prevalence of MCI was 45.3%. Among women, compared with the lowest tertile of TP, the second and highest tertiles were significantly associated with a lower prevalence of MCI with a clear dose–response relationship; the adjusted odds ratio (95% confidence intervals) in the second and highest tertiles of TP were 0.54 (0.36–0.83) and 0.55 (0.36–0.84), respectively (p for trend = 0.005). In contrast, no statistically significant association was observed between TP and the prevalence of MCI among men.ConclusionsOur findings suggest that higher TP might be inversely associated with the prevalence of MCI in middle‐aged and older Japanese women.

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Effects of Tongue Pressure on Cerebral Blood Volume Dynamics: A Functional Near-Infrared Spectroscopy Study

Cited by 3 publications

References 42 publications

Changes in temporal lobe activation during a sound stimulation task in patients with sensorineural tinnitus: a multi-channel near-infrared spectroscopy study

Changes in temporal lobe activation during a sound stimulation task in patients with sensorineural tinnitus: a multi-channel near-infrared spectroscopy study

Current evidence on the association of tongue strength with cognitive decline in older adults and the known risk factors of frailty, sarcopenia and nutritional health: a scoping review protocol

Association Between Tongue Pressure and Prevalence of Mild Cognitive Impairment in Japan

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