Functional near-infrared spectroscopy study on primary motor and sensory cortex response to clenching

Shibusawa, Mami; Takeda, Tomotaka; Nakajima, Kazunori; Ishigami, Keiichi; Sakatani, Kaoru

doi:10.1016/j.neulet.2008.10.073

Cited by 36 publications

(26 citation statements)

References 26 publications

(31 reference statements)

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“…Further, our results are in accordance with previous findings, who also reported force-dependent modulation of cortical activity during isolated simple movements (Bhambhani et al, 2006; Rasmussen et al, 2007; Shibuya et al, 2008, 2014; Rupp and Perrey, 2009; Shibusawa et al, 2009; Derosiere and Perrey, 2012). However, we did not see significant hemodynamic response alterations in M1 when comparing different barbell load levels which contrasts with previous studies (Shibuya et al, 2008, 2014; Shibusawa et al, 2009; Derosiere and Perrey, 2012; Derosière et al, 2014). Even though we can only speculate about these divergent findings, it seems reasonable to assume that especially during complex whole body movements extra-cortical brain regions such as the cerebellum might play a pivotal role.…”

Section: Discussionsupporting

confidence: 94%

Hemodynamic Response Alterations in Sensorimotor Areas as a Function of Barbell Load Levels during Squatting: An fNIRS Study

Kenville

Maudrich

Carius

et al. 2017

Front. Hum. Neurosci.

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Functional near-infrared spectroscopy (fNIRS) serves as a promising tool to examine hemodynamic response alterations in a sports-scientific context. The present study aimed to investigate how brain activity within the human motor system changes its processing in dependency of different barbell load conditions while executing a barbell squat (BS). Additionally, we used different fNIRS probe configurations to identify and subsequently eliminate potential exercise induced systemic confounders such as increases in extracerebral blood flow. Ten healthy, male participants were enrolled in a crossover design. Participants performed a BS task with random barbell load levels (0% 1RM (1 repetition maximum), 20% 1RM and 40% 1RM for a BS) during fNIRS recordings. Initially, we observed global hemodynamic response alterations within and outside the human motor system. However, short distance channel regression of fNIRS data revealed a focalized hemodynamic response alteration within bilateral superior parietal lobe (SPL) for oxygenated hemoglobin (HbO2) and not for deoxygenated hemoglobin (HHb) when comparing different load levels. These findings indicate that the previously observed load/force-brain relationship for simple and isolated movements is also present in complex multi-joint movements such as the BS. Altogether, our results show the feasibility of fNIRS to investigate brain processing in a sports-related context. We suggest for future studies to incorporate short distance channel regression of fNIRS data to reduce the likelihood of false-positive hemodynamic response alterations during complex whole movements.

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Section: Discussionsupporting

confidence: 94%

Hemodynamic Response Alterations in Sensorimotor Areas as a Function of Barbell Load Levels during Squatting: An fNIRS Study

Kenville

Maudrich

Carius

et al. 2017

Front. Hum. Neurosci.

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“…Some researchers simply use a standard framework for optode placement (Jasper, 1958;Jurcak et al, 2007) the reliability of which has been called into question. Others obtain structural cranio-cerebral correspondence in a subset or all subjects using MRI to locate cortical structures under a set of NIR channels, in an attempt to improve data quality and reliability Fujiwara et al, 2004;Hatakenaka et al, 2007;Hirth et al, 1997;Miyai et al, 2001Miyai et al, , 2002Miyai et al, , 2003Murata et al, 2002;Nagamitsu et al, 2006;Okamoto et al, 2004;Sakatani et al, 2003;Sato et al, 2007;Shibusawa et al, 2009;Suzuki et al, 2004Suzuki et al, , 2008Toronov et al, 2001). If costs preclude the latter, our opinion is that the 3D spatial co-ordinates of NIR channel positions be acquired (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…There is evidence to suggest that the haemodynamic response can be modulated by the frequency (Kuboyama et al, 2004(Kuboyama et al, , 2005Obrig et al, 1996a), intensity (Shibusawa et al, 2009;Shibuya et al, 2008) and complexity (Holper et al, 2009) of the motor task or stimulus.…”

Section: Correlation Between Fnirs Data and Other Functional Neuroimamentioning

confidence: 99%

Assessment of the cerebral cortex during motor task behaviours in adults: A systematic review of functional near infrared spectroscopy (fNIRS) studies

et al. 2011

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“…What kind of neurophysiological changes happens during clenching (brain activation, excitability changes, and modulation of reflex)? Articles ranged on topics of mastication, voluntary teeth clenching, positron‐emission tomography, functional MRI, and transcranial magnetic stimulation and motor evoked potentials …”

Section: What Is Known About Mouthguards and Performance Enhancement?mentioning

confidence: 99%

Mouthguards and their use in sports: Report of the 1st International Sports Dentistry Workshop, 2016

Lloyd

Nakamura²,

Maeda

et al. 2017

Dental Traumatology

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There appears to be much confusion or misinformation worldwide regarding mouthguards and their use in sports. In an effort to clarify where the international dental community stands on mouthguards and mouthguard research, the workshop looked at some important questions. The goal was to one day formulate consensus statements related to these questions, which will be based on current scientific evidence-based research, to motivate the international community of the importance of dentally fitted laminated mouthguards and the wearing of them by athletes of all sports. There are only five sports in the United States that require the use of mouthguards. If, through workshops such as this, the importance of wearing dentally fitted laminated mouthguards can be demonstrated, then more sports may require their athletes to wear them. K E Y W O R D Sconcussion prevention, mouthguards, performance enhancement, sports dentistry, sportsguards

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Functional near-infrared spectroscopy study on primary motor and sensory cortex response to clenching

Cited by 36 publications

References 26 publications

Hemodynamic Response Alterations in Sensorimotor Areas as a Function of Barbell Load Levels during Squatting: An fNIRS Study

Hemodynamic Response Alterations in Sensorimotor Areas as a Function of Barbell Load Levels during Squatting: An fNIRS Study

Assessment of the cerebral cortex during motor task behaviours in adults: A systematic review of functional near infrared spectroscopy (fNIRS) studies

Mouthguards and their use in sports: Report of the 1st International Sports Dentistry Workshop, 2016

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