Publications using the OxyMon
Case report: Endurance electrical stimulation training improves skeletal muscle oxidative capacity in chronic spinal cord injury
Objective To describe the use of a novel neuromuscular electrical stimulation (NMES) endurance exercise protocol and its effects on skeletal muscle oxidative capacity. Design Case report, pre/post intervention. Setting University-based trial. …
Faster pulmonary oxygen uptake kinetics in children vs adults due to enhancements in oxygen delivery and extraction
This study aimed to examine if the faster pulmonary oxygen uptake (VO2p) phase 2 in children could be explained by increased O 2 availability or extraction at the muscle level. For that purpose, O 2 availability and extraction were assessed using …
Firefighters muscular recovery after a heavy work bout in the heat
Occasionally firefighters need to perform very heavy bouts of work, such as smoke diving or clearing an accident site, which induce significant muscle fatigue. The time span for muscular recovery from such heavy work is not known. The purpose of this …
Fusion of fNIRS and fMRI data: Identifying when and where hemodynamic signals are changing in human brains
In this study we implemented a new imaging method to fuse functional near infrared spectroscopy (fNIRS) measurements and functional magnetic resonance imaging (fMRI) data to reveal the spatiotemporal dynamics of the hemodynamic responses with high …
Investigation of frontal lobe activation with fNIRS and systemic changes during video gaming
Frontal lobe activation caused by tasks such as videogames can be investigated using multichannel near-infrared spectroscopy (fNIRS), sometimes called optical topography. The aims of this study are to investigate the effects of video gaming (fighting …
Long-term enhancement of brain function and cognition using cognitive training and brain stimulation
Noninvasive brain stimulation has shown considerable promise for enhancing cognitive functions by the long-term manipulation of neuroplasticity [1-3]. However, the observation of such improvements has been focused at the behavioral level, and …
Multimodal integration of fNIRS, fMRI and EEG neuroimaging
Investigating human brain function can be improved byemploying a multimodal neuroimaging approach. The integrationof different non-invasive electrophysiological (e.g., electroenceph-alography-EEG and magnetoencephalography) and haemodynamic(e.g., …
Muscle, prefrontal, and motor cortex oxygenation profiles during prolonged fatiguing exercise
This study aimed to compare changes in skeletal muscle, prefrontal (PFC), and motor (MC) cortex hemodynamics during prolonged (i.e., 4-h) fatiguing whole-body exercise using multichannel near-infrared spectroscopy (NIRS). Ten subjects completed three …
Music improves verbal memory encoding while decreasing prefrontal cortex activity: An fNIRS study
Listening to music engages the whole brain, thus stimulating cognitive performance in a range of non-purely musical activities such as language and memory tasks. This article addresses an ongoing debate on the link between music and memory for words. …
Near-infrared spectroscopy during exercise and recovery in children with juvenile dermatomyositis
Introduction: We hypothesized that microvascular disturbances in muscle tissue play a role in the reduced exercise capacity in juvenile dermatomyositis (JDM). Methods: Children with JDM, children with juvenile idiopathic arthritis (clinical …
Oxygen Consumption in Cycling: The Relationship between Whole Body Pulmonary O2 Consumption and Muscle Oxygenation in Different Muscles During Constant-Load Cycling
Introduction: Oxygen consumption during prolonged cycling exercise has been extensively studied at different work rates and durations, but with the focus primarily on pulmonary oxygen consumption (pVO2). The purpose of this study was to use …
Peak oxygen uptake and regional oxygenation in response to a 10-day confinement to normobaric hypoxia
We investigated the effect of hypoxic acclimatization per se, without any concomitant influence of strenuous physical activity on muscle and cerebral oxygenation. Eight healthy male subjects participated in a crossover-designed study. In random …
Prefrontal cortex activation during story encoding/ retrieval: A multi-channel functional near-infrared spectroscopy study
Encoding, storage and retrieval constitute three fundamental stages in information processing and memory. They allow for the creation of new memory traces, the maintenance and the consolidation of these traces over time, and the access and recover of …
Repeated-sprint performance and vastus lateralis oxygenation: Effect of limited O2 availability
This study examined the influence of muscle deoxygenation and reoxygenation on repeated-sprint performance via manipulation of O2 delivery. Fourteen team-sport players performed 10 10-s sprints (30-s recovery) under normoxic (NM: FIO2 0.21) and acute …
Skeletal muscle metabolism in endurance athletes with near-infrared spectroscopy
Purpose: To determine whether near-infrared spectroscopy (NIRS) measurements of muscle mitochondrial function could detect the expected differences between endurance-trained athletes (n = 8) and inactive subjects (n = 8). Methods: Muscle oxygen …
Tissue deoxygenation kinetics induced by prolonged hypoxic exposure in healthy humans at rest
This study aimed to investigate the effects of sustained hypoxic exposure on cerebral and muscle oxygenation and cardiorespiratory function at rest. Eleven healthy subjects inhaled a normobaric hypoxic (FiO2=0.12) or normoxic (FiO2=0.21) gas mixture …
Towards Biometric Person Identification using fNIRS
We investigate the potential of using fNIRS signals for biometric person identification. Independent sessions for training and testing have been recorded using 8 channels of frontal fNIRS. We extract logarithmic power spectral densities as features …
Exercise thermoregulatory responses following a 28-day sleep-high train-low regimen
The potentiated exercise-sweating rate observed during acute hypoxia is diminished after a sleep-high trainlow (SH-TL) regimen. We tested the hypothesis that this attenuation of the sweating response after SH-TL is compensated for by an increase in …
Effects of Aging on Cerebral Oxygenation during Working-Memory Performance: A Functional Near-Infrared Spectroscopy Study
Working memory is sensitive to aging-related decline. Evidence exists that aging is accompanied by a reorganization of the working-memory circuitry, but the underlying neurocognitive mechanisms are unclear. In this study, we examined aging-related …
Measuring workload using a combination of electroencephalography and near infrared spectroscopy
The ability to continuously monitor workload in a real-world environment would have important implications for the offline design of human machine interfaces as well as the real-time improvement of interaction between humans and machines. We explored …