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While biomedical optical sensing technology is getting mature, it quickly and widely penetrates into wearable devices, medical devices, or brain energy analyzers. Its noninvasive measurement makes it rapidly growth today, and near infrared spectroscopy (NIRS) is a typical case. In previous researches, a self-developed EEG-NIRS system is succeeded in monitoring the brain activity changes. This system...
A non-invasive and accuracy medical measurement method is important in homecare systems. Near-infrared spectroscopy (NIRS) is one of them, and widely used to acquire the biomedical information. Near-infrared light is used to penetrate into the tissue and to indicate the oxygen concentration. To provide accuracy and meaningful NIRS information is the aim of this article. Two major NIRS disturbances...
Olfactory impairment is a characteristic of early stage of Parkinson's disease (PD). Over 95% of PD patients present with severe olfactory loss. Almost all olfactory tests are subjective. Therefore, olfactometry cannot be performed unless the patient himself/herself notices olfactory impairment. When the condition of the patients was diagnosed as a PD, they had completely lost their sense of olfaction...
Diffuse optical multipatch technique is used to assess spatial variations in absorption and scattering in biological tissue, by monitoring changes in the concentration of oxyhemoglobin and deoxyhemoglobin. In our preliminary study, the temporal tracings of tissue oxygenation are measured using diffuse optical multipatch measurement and a venous occlusion test, employing normal subjects and ICU patients...
To investigate the relationship between neuronal activity and hemodynamics, we carried out an NIRS study (near-infrared spectroscopy) to measure the regional changes of hemoglobin concentration associated with cortical activation in the primary somatosensory cortex (SI) to electrical stimuli. We examined the hemodynamic evoked responses to the electrical stimuli applied on the fingers (right thumb...
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