alexa Near infrared spectroscopy (NIRS): a new tool to study hemodynamic changes during activation of brain function in human adults.
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): Villringer A, Planck J, Hock C, Schleinkofer L, Dirnagl U

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Abstract In healthy human adults, cerebral concentrations of oxygenated hemoglobin ([HbO2]) and deoxygenated hemoglobin ([HbR]) were assessed during brain activation using near infrared spectroscopy (NIRS). Measurements were made either in the frontal cortex (n = 10) during performance of cognitive tasks or in the occipital cortex (n = 6) during visual stimulation (flash-light exposure, picture observation). The typical findings during brain activation were an increase in [HbO2] and a decrease in [HbR]. We demonstrate that these findings are not due to alterations in skin blood flow. NIRS is a simple bedside technique for the assessment of hemodynamic alterations accompanying brain activation.
This article was published in Neurosci Lett and referenced in Biochemistry & Analytical Biochemistry

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