Changes in optical properties of biological tissue can be examined by near-infrared
spectroscopy (NIRS). The relative transparency of tissues including the skull to near-infrared …

Near-infrared spectroscopy (NIRS) is a noninvasive technique for continuous monitoring of
the amounts of total hemoglobin (total-Hb), oxygenated hemoglobin,(oxy-Hb) and …

1. Introduction fNIRS is a device designed to detect changes in the concentration of
oxygenated (oxyHb) and deoxygenated (deoxyHb) haemoglobin molecules in the blood, a …

Near‐infrared spectroscopy (NIRS), a noninvasive optical technique, can measure changes
in hemoglobin (Hb) concentrations in brain tissue. Jöbsis first described the in vivo …

Optical approaches to investigate cerebral function and metabolism have long been applied
in invasive studies. From the neuron cultured in vitro to the exposed cortex in the human …

We used near infrared spectroscopy (NIRS) to investigate the vascular and metabolic
response to brain activation in human primary and adjacent secondary visual cortex. NIRS is …

In healthy human adults, cerebral concentrations of oxygenated hemoglobin ([HbO 2]) and
deoxygenated hemoglobin ([HbR]) were assessed during brain activation using near …

Brain activity is associated with changes in optical properties of brain tissue. Optical
measurements during brain activation can assess haemoglobin oxygenation, cytochrome-c …

In five healthy human subjects, near-infrared spectroscopy (NIRS) and positron emission
tomography (PET) examinations were performed simultaneously. Changes in [oxy …

Abstract Near Infrared Spectroscopy (NIRS) is an optical technique that measures tissue
absorbance of light at several wavelengths in the 700-1000 nm spectral region. From the …