Isosbestic point

Definition: An isosbestic point is the wavelength in which two or more chromophores have the same absorption coefficient. The isosbestic point of interest in NIRS is for oxygenated and deoxygenated hemoglobin, and is at ~800 nm.

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References:

https://doi.org/10.1016/j.neuroimage.2013.05.004

Related terms: Oxygenated Hemoglobin, Absorption Spectrum, Absorption Coefficient