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![Novel imaging technologies for genetic diagnoses in the inborn errors of metabolism](https://image.oaes.cc/b2a88ed9-8a0e-42e8-b26a-91da919f6426/3764.fig.3.jpg)
Figure 3. Left: the NIRS apparatus; Middle: the data-capturing device; Right: NIRS cap (NIRx NIRSPort2 Wireless system) containing sources (red marks) and detectors (blue marks) are placed on the participants’ head (A); light enters the tissue from location of source and backscattered photons are detected at the detector site (B). The detected light intensity carries information about changes in oxy-hemoglobin and deoxy-hemoglobin. NIRS: near infrared spectroscopy