fNIRS channel quality is gated by cross-wavelength correlation thresholds

Evidence

We used a 4 × 4 montage of 8 sources and detectors (24 channels) in each hemisphere (Fig. 1d ), which covered the auditory and somatosensory regions of the brain. Sources and detectors were separated by 3 cm. Data in each channel were pre-processed to remove ‘glitches’ due to head movements and ‘good’ channels were identified by a significant cross-correlation (r > 0.75) between the data for the two wavelengths. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4292