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Reliable Fast (20 Hz) Acquisition Rate by a TD fNIRS Device: Brain Resting-State Oscillation Studies.

Rebecca ReIleana PirovanoDavide ContiniCaterina AmendolaLetizia ContiniLorenzo FrabasilePietro LevoniAlessandro TorricelliLorenzo Spinelli
Published in: Sensors (Basel, Switzerland) (2022)
A high power setup for multichannel time-domain (TD) functional near infrared spectroscopy (fNIRS) measurements with high efficiency detection system was developed. It was fully characterized based on international performance assessment protocols for diffuse optics instruments, showing an improvement of the signal-to-noise ratio (SNR) with respect to previous analogue devices, and allowing acquisition of signals with sampling rate up to 20 Hz and source-detector distance up to 5 cm. A resting-state measurement on the motor cortex of a healthy volunteer was performed with an acquisition rate of 20 Hz at a 4 cm source-detector distance. The power spectrum for the cortical oxy- and deoxyhemoglobin is also provided.
Keyphrases
  • resting state
  • functional connectivity
  • high efficiency
  • magnetic resonance imaging
  • low grade
  • computed tomography
  • loop mediated isothermal amplification
  • brain injury
  • cerebral ischemia