Signal and image processing techniques for functional near-infrared imaging of the human brain

Vladislav Y. Toronov, Xiaofeng Zhang, Monica Fabiani, Gabriele Gratton, Andrew G. Webb

Research output: Contribution to journalConference articlepeer-review


Near-infrared spectro-imaging (NIRSI) is a quickly developing method for the in-vivo imaging of biological tissues. In particular, it is now extensively employed for imaging the human brain. In this non-invasive technique, the information about the brain is obtained from the analysis of spatial light bundles formed by the photons traveling from light sources to detectors placed on the surface of the head. Most significant problems in the functional brain NIRSI are the separation of the brain information from the physiological noise in non-cerebral tissues, and the localization of functional signals. In this paper we describe signal and image processing techniques we developed in order to measure two types of functional cerebral signals: the hemodynamic responses, and neuronal responses.

Original languageEnglish (US)
Article number03
Pages (from-to)117-124
Number of pages8
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
StatePublished - 2005
EventComplex Dynamics and Fluctuations in Biomedical Photonics II - San Jose, CA, United States
Duration: Jan 22 2005Jan 25 2005


  • Brain
  • Functional imaging
  • MRI
  • Near-infrared

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging


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