By Topic

Multi-channel Near-Infrared Spectroscopy (NIRS) system for noninvasive monitoring of brain activity

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Hemmati, N. ; Fac. of Eng., Univ. of Tehran, Tehran, Iran ; Setarehdan, S.K. ; Ahmadi Noubari, H.

Near Infrared Spectroscopy is a noninvasive optical method to monitor hemodynamic activity in tissue using light in the range of 600 to 900nm. Various techniques and devices have been developed to utilize this method in a variety of medical fields such as, neuroscience, monitoring of newborn brain, muscle physiology and brain computer interface (BCI). In this paper we present design and implementation of a dual wavelength, multi-channel, continuous wave near infrared brain imager. The aim of this design is to produce a miniaturized, affordable, negligibly intrusive system that can monitor hemodynamic response of prefrontal cortex activity. The system consists of a sensor pad, a control board, a battery, and a data acquisition (DAQ) card. DAQ card acquires and digitize data and sends it to a computer for displaying the temporal and spatial information in real time as concentration changes in oxy-hemoglobin (HbO2) and deoxy-hemoglobin (Hb). In addition the DAQ provides control signals to the control board. To test the system performance, experiments have been conducted with a static phantom that simulates optical properties of human brain tissue and changes in Hb and HbO2 concentrations.

Published in:

Biomedical and Health Informatics (BHI), 2012 IEEE-EMBS International Conference on

Date of Conference:

5-7 Jan. 2012