Functional Brain Signals: A photon counting system for brain activity monitoring
Lebid, S and O'Neill, Ray and Markham, Charles and Ward, Tomas and Coyle, S (2004) Functional Brain Signals: A photon counting system for brain activity monitoring. In: IEE Irish Signals and Systems Conference, 2004, Belfast, Northern Ireland. AbstractA simplified in vivo near infrared spectroscopy
(NIRS) system for functional brain analysis and a protocol for the
study of visual evoked potentials in the human brain is presented.
A novel NIRS system bases on a simple photon counting technique
using a CW light source (laser diode at 780 nm), fibre optodes
delivering light to the subject and from the subject to detector, a
photomultiplier tube (PMT) for high infra-red (IR) response and
the 800 MHz Gated Photon Counter/multichannel scaler (MCS) for
data acquisition. A chequerboard stimulus was used to elicit a
response signal from the visual cortex. This photon signal arising
from the cortical systems of the brain was processed to detect
features indicative of the neural processing systems involved. | Keywords: | NIR spectroscopy, brain signals, visual evoked
potentials, photon counting, biomedical signal processing |
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| Subjects: | Science & Engineering > Electronic Engineering |
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| ID Code: | 1273 |
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| Deposited By: | Dr Tomas Ward |
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| Deposited On: | 27 Feb 2009 16:12 |
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| Refereed: | Yes |
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