Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7124965 | Measurement | 2014 | 7 Pages |
Abstract
In this paper, we study key properties of commercially available HPLEDs, with a focus on the study of the brain. Of particular interest here are optical output power and available wavelengths. Furthermore, we demonstrate a lock-in amplification technique suitable for use with HPLEDs in brain studies. Based on the presented measurement technique, we conduct experimental measurements on CBF in the cortex and analyse fluctuations in blood oxygen level at different combinations of wavelengths.
Related Topics
Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Teemu Myllylä, Vesa Korhonen, Åukasz SuraźyÅski, Aleksandra Zienkiewicz, Hannu Sorvoja, Risto Myllylä,