Linked Life Data

20494609

Source:http://linkedlifedata.com/resource/pubmed/id/20494609

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2010-8-5
pubmed:abstractText
Diffuse optical imaging uses light to provide a surrogate measure of neuronal activation through the hemodynamic responses. The relative low absorption of near-infrared light enables measurements of hemoglobin changes at depths reaching the first centimeter of the cortex. The rapid rate of acquisition and the access to both oxy and deoxy-hemoglobin leads to new challenges when trying to uncouple physiology from the signal of interest. In particular, recent work provided evidence of the presence of a 1/f noise structure in optical signals and showed that a general linear model based on wavelets can be used to decorrelate the structured noise and provide a superior estimator of response amplitude when compared with conventional techniques. In this work the wavelet techniques are extended to recover the full temporal shape of the hemodynamic responses. A comparison with other models is provided as well as a case study on finger-tapping data.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1361-8423
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Elsevier B.V. All rights reserved.
pubmed:issnType
Electronic
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
606-16
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Wavelet-based estimation of the hemodynamic responses in diffuse optical imaging.
pubmed:affiliation
Ecole de Technologie Supérieure, Département de Génie Electrique, 1100 rue Notre-Dame ouest, Montréal, Québec, Canada H3C 1K3. jmlina@ele.etsmtl.ca
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't