By Topic

Involvement of region-specific HRF in classical analysis of event-related fMRI data

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

4 Author(s)
Barton, M. ; CEITEC MU, Masaryk Univ., Brno, Czech Republic ; Mikl, M. ; Marecek, R. ; Havlicek, M.

The shape of hemodynamic response function (HRF) as it is measured by fMRI is influenced by many factors. Even the time course of neuronal activity by itself does not necessarily trace the time course of fMRI experimental stimulation. The analysis of fMRI data based on assumption of commonly considered (fixed) HRF shape may therefore be mismatched due to inaccurate modeling. Therefore, to formulate more accurate models, by using estimated region-specific HRF for particular volume elements of the brain, may be beneficial. The aim of this paper is to verify the methodology, which involves HRF estimations, in comparison to the classical form of fMRI data analysis. For estimations of HRF was chosen regression method with a modified set of FIR basis functions.

Published in:

Systems, Signals and Image Processing (IWSSIP), 2012 19th International Conference on

Date of Conference:

11-13 April 2012