Title :
Determination of the variability of fMRI responses using deconvolution analysis
Author :
Chawla, Nitin ; Biswal, Bharat
Author_Institution :
Dept. of Biomed. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
It is currently assumed that fMRI time-points are stationary i.e., signal characteristics do not change over time. In this study, time-varying signal characteristics of fMRI signal response were investigated using impulse response function. Substantial variation in the activation map was obtained for bilateral finger tapping paradigm. The proposed method can be extended to study variation between different experiments, and can also be used to detect habituations, or learning effects.
Keywords :
biomedical MRI; deconvolution; time-varying systems; transient response; bilateral finger tapping paradigm; deconvolution analysis; fMRI signal response; fMRI stationary time-points; impulse response function; time-varying signal characteristics; Biomedical engineering; Biomedical imaging; Data analysis; Deconvolution; Fingers; Magnetic heads; Magnetic resonance imaging; Neuroimaging; Radiology; Signal analysis;
Conference_Titel :
Bioengineering Conference, 2005. Proceedings of the IEEE 31st Annual Northeast
Print_ISBN :
0-7803-9105-5
Electronic_ISBN :
0-7803-9106-3
DOI :
10.1109/NEBC.2005.1431921
