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Scale-space analysis of event-related fMRI data using higher harmonics

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2 Author(s)
Kumar, A. ; Sch. of EEE, Singapore Polytech., Singapore, Singapore ; Rajapakse, J.C.

Scale-space analysis is able to detect activation at various scales from a functional MR brain slice. Though scale space analysis has been used in functional MRI, its use has been limited to periodic block-based experiments. This paper extends scale space analysis to event-related experiments. Furthermore, the method uses higher harmonics of stimulus frequency, which contain considerable energy especially in periodic event-related data. The use of these harmonics results in a chi-square random field of higher degree and improves accuracy in activation detection.

Published in:

Defense Science Research Conference and Expo (DSR), 2011

Date of Conference:

3-5 Aug. 2011