Generate synthetic fMRI data 1.0

Date Added: May 10, 2013 | Visits: 215

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This program is useful for debugging fMRI analyses and models.Given a set of voxel location (sample file provided), experimental design matrix, and a desired signal-to-noise ratio, this program generates a set of synthesized voxel activations.Each experimental covariate (which can be activated to varying degrees during each trial, as specified in the design matrix) is assigned a single radial basis function. The basis function's center is chosen uniformly within the confines of the specified brain, and the width is also chosen uniformly. (Note: you can associate multiple radial basis functions with each covariate by giving each covariate multiple columns in the design matrix.)The synthesized brain image for each trial is a weighted combination of the basis functions for the sources active during that trial, plus zero-mean Gaussian noise. (The standard deviation of the Gaussian noise is controlled via the SNR parameter.)

Requirements: No special requirements

Platforms: Matlab

Keyword: Associate, Basis, Brain, Chosen, Confines, Multiple, Radial, Uniformly, Width

Users rating: 0/10

License: Shareware

Size: 81.92 KB

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