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scripts default iconGenerate synthetic fMRI data (Scripts) Publisher's description

This program is useful for debugging fMRI analyses and models.

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.)

System Requirements:

No special requirements.
Program Release Status: New Release
Program Install Support: Install and Uninstall

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