Features
Here is a list of feature of rfxplot:
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Plot types: bar graphs of effect sizes, fitted responses, event-related BOLD responses (aka time courses or peri-stimulus time histograms).
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2-stage voxel selection process
- Define a search volume based on a significant cluster in a random effects analysis (second level analysis).
- Select either all voxels in that search volume or find individual peak voxels in it (and define single-subject spheres around them).
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Select data from different image types (e.g. beta, con-images) from a subject's 1st level analysis.
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Select images based on image description strings, not filenames. This way rfxplot can cope with different first-level design matrices. It requires, however, that the same event must have identical names.
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Split regressors and/or parametric modulators into different bins based on:
- Value or percentile ranges of a parametric modulators (e.g. trials with short, medium, and long reaction time).
- Trial number (split the effect sizes into first and second half).
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Split the sample into different groups or exclude some (outlying) subjects.
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Plot effect as bars, dots, or connected dots with error bars.
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Data can be plotted as contrast or parameter estimates or as percent signal change.
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Configure error bars as standard deviation (sd), standard error of the mean (sem), or 90% confidence interval (ci).
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Many configuration options for filtering and adjusting the extracted time series (for event-related BOLD time courses or splitting regressors into different bins).
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For fitted responses and event-related BOLD time courses, plot errors as lines or as semi-transparent areas.
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Plot the data in the SPM Graphics window or in another MATLAB figure (useful for creating compound figures for publications).
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Fit a simple regression model to the effect sizes extracted from the subjects (e.g. for testing and visualizing a linear increase in activation across different task conditions); currently available regression models: linear, quadratic, exponential, logarithmic.