Thomas WJ Ash1, T
1Wolfson Brain Imaging Centre,
The
first applications of real time fMRI used voxel intensity averaging over a
ROI to provide feedback, whereas recent work has shown that machine learning
tools may improve performance. We
conduct a comparison between the two techniques, and find that support vector
machines (SVM) outperform averaging over a ROI no matter how restricted an
ROI we use. Further to this, we find
that SVM performance does not decrease as sharply as ROI averaging when block
length is decreased.