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I’m interested in working with data mapped to the .sphere icosohedrons. I 
understand from a response from Doug back in 2017 that:

   waveforms = fast_vol2mat(MRIread('waveform.nii.gz'));

will give me a v x time matrix of values from my functional values.
In the case of fsaverage, I believe I can expect somewhere around 160K rows, 1 
per vertex, for each hemisphere.
I was wondering how I might be able to determine the neighbors (i.e., vertices 
connected by an edge) for any vertex v?

Thanks,
Chris

/**********************************************
* Chris McNorgan
* Assistant Professor
* Department of Psychology
* University at Buffalo,
* The State University of New York
* http://ccnlab.buffalo.edu/
* Office: 716.645.0236
* Lab: 716.645.0222
**********************************************/

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