SPM NeuroSynth scraper

Scrape activation information from NeuroSynth.org for SPM8 first- or second-level results.

Description

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%Lookup voxel activations on neurosynth.org
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%%REQUIRED: SPM(only tested on 8) must be installed.
%You can use this script in two ways:
%1) Pass a filename of an analyze-format statmap, or
%2) Estimate an SPM model and load it into the workspace with the "Results" button
%(in order to produce an xSPM structure)
%The script will then scrape neurosynth.org for information about your activations
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%OPTIONS
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%%-If you pass the string 'savedata', a csv will be saved for each coordinate
%found in the neurosynth database.
%%-If you pass the string 'search', the program will search for activations
%in a "searchlight" centered on the given voxel. The default search is to
%test all voxels that share a face with the voxel in question; pass a
%number after the 'search' string to modify the extent of the search (i.e.,
%change the radius of the "searchlight". Beware of greatly diminishing returns,
%both in terms of relevant information and computing time, with higher
%radii (1-3 is probably best).
%-(old, lame search algorithm) If you pass the string 'jitter', coordinates without activation data on Neurosynth will be jittered up to
%5 voxels in all dimensions until information is returned.
%
%example 1A:
%spm_neurosynth(xSPM);
%example 1B:
%spm_neurosynth('my_statmap.hdr'); note that img/nii also work
%example 2:
%spm_neurosynth(xSPM,'savedata');
%example 3:
%spm_neurosynth(xSPM,'savedata','search',1);
%example 4(not really worth using...):
%spm_neurosynth(xSPM,'savedata','jitter')
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%By Drew Linsley (thanks to Jordan Theriault for suggestions + Sylvain Fiedler for the csv routine)
%Updated 1/21/13 -- added functionality for statmaps in analyze format
%Updated 1/18/13 -- "searchlight" routine added to find local voxel information
%Updated 12/2/12 -- bug fix
%Updated 11/17/12 -- added 'jitter' routine
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Acknowledgements

Cell2csv inspired this file.

• Required Products: MATLAB
• MATLAB release: MATLAB 7.9 (R2009b)
• Other requirements: SPM8, internet connection