Computational Sensorimotor Systems Lab:
Jonathan Z. Simon: Resources
Data Clearinghouse
Unfortunately, there is not yet any universally agreed upon format or public repository to archive complex MEG data. Nevertheless, some of our projects have their relevant data available to all interested parties, indexed here.
Sqdproject 3.0.1 beta (Updated 09/06/16; uploaded 04/10/18)
Description: Matlab routines to read and write MEG160 “sqd” files
This version is for use with the updated UMD-KIT system (located at the MNC) only. It correctly reads 16-bit MEG recording values for this system, but not for most other KIT systems.
More Info: README
Download (then unzip and add folder to Matlab path): sqdproject3.0.1.beta.zip
MEG Topographic Plotting function for Matlab (Updated 06/23/2016)
Description: A Matlab function to plot MEG topographic head-maps of magnetic field distributions.
File: megtopoplot.m
This version is 1.3. The Matlab “help” description is here.
Denoising (Updated 09/19/2011)
Description: Denoising algorithms and Matlab implementation
Three Denoising algorithms by de Cheveigné and Simon: TSPCA, SNS, and DSS.
See the de Cheveigné site for Matlab implementation, with examples.
See Publications for papers by de Cheveigné and Simon describing the algorithms.
General sqd to sqd Denoising Instructions
Previously Distributed Sqdproject 3.0 beta (Updated 02/14/10)
Description: Matlab routines to read and write MEG160 “sqd” files
Multiple Fixes and Additions since the last version, including:
• Now properly reads sqd epoch files
• New functions sqdgettriggers() and sqdmakeepochs() to easily read triggers & create epoch files
• OutputGain bug fixed
More Info: README
Download (then unzip and add folder to Matlab path): sqdproject3.0beta.zip
If anyone can help us out with better documentation we would truly appreciate it (as might many new users). Please contact Jonathan Simon.
Previously Distributed Sqdproject (Updated 12/11/2008)
Updated to fix a problem with the putdata.m method which meant that one could not properly write to an output file..
Download: sqdproject2.2beta.zip
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