Can you find any pattern in the two signals, green and blue? The blue signal is the brain wave (measured by NIRS) of a person when he is pressing some buttons (the timing of button pressing is shown i
Wavelet transform coherence (WTC) is a method for analyzing the coherence and phase lag between two time series as a function of both time and frequency (Chang and Glover 2010). Here I played with it
SVM is mostly commonly used for binary classifications. But one branch of SVM, SVM regression or SVR, is able to fit a continuous function to data. This is particularly useful when the predicted varia
Update 2021/2/27: If you find griddata3 not working, try to change griddata3 to griddata. I was asked where to get nirs2img script. Here it is. The download link is at the bottom of this article. nirs2img is to create an image file from the input data. Then theimage file can be viewed by a
xjView’s official webpage moves to https://www.alivelearn.net/xjview/ xjView is a MatLab program Jian and I wrote a few years ago to display SPM T-test images more easily. Main features include p-value slider: change p-value and display the sup
Retinotopy analysis consists two parts, one on high resolution structural images (segmentation, inflation, cut, etc), the other on functional images. structural Before you start, you need to put the structural i
For single file to single file conversion, you usually use mri_convert of freesurfer. For example mri_convert x.img y.nii Other options would be LONI Debabeler or MRICro. Here are some special cases: multiple 3D ANALYZE to a single 4D Nifti: mri_conc
As an author, when you publish paper, you pay to the publisher; As a reader, when you read paper, you pay to the publisher; This is absolutely ridiculous! The research is done using tax payer’s money and tax payers have to pay to access the pub
In local actionscript, if you have an object like: o.x = 6; o.y = -5; Then send this object to remote server using amfphp, the object becomes o = 6; o = 4294967290; This could be a bug…
Let’s say we have three tables: user, paper, userPaperRelation. user has columns id and username paper has column id and title userPaperRelation has columns userID and paperID. userID corresponds to the id in user table; paperID corresponds to
/fs/quarry/cuixu/fsl/fslmerge -t f I_???.* On my computer, it doesn’t convert to .nii file; but to a single img/hdr pair. This method won’t be used. Instead, I use freesurfer’s mri_concat now. See here.
http://www.tuxfiles.org/linuxhelp/vimcheat.html Author: Nana Långstedt < nana.langstedt at gmail.com > Working with files Vim command Action :e filename Open a new file. You can use the Tab key for automatic file name completion, just li
I use jsMath to write mathematical equations in this blog. Here is an example This is inline equation (use slash parenthesis): \(\alpha+\beta\geq\gamma=\pi\) This is one line equation (use double dollar sign \$\$…\$\$): $$\int {1\over x}\,dx =
