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
Two Ways to Apply a Formula to an Entire Column in Excel This small trick can be handy if you have a lot of rows. The most commonly used method – dragging down – will be too time consuming in this case.
Description: The subject is myself. I did a simple finger tapping task. I continuously tapped my right hand on the table for 10s, then rest for 20s. Then repeat this tapping-rest cycle for 20 times. NIRS signals were recorded by Hitachi ETG-4000. The
In one column of your excel your date is formatted as “03/06/2001”. How do you format it to “2001 Mar 6”? See: Reference: http://office.microsoft.com/en-us/excel-help/format-a-date-the-way-you-want-HA102809474.aspx
Assume you have two columns in an Excel sheet. Column A contains some names, Column B also contains some names, some of which are duplicates from A. You want to know which ones are unique, and you want to create a column C where only unique names are
We have an interesting challenge in one of our projects. In our neuroimaging experiment, we need the participant to play a computer game while his brain is scanned (using a NIRS device ETG 4000 in this case). As you can imagine, we need to start the
A recent analysis on NIH grants. On average there are 4,500 grants awarded each month. July-September is the grant season. For more detail, check out “NIH awards 4500 grants each month, peaks in summer” NIH Awards 4500 Grants per Month Up
Update: a free online tool where you can paste image directly: https://alivelearn.net/?p=2047 I get a picture and would like to copy the text in the picture. But since there are a lot of text, I do not want to type. So I wish there is a tool which ca
VMWare Player is a great free tool if you want to run multiple operating systems on one computer. For example, you may have a Mac but need to run a few programs on Windows. Instead of purchasing a new Windows computer, you can simply use VMWare Playe
