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
I need to create a banner ad for Stork’s advanced feature (NIH grant database English/Chinese bilingual version). I wish the ad has two images showing one after the other, and repeat every 3 seconds. In the end, the image is like this: So how t
If you create a CSV file and the file contains some characters such as ü or ş, then you will find the characters are not displayed correctly in Excel. This is because the default coding of Excel is not UTF-8. To force Excel to use UTF-8, we need to a
Back in August, 2013 I purchased a Dell computer (OptiPlex 9010 Minitower) which has been working very well. It has Windows 7 installed. Recently I got a notification that Windows 7 will reach End of Life (i.e. Microsoft will no longer support it) so
If you decide to abandon a GMail account (not just personal GMail, GSuite included), you might want to save a record of the past emails. Or maybe you simply want to backup your emails. How to do that? Google Takeout will do the work. Go to https://ta
I started blogging in about 2008. At that time I just started to develop my first startup product, a cloud reference manager for researchers called Peaya (then PaperBox) which unfortunately (or fortunately?) failed miserably later. At that time I was
In the previous blog, we have used Stork’s big analysis to analyze the literature of fNIRS. At that time, Stork only analyzed the frequency of a single word (number indicates the number of occurences): near-infrared (1945) spectroscopy (1868) c
What’s the trend of fNIRS in brain research? Is the field growing or dying? Which country and which institute are the most productive? Who are the experts in the field and how can I contact them for collaboration? Which brain region(s) are most
