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
If you are a newcomer in the NIRS field, you may wonder who are the experts in this field. You might know a few already – for example your boss. But who else are there and where they are? We developed “Find Experts” app to quickly f
From 2000 and 2010, the number of PubMed citations had grown from half million to 1 million. Today we see ~3,000 new papers everyday! Year Number 2016 1258608 2015 1253004 2014 1201621 2013 1146180 2012 1085504 2011 1017939 2010 940347 2009 875631 20
Near infrared spectroscopy (NIRS) is an increasingly popular technology in brain imaging research. Compared to fMRI, NIRS can be used for more naturalistic experiments, including face to face communication, natural body movements, sports, infants, an
In this version, we modified the templates for 3-D render view and use a high-resolution template. It also includes a few scalp view. You may pick up your favorite display for your paper (or presentation). Please go to the download page to download.
When we looked at the space at night, we see a lot of stars, dotted on a vast dark space. But is there anything in the dark area? Guess, in the photo below, how many stars are in the red circle? None? A few? A few thousand? Billions of stars? In 2002
David Eagleman was my co-advisor during my Ph.D study in Baylor College of Medicine. He produced a documentary movie last year with BBS addressing an important question “What is reality?” based on advances in neuroscience. I personally fi
You are reading a book or article online, and want to copy/paste a few sentences. But then you realize the book or article prevents you to copy, or maybe the book/article is an image. Instead of typing the sentences, you can use a tool to automatical
Before performing any data analysis, we should check the data quality first. Below are 3 ways to do so. 1. Visual check of the time series The best pattern detector is our eyes and brains! In many cases, if we visually see the data, we know what is w
