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Functional Near Infrared Spectroscopy (fNIRS): List of manufactures

Contents Company Products Artinis Brite, OxyMon, OctaMon, PortaMon, PortaLite BIOPAC fNIR 100, fNIR2000M Series CORTIVISION PHOTONCAP Huichuang Medical NirScan-900X, NirSmartⅡ- Pro GOWERLABS NTS fNIRS

Xiaodan Feng
Apr 21, 2020 15 min read

What does a wavelet coherence plot tell you?

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

Xu Cui
Aug 27, 2012 1 min read

Wavelet Coherence

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

Xu Cui
Aug 31, 2010 1 min read

SVM regression with libsvm

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

Xu Cui
May 20, 2010 1 min read

浅谈近红外脑成像英文期刊文章撰写

本文作者是刘宁博士作者简介：刘宁，塔夫斯大学生物医学工程博士（Tufts University），斯坦福大学脑科学方向科研人员。 Frontiers 杂志客座编辑（Guest Associate Editor for Fronti

Xu Cui
Jun 23, 2022 11 sec read

nirs2img, create an image file from NIRS data

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

Xu Cui
Oct 2, 2019 51 sec read

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文献鸟Stork是我的科研好帮手

我在Baylor College of Medicine读研究生的时候经常遇到一种尴尬局面，就是同学们在热烈讨论本领域某篇文献的时候，我一脸茫然 — 因为我压根就不知道这篇文章。回头Pub

Xu Cui
Dec 17, 2015 50 sec read

Stanford psychologist’s brain scanned in MRI for 18 months,…

When I was a graduate student in Baylor College of Medicine I participated in an “exercise and brain” study in our lab as a subject, and got my brain scanned every week for about 10 weeks. I thought it was crazy; but apparently it’s

Xu Cui
Dec 14, 2015 22 sec read

Comparison between NIRS and fMRI

I have a friend who has been using fMRI for more than 10 years and now a professor. He heard NIRS might be a good technology to measure human brain but knew little about it. So what is the difference between NIRS and fMRI? This is probably a common q

Xu Cui
Dec 14, 2015 43 sec read

MRI fiducial markers

In concurrent NIRS-MRI experiments, you often need to know exactly where the NIRS probes are in the MRI iamges. In this case, a fiducial marker becomes important. In our 2011 publication titled “A quantitative comparison of NIRS and fMRI across

Xu Cui
Nov 10, 2015 39 sec read

xjView 8.13 released. Allow to change the minimum of…

xjView 8.14 just released. Download link: https://www.alivelearn.net/xjview xjView 8.13 is released with the following new features: Allow to change the minimum value of the color bar range. This will enable you to do Create a symmetric color bar fro

Xu Cui
Nov 9, 2015 20 sec read

NIRS hyperscanning data analysis (4) coherence analysis

NIRS hyperscanning data analysis (1) NIRS hyperscanning data analysis (2) NIRS hyperscanning data analysis (3) NIRS hyperscanning data analysis (4) How do we analyze hyperscanning data to find out the relationship between two brains? Obviously correl

Xu Cui
Nov 2, 2015 1 min read

Using the anti-correlation between oxy and deoxy hemoglobin for…

Back in 2009 we published a paper titled “Functional near infrared spectroscopy (NIRS) signal improvement based on negative correlation between oxygenated and deoxygenated hemoglobin dynamics“. In a nutshell, we found the oxy- and deoxy-H

Xu Cui
Oct 12, 2015 46 sec read

Fisher transformation

Assume you are doing a correlation study between two brain areas, A and B. For each subject, you get a single value, the correlation between A and B. And you have 100 subjects. How do you know if the mean of the correlation is significantly different

Xu Cui
Sep 21, 2015 17 sec read

NIRS hyperscanning data analysis (3) quality check

NIRS hyperscanning data analysis (1)NIRS hyperscanning data analysis (2)NIRS hyperscanning data analysis (3)NIRS hyperscanning data analysis (4) Data quality check 1. Behavior data To identify behavior abnormalities, we need to plot the behavior data

Xu Cui
Sep 21, 2015 1 min read

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