Xu Cui

 

   



403 Stories by Xu Cui

fNIRS overview by Stork’s Big Analysis

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...
0 1 min read

Are the two balls of the same color?

Look at the two balls below. What colors are they? To me, the left ball is definitely blue, and the right one is green....
0 31 sec read

NIRS People: Interview Dr Chunming Lu

Chunming Lu’s lab in Beijing Normal University has published a paper titled “Shared neural representations of syntax during online dyadic communication” in NeuroImage. This...
0 4 min read

Fix narginchk Error using SPM

Today I downloaded SPM 12 latest version, and when I tried to start it complained: Error using narginchk (line 10) too many input arguments...
0 18 sec read

How to fix bluetooth mouse not working under windows 10?

I am using a Dell laptop with Windows 10. It’s been working great, but occasionally my bluetooth mouse won’t work. Sometimes I need to...
0 19 sec read

Interview with Drs. Chenbo Wang and Xianchun Li

A group of scientists in East China Normal University has published a paper earlier this month titled “Dynamic interpersonal neural synchronization underlying pain-induced cooperation...
0 3 min read

6 experiments you should do with NIRS (vs fMRI)

Let’s be frank. Compared to fMRI, NIRS has a number of intrinsic weaknesses. The signal to noise ratio is lower, the...
1 4 min read

New Mac OSX Mojave on old Mac

Back in 2009, When I got my first MacBook Pro I was excited. It had the best configuration at that time (8G memory and...
0 25 sec read

Mac on Windows?

If you need to play with Mac OSX but do not own a Mac computer, you might wish you could install Mac OSX on...
0 43 sec read

fNIRS中基线的做法和注意事项 (Baseline in fNIRS)

This article is a guest post by Rui Chen. An English version can be downloaded here 对于信号的分析,不论是脑电的数据分析还是近红外的数据分析,基本上都会遇到一个参考基线的问题,这是很多童鞋和老师会疑惑的一个关键点。为什么要使用基线以及如何正确的使用。 在本文中,小编主要介绍近红外的基线问题,对于脑电数据分析中的基线在小编的脑电数据分析系列文章中会进行完整的阐述。 目前我们使用的近红外所使用的光源发射方式,大多数是采用连续波长,对于完全采集绝对路径的信号是无法进行采样,所以在当前所评估的血红蛋白的指标中,总是对相对于另一个时间点的变化进行测量评估,例如,如果您研究响应刺激的氧合变化,您实际上正在测量在呈现刺激之前的短时间与之间的响应变化。刺激前的时期通常被称为基线。 什么是基线以及如何使用它? 对于那些刚刚开始使用NIRS技术的科研人员来说,有些不清楚测量结果是什么意思。测量的数据相对于什么,为了解释这一点,我们来说说基线的起源。 最常用的NIRS是“连续波”CW-NIRS,它基于修正的Beer-Lambert定律,使用连续发射光源,近红外光进入大脑组织有可能发生散射(改变其方向)又可能被吸收的光学特性来研究大脑活动水平。散射和吸收都是CW-NIRS提供相对测量的原因。 当把手指放在红色激光指示器前时,散射效果清晰可见。你会看到你的整个手指亮起来,而不只是一条直线,光散射在组织中。因此,如果您直接测量手指上的激光,则根本没有吸收,也不会通过激光指示器接收100%的发射光。 我们可以假设这种在所有方向上的散射是恒定的,所以如果我们测量接收光的变化,那么光从光源到接收器的路径中的吸收肯定是会发生改变。...
2 10 sec read