nirs

tcpip connection with pnet

We use TCP/UDP/IP Toolbox 2.0.5 to read and write data from/to a TCPIP port. It’s fast and reliable. The version we use is 2.0.5. Below is a matlab sample script showing how to connect to another computer (called ETG-4000) with TCPIP : %Connect

Xu Cui
May 8, 2010 1 min read

Noise removal in NIRS

Noise removal methods in NIRS can be divided into 4 categories: reducing noise based on its temporal characteristics: The instrument noise is usually in the high frequency band and thus can be removed by band pass filtering. Band pass filtering can a

Xu Cui
May 5, 2010 41 sec read

Use serial port to trigger ETG 4000 with E-Prime

Open properties of the experiment, select tab “Devices” Add a serial port. Make sure the COM Port number is correct In your experiment flow, add inline function to where you want to trigger ETG4000 or put marker. In that function, enter t

Xu Cui
Feb 9, 2010 14 sec read

Sensitivity, specificity, ROC, AUC …

You can’t believe how much jargon there is in binary classification. Just remember the following diagram (from wiki). accuracy = ( TP + TN ) / (P+N), i.e. correctly classified divided by the total false discovery rate (FDR) = TP / (TP+FP), i.e.

Xu Cui
Sep 17, 2009 1 min read

Advantage and Disadvantage of NIRS over fMRI

Advantages cheaper portable (smaller) safe natural settings (e.g. real human interactions instead of computer presentation) high temporal resolution (10Hz) less sensitive to head motion clinically friendly less environment noise long time recording c

Xu Cui
Jul 9, 2009 18 sec read

NIRS data analysis (time series)

Also check out NIRS data analysis (GLM and visualization) Environment requirement MatLab SPM xTopo under xjView xjview is located in /fs/fmrihome/fMRItools/Xjview Add xjview to path by addpath(genpath('/fs/fmrihome/fMRItool

Xu Cui
Jun 15, 2009 1 min read

NIRS data analysis (GLM and visualization)

Also check out NIRS data analysis (time series) Environment requirement MatLab SPM 5 or 8 xjView 8 xjview can be downloaded for free from https://www.alivelearn.net/xjview/ (If you are inside CIBSR, xjview is located in /f

Xu Cui
Jun 12, 2009 3 min read

batch script for NIRS-SPM

I wrote some batch scripts for NIRS-SPM. They, together with NIRS-SPM and xTopo, are called “super” package (I apparently run out of names). The “super” package are located in directory: /fs/quarry/cuixu/NIRS/super Please don&

Xu Cui
Apr 24, 2009 1 min read

Analyze NIRS data with NIRS-SPM

being updated for v01_r14 … NIRS-SPM is a SPM5 and MATLAB-based software package for statistical analysis of near-infrared spectroscopy (NIRS) signals, developed at the Bio Imaging Signal Processing (BISP) lab. at KAIST in Korea. prepare files

Xu Cui
Nov 18, 2008 4 min read