brain

Conversion of coordinates between two images

Assume you have an image F and you identify a point (x,y,z) on this image (say with SPM’s display function). You then normalize this...
Xu Cui
34 sec read

E-prime vs MatLab (+Psychophysics Toolbox)

Both E-prime and MatLab are popular tools for presenting stimuli for fMRI, NIRS and behavioral experiments. Here are a comparison between them. E-Prime MatLab...
Xu Cui
12 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,...
Xu Cui
14 sec read

xjView Tutorial Videos

FDR function, English version FDR function, Chinese version 普通话 Mandarin FDR function, Chinese version 河南话
Xu Cui
2 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...
Xu Cui
1 min read

Balloon model of hemodynamics

Picture: The vascular bed is treated as an expandable venous compartment (a balloon). If there is a burst of flow, the volume will increase...
Xu Cui
1 min read

Ready Go paper finally published in PLoS Biology

The paper: http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000167 The primer by Prof Jennifer Coull: http://www.plosbiology.org/article/info%3Adoi%2F10.1371%2Fjournal.pbio.1000166 Discuss at Peaya: http://www.peaya.com/paper/showPaper.php?id=24184&displayKey=w1JgkPwu8V
Xu Cui
9 sec 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...
Xu Cui
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...
Xu Cui
1 min read