brain

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
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14 sec read

xjView Tutorial Videos

FDR function, English version FDR function, Chinese version 普通话 Mandarin FDR function, Chinese versi
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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 ) / (P+N), i.e. correctly classified divided by the total false discovery rate (FDR) = TP / (TP+FP), i.e.
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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 and then return to baseline. That’s where ‘balloon’ comes from. During steady state (i.e. wi
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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/s
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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 clinically friendly less environment noise long time recording c
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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
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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
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3 min read