brain

10-20 system for brain area location

10-20 system is a method to localize brain areas. It uses 4 landmarks of head: 1  the nasion which is the point between the forehead and the nose; 2  the inion which is the lowest point of the skull from the back of the head and is normally indicated
Xu Cui
29 sec read

Statistical type II error (beta), and power

Even though I learned power analysis in elementary statistics class, I totally forget it because I never use it. As we have to put power analysis in our grant, I am forced to relearn this topic. Definition: type II error: null hypothesis should be re
Xu Cui
1 min read

Why choose this book? Chinese version 如何做出選擇?

Read’s book, Why choose this book, was pubilshed in traditional Chinese recently. Here is a link: Simplified Chinese version is hopefully coming.
Xu Cui
4 sec read

Two games, iterative thinking

1. The smallest unique number The host asks each of a large number of participants to write down a positive integer. The person whose number is unique and smallest wins. If you were one of the participant, which number do you write? e.g. If the numbe
Xu Cui
26 sec read

brain images: Change data type of brain image

Last update: 2012/09/04 An image file can be saved in different formats such as uint8 or int16, etc, based on different number of bytes used for each voxel. How to convert between them? Here is one solution using SPM functions (no need SPM’s in
Xu Cui
1 min read

Brain AC-PC line

AC: anterior commissure PC: posterior commissure The Anterior Commissure (precommissure) is a bundle of white fibers, connecting the two cerebral hemispheres across the middle line, and placed in front of the columns of the fornix. On a sagittal sect
Xu Cui
19 sec read

Talk by Frans de Waal

Today I listened to Frans de Waal’s talk on empathy in primates. It’s quite interesting. He wrote several popular books including “Chimpanzee Politics”. Links: Frans de Waal
Xu Cui
5 sec 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
4 min read

brain image preprocessing

convert between different image formats strip skull (FSL bet, or Bet for gui) bet brain.nii brain_noskull.nii register to a standard brain (FSL flirt, or Flirt for gui) Select avg152T1_brain.img as reference, use rigid body (6 parameters) A mat file
Xu Cui
19 sec read