## 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
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## 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
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## 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.
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## 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
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## 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
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## 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
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## 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
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