brain
While discussing data analysis with a coworker today, I Jokingly said my experience on brain imaging can be condensed into two lines of code: V = spm_vol('filename.img'); % note: spm_vol can also take nii files as input M = spm_read_vols(V); % M is a
Go-Nogo game This game is fairly simple, but it’s very hard to get all correct. A subject sits in front of a computer. In the “go” block, a series of letters will appear one after another in the center of the screen. The subject has
Previous post “Games used in human brain research ” The finger tapping task mentioned in the last post is rather boring. How interesting it is to move fingers? So in this post I will talk about a more interesting task: competitive butt
Some noise is easy to detect – simply plotting the time courses of NIRS signal, you will find the noise so out of range and you will discard the data. However, I find in some instances the noise level seems to be in the normal range but the dat
The vast majority of studies on the relationship between human brain and behavior try to answer the “where” question: Where in the brain are the regions that are responsible for a particular task? For example, where is the finger movement
This post is under updating … The information is not complete Table can be found here: https://spreadsheets.google.com/spreadsheet/ccc?key=0AmI1wIXzRozHdFQzWHNQajI5eTlOeWRFd0tCT0hwYmc&hl=en_US Artinis OctaMon The m
Let’s say you collected some brain data (time series) using NIRS while the participants were performing a task (say finger tapping), and you use the wt function in the “Cross Wavelet and Wavelet Coherence Toolbox” (link dead. Please
Ten dollars today is more attractive than the same amount of money tomorrow and is consistent with the well known proverb, “a bird in the hand is worth two in the bush”. We all know that the value of a reward is discounted over time. How the value di
Let’s say you have two correlated variables, x and y. You may have more then one data points with x=10 and y=5. But if you do a scatter plot all these data points of the same value will become a single dot. You may want to use circles with size
