Category: PHP

Renaming Brain Vision Recorder EEG recordings

Tweet Share Email Share Share FollowRenaiming Brain Vision Recorder files is a pain. Here’s a python script that makes it (more of) a breeze. The problem Brain Vision Recorder is a widely used software for EEG-recordings. Every EEG-recording is saved as three files: One .eeg file, containing all the data One .vmrk/.amrk/.bmrk file, containing markers and a reference to the .eeg file One .vhdr/.ahdr/.bhdr file, containing header information and references to the marker file and data file. This is the file that represents the recording and opened by analysis software Because of these internal references between the files, it is …

Calculating d’, beta, c and Ad’ in Python and PHP

Tweet Share Email Share Share FollowAbout d’ A central component of Signal Detection Theory is d’ – a measure of the ability to discriminate a signal from noise. The d’ is flanked by the parameters “beta” and c, which are measures of the criterion that the observer uses to discriminate between the two. These measures can be calculated in every experiment where there is a signal (e.g. target trials) and noise (e.g. nontarget trials), and the observer (e.g. subject) is to indicate whether the signal was present or not. d’, beta and c are statistical measures in a model where …