To provide the most recent news and documentation www.pymvpa.org reflects the development 2.0 series (renamed 0.6 series) of PyMVPA. If you are interested in the documentation of the previous stable 0.4 series of PyMVPA, please visit v04.pymvpa.org.

mvpa2.datasets.eep.EEPBin

class mvpa2.datasets.eep.EEPBin(source)

Read-access to binary EEP files.

EEP files are used by eeprobe a software for analysing even-related potentials (ERP), which was developed at the Max-Planck Institute for Cognitive Neuroscience in Leipzig, Germany.

http://www.ant-neuro.com/products/eeprobe

EEP files consist of a plain text header and a binary data block in a single file. The header starts with a line of the form

‘;%d %d %d %g %g’ % (Nchannels, Nsamples, Ntrials, t0, dt)

where Nchannels, Nsamples, Ntrials are the numbers of channels, samples per trial and trials respectively. t0 is the time of the first sample of a trial relative to the stimulus onset and dt is the sampling interval.

The binary data block consists of single precision floats arranged in the following way:

<trial1,channel1,sample1>,<trial1,channel1,sample2>,...
<trial1,channel2,sample1>,<trial1,channel2,sample2>,...
.
<trial2,channel1,sample1>,<trial2,channel1,sample2>,...
<trial2,channel2,sample1>,<trial2,channel2,sample2>,...

Read EEP file and store header and data.

Parameters :

source : str

Filename.

channels

List of channel names

dt

Time difference between two adjacent samples

nchannels

Number of channels

nsamples

Number of trials/samples

ntimepoints

Number of data timepoints

t0

Relative start time of sampling interval