Note: as of Jan/2014, make sure you use the APX_devel branch on GitHub to get the latest version. At some point this will be merged back into master.
Eric's Note (Jan 12/2014): Use session R041-2013-08-06 as a test since it contains an events file within the directory. If you are using another session be sure to run the AMPX_getEvetns script in the util/amplipex/loading folder.
To load data:
channels_to_load = [10:13]; % specify channels in the APX data file to load data = AMPX_loadData('R041-2013-08-06.dat',channels_to_load,20); % note decimation factor of 20
To convert into a fieldtrip data structure:
data_ft = AMPX_makeft(data);
Make trials (note, this will require an event file to have been created previously, Eric to update explanation of this):
%% trl cfg = ; cfg.trialfun = 'ft_trialfun_AMPXsquareTrack'; cfg.trialdef.hdr = data.hdr; cfg.trialdef.pre = 2; % time before the event to be included (It would take roughly 3 seconds to get from one feeder to the next) cfg.trialdef.post = 3; % time after the event to be included (The rats would typically stay for at least 2 seconds while eating) cfg.trialdef.eventtype = 'nose_in_nofires'; % could be 'fires', 'no_fires', 'nose_in_fires', 'nose_in_nofires' [trl, event] = ft_trialfun_AMPXsquareTrack(cfg); cfg.trl = trl; data_trl = ft_redefinetrial(cfg,data_ft);
Now you can do the usual ft analysis stuff: