loadcntevent.m

Matlab下的EEG处理程序库

function f = eeg_loadCNTevent(fid)

% eventTable = eeg_loadCNTevent(fid)
%               
%   fid         -  File identifier
%
%   eventTable  -  structure of event info
%
%   -- Note: Works only with Scan 4.1+ data files

% Licence:  GNU GPL, no express or implied warranties
% History:  2002, [e-mail]
%           06/2002, [e-mail]
%                    adapted to eeg_toolbox
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

fseek(fid,886,'bof');           eventPos = fread(fid,1,'long');
fseek(fid,eventPos,'bof');      f.type   = fread(fid,1,'uchar');
                                f.size   = fread(fid,1,'long');
                                f.offset = fread(fid,1,'long');
                                
fseek(fid,f.offset,'cof');
for i = 1:(f.size/19),
    
    f.event(i).stimType   = fread(fid,1,'short');
    
    f.event(i).keyBoard   = fread(fid,1,'char');
    
    f.event(i).keyPad     = fread(fid,1,'bit4');
    
    f.event(i).Accept     = fread(fid,1,'bit4');
    
    f.event(i).offset     = fread(fid,1,'long');
    
    f.event(i).type       = fread(fid,1,'short');
    
    f.event(i).code       = fread(fid,1,'short');
    
    f.event(i).latency    = fread(fid,1,'float');
    
    f.event(i).epochEvent = fread(fid,1,'char');
    
    f.event(i).accept     = fread(fid,1,'char');
    
    f.event(i).accuracy   = fread(fid,1,'char');
    
end