load estimated current
USAGE:
[Jinfo,Jact] = ...
vb_load_current(currfile,curr_type,ave_mode,trial,ix_area,verbose)
--- INPUT:
currfile - current file name
--- Optional INPUT:
curr_type - current type
= 0 : J-current : original vertex current [Default]
= 1 : Z-current : internal current
correspond to locally spread source
If currfile is old format, curr_type is neglected
and Jact is returned
ave_mode : trial average mode
= ON : trial average is done [Default]
= OFF : No trial average
trial : trial number to load
if empty, all trials are loaded [Default]
ix_area : (absolute) vertex index to load
if empty, all vertices are loaded [Default]
verbose : verbose mode for trial file loading
0 (No print) , 1 ('.') , 2 ('session , trial')
--- OUTPUT:
Jinfo : structure of current info
.version : Version of current file
.curr_type : 'J-current' or 'Z-current'
.tindex : Subsampled indices
.Lact : # of current direction at one vertex in active region
.Wact : Smoothing filter matrix
.ix_act : Vertex index corresponding to Z-current
.ix_act_ex : Vertex index corresponding to J-current
.NJact : # of (J/Z)-current vertices
.Tsample : Time sample index for 'Jact'
.Ntrial : # of trials
.Nsession : # of sessions
.jactdir : Current directory
.SampleFreq: Sample Frequency [Hz]
.Pretrigger: Pretrigger period
.Tmsec : Time in msec
.trial : Trial number to load (optional input for this function)
Jact : current timecourse
Jact(Nact,Nsample) for ave_mode = ON
Jact(Nact,Nsample,Ntrials) for ave_mode = OFF
Nact = Lact * Nvact, Nvact = length(ix_act)
Nsample : # of time sample,
Ntrials : # of trials in all session]
Jact( n + Nvact*(i-1), t, :)
current at the vertex 'ix_act(n)', 'i-th' direction, time index 't'
Time sample in MEG data : Tsample(t)
Time (ms) in MEG data : Tmsec(t)
2007-3-5 Masa-aki Sato
2008-7-9 Masa-aki Sato
support all file types and old files
2008-09-30 Taku Yoshioka
Minor change for variables in Jinfo
2010-03-01 M. Sato
modified not to use Jinfo.ix_act_ex
Copyright (C) 2011, ATR All Rights Reserved.
License : New BSD License(see VBMEG_LICENSE.txt)0001 function [Jinfo,Jact] = ... 0002 vb_load_current(currfile,curr_type,ave_mode,trial,ix_area,verbose) 0003 % load estimated current 0004 % 0005 % USAGE: 0006 % [Jinfo,Jact] = ... 0007 % vb_load_current(currfile,curr_type,ave_mode,trial,ix_area,verbose) 0008 % 0009 % --- INPUT: 0010 % currfile - current file name 0011 % --- Optional INPUT: 0012 % curr_type - current type 0013 % = 0 : J-current : original vertex current [Default] 0014 % = 1 : Z-current : internal current 0015 % correspond to locally spread source 0016 % If currfile is old format, curr_type is neglected 0017 % and Jact is returned 0018 % ave_mode : trial average mode 0019 % = ON : trial average is done [Default] 0020 % = OFF : No trial average 0021 % trial : trial number to load 0022 % if empty, all trials are loaded [Default] 0023 % ix_area : (absolute) vertex index to load 0024 % if empty, all vertices are loaded [Default] 0025 % verbose : verbose mode for trial file loading 0026 % 0 (No print) , 1 ('.') , 2 ('session , trial') 0027 % --- OUTPUT: 0028 % Jinfo : structure of current info 0029 % .version : Version of current file 0030 % .curr_type : 'J-current' or 'Z-current' 0031 % .tindex : Subsampled indices 0032 % .Lact : # of current direction at one vertex in active region 0033 % .Wact : Smoothing filter matrix 0034 % .ix_act : Vertex index corresponding to Z-current 0035 % .ix_act_ex : Vertex index corresponding to J-current 0036 % .NJact : # of (J/Z)-current vertices 0037 % .Tsample : Time sample index for 'Jact' 0038 % .Ntrial : # of trials 0039 % .Nsession : # of sessions 0040 % .jactdir : Current directory 0041 % .SampleFreq: Sample Frequency [Hz] 0042 % .Pretrigger: Pretrigger period 0043 % .Tmsec : Time in msec 0044 % .trial : Trial number to load (optional input for this function) 0045 % 0046 % Jact : current timecourse 0047 % Jact(Nact,Nsample) for ave_mode = ON 0048 % Jact(Nact,Nsample,Ntrials) for ave_mode = OFF 0049 % Nact = Lact * Nvact, Nvact = length(ix_act) 0050 % Nsample : # of time sample, 0051 % Ntrials : # of trials in all session] 0052 % 0053 % Jact( n + Nvact*(i-1), t, :) 0054 % current at the vertex 'ix_act(n)', 'i-th' direction, time index 't' 0055 % Time sample in MEG data : Tsample(t) 0056 % Time (ms) in MEG data : Tmsec(t) 0057 % 0058 % 2007-3-5 Masa-aki Sato 0059 % 2008-7-9 Masa-aki Sato 0060 % support all file types and old files 0061 % 2008-09-30 Taku Yoshioka 0062 % Minor change for variables in Jinfo 0063 % 2010-03-01 M. Sato 0064 % modified not to use Jinfo.ix_act_ex 0065 % 0066 % Copyright (C) 2011, ATR All Rights Reserved. 0067 % License : New BSD License(see VBMEG_LICENSE.txt) 0068 0069 0070 if ~exist('curr_type','var'), curr_type = 0; end; 0071 if ~exist('ave_mode','var'), ave_mode = ON; end; 0072 if ~exist('trial','var'), trial = []; end; 0073 if ~exist('ix_area','var'), ix_area = []; end; 0074 if ~exist('verbose','var'), verbose = 0; end; 0075 0076 [J_type, file_type] = vb_load_current_type(currfile); 0077 % J_type = 0 : J-current 0078 % J_type = 1 : Z-current 0079 % file_type = 0: single file 0080 % file_type = 1: parent file with trial files 0081 0082 [Jinfo] = vb_load_current_info(currfile); 0083 0084 if ave_mode==OFF && file_type==1 0085 % trial mode & each trial current file 0086 if J_type==1 0087 [Jact,ix_act] = ... 0088 vb_load_current_z_tr(currfile,curr_type,trial,ix_area,verbose); 0089 Jinfo.curr_type = curr_type; 0090 else 0091 if curr_type==1, 0092 fprintf('No Z-current and J-current is returned\n'); 0093 end 0094 [Jact,ix_act] = ... 0095 vb_load_current_j_tr(currfile,trial,ix_area,verbose); 0096 Jinfo.curr_type = 0; 0097 end 0098 else 0099 % single current file 0100 if J_type==1 0101 [Jact,ix_act] = ... 0102 vb_load_current_z(currfile,curr_type,ave_mode,trial,ix_area); 0103 Jinfo.curr_type = curr_type; 0104 else 0105 if curr_type==1, 0106 fprintf('No Z-current and J-current is returned\n'); 0107 end 0108 [Jact,ix_act] = ... 0109 vb_load_current_j(currfile,ave_mode,trial,ix_area); 0110 Jinfo.curr_type = 0; 0111 end 0112 end 0113 0114 Jinfo.trial = trial; 0115 Jinfo.NJact = length(ix_act); 0116