Biopac 数据导入 matlab 处理方法

第一步：在 AcqKnowledge 软件中，将数据通道的 mark 信息导入到 Graph，并将数据存储为 acq3 的格式

第二步：MATLAB中读取acq3文件脚本

clc
clear
%%%所有被试这一层路径
pathsub = fullfile(fileparts(pwd),'data1_origin');
dirsub = dir(pathsub);
namesub={dirsub.name};
for nsub = 3:length(namesub)
    %%%每个被试这一层路径
    pathdata = fullfile(pathsub,namesub{nsub});
    dirdata = dir(pathdata);
    namedata = {dirdata.name};
    for ndata = 3:length(namedata) 
        acq_name = fullfile(pathdata,namedata{ndata});
        acq=load_acq(acq_name);
        marker_scan=[];
        marker_scan(1,:)=acq.markers.lSample(1,:);
        marker_name=acq.markers.szText;
        %% 将文本转为数字 segment -> 555
        [~,idx]=ismember(marker_name,{'Segment 1','Segment 2','Segment 3'});%
        a=find(idx~=0);
        if isempty(a)==0
            for k=1:length(a)
                marker_name{1,a(k)}='555';
            end
        end
        marker_name=str2num(char(marker_name));
        marker_scan(2,:)=marker_name;
        marker_scan=transpose(marker_scan);
        % 删除静息 mark 和分段 mark
        b=find(marker_scan(:,2) == 555);
        b=sort(b,'descend');
        for n_b=1:length(b)
            marker_scan(b(n_b),:)=[];
        end
        marker_time=marker_scan;
        namesave = namedata{ndata}(1:end-4);
        if ~exist(fullfile(fileparts(pwd),'data2_mat',namesub{nsub}),'dir')
            mkdir(pathsave);
        end
        pathsave = fullfile(fileparts(pwd),'data2_mat',namesub{nsub},strcat(namesave,'.mat'));
        save(pathsave, 'acq', 'marker_time');
    end
end