fix a tiny "bug" on collect and save responses

Author: Remi-Gau

collectAndSaveResponses.m

@@ -9,8 +9,8 @@
                 responseEvents(iResp).onset - experimentStart;
         end
 
-        responseEvents.fileID = logFile.fileID;
-        responseEvents.extraColumns = logFile.extraColumns;
+        responseEvents(1).fileID = logFile.fileID;
+        responseEvents(1).extraColumns = logFile.extraColumns;
         saveEventsFile('save', cfg, responseEvents);
 
     end

getExperimentStart.m

@@ -1,6 +1,10 @@
 function cfg = getExperimentStart(cfg)
-    % Show the fixation cross
+    % cfg = getExperimentStart(cfg)
+    %
+    % Stores the onset time in cfg.experimentStart
+    
     drawFixation(cfg);
     vbl = Screen('Flip', cfg.screen.win);
     cfg.experimentStart = vbl;
+    
 end