diff --git a/.DS_Store b/.DS_Store
index 482209b..1724172 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/002 After Image GUI Project/.DS_Store b/002 After Image GUI Project/.DS_Store
index 251b033..0a6d6a7 100644
Binary files a/002 After Image GUI Project/.DS_Store and b/002 After Image GUI Project/.DS_Store differ
diff --git a/002 After Image GUI Project/AfIm_pupil_Exp_Rivalry.m b/002 After Image GUI Project/AfIm_pupil_Exp_Rivalry.m
index ccfb2ea..fcefbfb 100644
--- a/002 After Image GUI Project/AfIm_pupil_Exp_Rivalry.m	
+++ b/002 After Image GUI Project/AfIm_pupil_Exp_Rivalry.m	
@@ -1,4 +1,4 @@
-function AfIm_pupil_Exp_Rivalry(subName,meanLum,Bckg_Chro,axis_chck,AdaptTime,nRep,OneHemi_chck,Simu_chck)
+function AfIm_pupil_Exp_Rivalry(subName,meanLum,Bckg_Chro,axis_chck,AdaptTime,nRep,OneHemi_chck,Simu_chck,OneEnd_chck)
 Clock = 0;
 %%%%%%%%%%%%%%%%
 % ARDUINO and CAMERA settings
@@ -373,8 +373,15 @@ WaitSecs(AdaptTime)
             secs0 = Screen('Flip', window);
             for iFrames = 1:nFrames
                 
-                Screen('FillOval', window, ramp(iFrames,:), tstCircleLeft  );
-                Screen('FillOval', window, ramp(iFrames,:), tstCircleRight  );
+                if OneEnd_chck
+                    Screen('FillOval', window, ramp(iFrames,:), tstCircleLeft  );
+                    Screen('FillOval', window, ramp(iFrames,:), tstCircleRight  );
+                else
+                    Screen('FillArc', window, rampLeft(iFrames,:), tstCircleLeft, 0, 180);
+                    Screen('FillArc', window, rampRight(iFrames,:), tstCircleRight, 180, 180);
+                end
+                
+                Screen('DrawText', window, TrialCountStr, 20, 20, redLut, wRGB);
 
                 Screen('DrawDots', window, [0 0],clockPix, 0, [lftXCircleCenter,center(2)], 2); % black dot for fixation
                 Screen('DrawDots', window, [0 0],clockPix, 0, [rhtXCircleCenter,center(2)], 2); % black dot for fixation
diff --git a/002 After Image GUI Project/TVP_GENERATOR.mlapp b/002 After Image GUI Project/TVP_GENERATOR.mlapp
index 633eb3e..4c1e115 100644
Binary files a/002 After Image GUI Project/TVP_GENERATOR.mlapp and b/002 After Image GUI Project/TVP_GENERATOR.mlapp differ