-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathExp1_Main.m
258 lines (255 loc) · 10.6 KB
/
Exp1_Main.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
%This script is written by Dongyu Gong ([email protected])
%for the research project on saliency-specific distractor suppression.
%Please cite this article as:
% Gong, D., Theeuwes, J. A saliency-specific and dimension-independent mechanism
% of distractor suppression. Atten Percept Psychophys (2020).
% https://doi.org/10.3758/s13414-020-02142-8
%% Experiment 1
%% Prepare the environment
clear;
close all;
clc;
KbName('UnifyKeyNames');
commandwindow;
rng('Shuffle');
%% Intializing the variables
black = [0 0 0];
background = [5 5 5];
white = [255 255 255];
grey = [127 127 127];
green = [0 255 0];
scrlist=Screen('Screens');
myscreen = 0;
[w,h] = Screen('WindowSize',myscreen);
x_center = w/2; y_center = h/2;
[w_physical,h_physical] = Screen('DisplaySize',myscreen);% return physical size of the screen,in millimeter
Screen_Size = sqrt((w_physical/10)^2 + (h_physical/10)^2);% Screen size in centimeter,equals screen size in inch * 2.54
min_fixation = 0.7;
max_fixation = 1;
Fixation_Duration = (max_fixation - min_fixation).*rand(3000,1) + min_fixation;
Response_Window = 1.5;
ITI = 0.5;% intertrial interval
Target_Position = 8;
Size_Condition = [0 0.3 0.65 1.0];
Num_Condition = size(Size_Condition,2);
Distractor_Position = Target_Position - 1;
Rest_Time = 30;
Eccentricity = 4.35;
View_Distance = 72;
Circle_Diameter = 1.8 + Size_Condition;
Diamond_Diameter = 1.8;
Segment_Length = 0.8;
Thickness = 0.08;
Actual_Nprac = 20;
N_OneSession = 360;
Ntrial = N_OneSession * 6;
Actual_Ntrial = Ntrial;
Horz_Key = 's';
Vert_Key = 'k';
FixRect1=[-5 -1 5 1];
FixRect2=[-1 -5 1 5];
%% Converting Visual Angle to Pixel Size
% tan(beta/2)=s/2d
Eccentricity = 2 * View_Distance * tand(Eccentricity/2) * (w/(w_physical/10));
Circle_Diameter = 2 * View_Distance * tand(Circle_Diameter/2) * (w/(w_physical/10));
Diamond_Diameter = 2 * View_Distance * tand(Diamond_Diameter/2) * (w/(w_physical/10));
Segment_Length = 2 * View_Distance * tand(Segment_Length/2) * (w/(w_physical/10));
Half_Segment = Segment_Length/2;
Thickness = 2 * View_Distance * tand(Thickness/2) * (w/(w_physical/10));
%% Obtaining Subject Info
Items = {'Subject Number','Initials[e.g. Michael Jackson=MJ]','Gender[1=female,2=male,3=other]','Age','Handedness[1=right,2=left,3=other]'};
Title = 'Participant Information';
Sub_Info = inputdlg(Items,Title);
Sub_Number = Sub_Info{1};
Sub_Name = Sub_Info{2};
pwd = pwd();
if ~isdir([pwd '/Exp1_Participant_Data/' Sub_Name])
mkdir([pwd '/Exp1_Participant_Data/' Sub_Name]);
end
Filename = ['Exp1_Result_' Sub_Number '_' Sub_Name];
number = str2double(Sub_Number);
if mod(number,8)==0
HPL = 8; % HPL= high-probability location
else
HPL = mod(number,8);
end
%% Opening the Screen
Screen('Preference','SkipSyncTests',1);
[window,rect] = Screen('OpenWindow',myscreen,background);
Screen('BlendFunction',window,GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
HideCursor();
%% Arranging the Positions
theta = linspace(0,360-360/Target_Position,Target_Position);
x_circle= x_center + cosd(theta)*Eccentricity;
y_circle = y_center + sind(theta)*Eccentricity;
Rect_Circle = [x_circle-Circle_Diameter(1)/2;y_circle-Circle_Diameter(1)/2; x_circle+Circle_Diameter(1)/2; y_circle+Circle_Diameter(1)/2];
Rect_Diamond = [x_circle y_circle-Diamond_Diameter/2; x_circle-Diamond_Diameter/2 y_circle;...
x_circle y_circle+Diamond_Diameter/2; x_circle+Diamond_Diameter/2 y_circle];
%% Arranging Trial Info
loc = 1:8;
notHPL = loc(loc~=HPL);
distractor_ratio = [ones(1,65)*HPL repmat(notHPL,1,5)];
SESSION = zeros(6,N_OneSession);
%1distactor location
% 2 line segmaent orientation
% 3 target location
% 4 distractor condtion
% 5 response
% 6 response time
SESSION(1,:) = [zeros(1,60) distractor_ratio distractor_ratio distractor_ratio];
SESSION(2,:) = randi([1,2],1,N_OneSession); % segment orientation within target :1=vertical, 2=horizontal
for i = 1:N_OneSession
while 1
SESSION(3,i) = randi(8);
if SESSION(3,i) ~= SESSION(1,i)
break
end
end
end % target position
SESSION(4,:) = [ones(1,60) ones(1,100)*2 ones(1,100)*3 ones(1,100)*4];% 4 conditions
SESSION = SESSION(:,randperm(size(SESSION,2)));
SESSION2 = SESSION(:,randperm(size(SESSION,2)));
SESSION3 = SESSION(:,randperm(size(SESSION,2)));
SESSION4 = SESSION(:,randperm(size(SESSION,2)));
SESSION5 = SESSION(:,randperm(size(SESSION,2)));
SESSION6 = SESSION(:,randperm(size(SESSION,2)));
RESULTS = [SESSION SESSION2 SESSION3 SESSION4 SESSION5 SESSION6];
Block_Accur = zeros(1,Ntrial/180);
Block_RT = zeros(1,Ntrial/180);
%% Practice Session
Exp1_Prac_Session;
while 1
if Prac_Accur < 0.85
DrawFormattedText(window,'Your accuracy is too low. Please Press SPACE BAR to do the practice again.','center','center',white);
Screen('Flip',window);
while 1
[keyIsDown,secs,keyCode]=KbCheck();
if keyCode(KbName('space'))
break
end
end
Exp1_Prac_Session;
else
break
end
end
DrawFormattedText(window,'Now you can begin the Testing Session.\n\n Press SPACE BAR to continue','center','center',white);
Screen('Flip',window);
while 1
[keyIsDown,secs,keyCode]=KbCheck();
if keyCode(KbName('space'))
break
end
end
WaitSecs(1);
%% Testing Session
%% Start
DrawFormattedText(window,'PLEASE READ THE INSTRUCTIONS AGAIN\n\n Put your middle or index fingers on the S and K keys on the keyboard.\n\n During every trial you will see a circular array.\n\n Your task is to judge the orientation of the segment contained in the diamond.\n\n Press S to indicate Horizontal and K to indicate Vertical.\n\n Please be as ACCURATE AND FAST as possible.\n\n Note that it is IMPORTANT to keep your eyes fixed on the fixation cross during every trial.\n\n Now press SPACE BAR to start','center','center',white);
Screen('Flip',window);
while 1
[keyIsDown,secs,keyCode]=KbCheck();
if keyCode(KbName('space'))
break
end
end
Screen('Flip',window);
WaitSecs(ITI);
for ntrial = 1:Actual_Ntrial
Screen('FillRect',window, grey,[x_center y_center x_center y_center]+FixRect1);
Screen('FillRect',window, grey,[x_center y_center x_center y_center]+FixRect2);
Screen('Flip',window);
WaitSecs(Fixation_Duration(ntrial));
tmp_position = RESULTS(3,ntrial);
diamond_position = Rect_Diamond(:,[tmp_position tmp_position+Target_Position]);
Screen('FramePoly',window,green,diamond_position,Thickness);
switch RESULTS(2,ntrial)
case 1
Screen('DrawLine',window,grey,x_circle(tmp_position),y_circle(tmp_position)-Half_Segment,x_circle(tmp_position),y_circle(tmp_position)+Half_Segment,Thickness);
case 2
Screen('DrawLine',window,grey,x_circle(tmp_position)-Half_Segment,y_circle(tmp_position),x_circle(tmp_position)+Half_Segment,y_circle(tmp_position),Thickness);
end
for ite = 1:8
if tmp_position~=ite
vert_horz = randi(2);
switch vert_horz
case 1
Screen('DrawLine',window,grey,x_circle(ite),y_circle(ite)-Half_Segment,x_circle(ite),y_circle(ite)+Half_Segment,Thickness);
case 2
Screen('DrawLine',window,grey,x_circle(ite)-Half_Segment,y_circle(ite),x_circle(ite)+Half_Segment,y_circle(ite),Thickness);
end
end
end
distractor = RESULTS(1,ntrial);
switch RESULTS(4,ntrial)
case 1
case 2
tmp_rect_circle=[x_circle-Circle_Diameter(2)/2;y_circle-Circle_Diameter(2)/2; x_circle+Circle_Diameter(2)/2; y_circle+Circle_Diameter(2)/2];
Screen('FrameOval',window,green,tmp_rect_circle(:,distractor)',Thickness,Thickness);
case 3
tmp_rect_circle=[x_circle-Circle_Diameter(3)/2;y_circle-Circle_Diameter(3)/2; x_circle+Circle_Diameter(3)/2; y_circle+Circle_Diameter(3)/2];
Screen('FrameOval',window,green,tmp_rect_circle(:,distractor)',Thickness,Thickness);
case 4
tmp_rect_circle=[x_circle-Circle_Diameter(4)/2;y_circle-Circle_Diameter(4)/2; x_circle+Circle_Diameter(4)/2; y_circle+Circle_Diameter(4)/2];
Screen('FrameOval',window,green,tmp_rect_circle(:,distractor)',Thickness,Thickness);
end
for ite = 1:8
if tmp_position~=ite && distractor~=ite
Screen('FrameOval',window,green,Rect_Circle(:,ite)',Thickness,Thickness);
end
end
Screen('FillRect',window, grey,[x_center y_center x_center y_center]+FixRect1);
Screen('FillRect',window, grey,[x_center y_center x_center y_center]+FixRect2);
Screen('Flip',window);
start_time = GetSecs;
while GetSecs < start_time + Response_Window
[keyIsDown,secs,keyCode] = KbCheck();
if keyCode(KbName(Horz_Key))
if RESULTS(2,ntrial)==2
RESULTS(5,ntrial)=1;
RESULTS(6,ntrial) = GetSecs-start_time;
else
RESULTS(6,ntrial) = GetSecs-start_time;
beep;
end
break
elseif keyCode(KbName(Vert_Key))
if RESULTS(2,ntrial)==1
RESULTS(5,ntrial) = 1;
RESULTS(6,ntrial)= GetSecs-start_time;
else
RESULTS(6,ntrial) = GetSecs-start_time;
beep;
end
break
end
end
Screen('Flip',window);
WaitSecs(ITI);
cd([pwd '/Exp1_Participant_Data/' Sub_Name]);
save(Filename);
cd ..
if mod(ntrial,180)==0 && ntrial~=Actual_Ntrial
block = ntrial/180;
Block_Accur(block) = sum(RESULTS(5,(block-1)*180+1:block*180))/180;
Block_RT(block) = sum(RESULTS(6,(block-1)*180+1:block*180))/180;
start_time=GetSecs;
while GetSecs < start_time+Rest_Time
time_left = ceil(Rest_Time-(GetSecs - start_time));
DrawFormattedText(window,['You have finished ' num2str(block) ' out of 12 blocks.\n\n Your average response time in this block is ' num2str(Block_RT(block)) '\n\nYour accuracy in this block is' num2str(Block_Accur(block)) '\n\nTime for a break!\n\n Time left:',...
num2str(time_left),' secs'],'center','center',white);
Screen('Flip',window);
end
DrawFormattedText(window,'Press any key to continue','center','center',white);
Screen('Flip',window);
KbWait;
elseif ntrial==Actual_Ntrial
block = ntrial/180;
Block_RT(block) = sum(RESULTS(6,(block-1)*180+1:block*180))/180;
Block_Accur(block) = sum(RESULTS(5,(block-1)*180+1:block*180))/180;
DrawFormattedText(window,['Your average response time in this block is ' num2str(Block_RT(block)) '\n\nYour accuracy in this block is' num2str(Block_Accur(block)) '\n\n You have finished the experiment.Press any key to exit.'],'center','center',white);
Screen('Flip',window);
KbWait;
end
end
sca;
ShowCursor();