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%*****PRACTICE STIM SETUP****
% the number of trials of each stim pairing
practrials_perType = 2;
% build the practice trial list
Ayi_trials = repmat([ A,y,i ], practrials_perType, 1);
Ayc_trials = repmat([ A,y,c ], practrials_perType, 1);
Abi_trials = repmat([ A,b,i ], practrials_perType, 1);
Abc_trials = repmat([ A,b,c ], practrials_perType, 1);
Byi_trials = repmat([ B,y,i ], practrials_perType, 1);
Byc_trials = repmat([ B,y,c ], practrials_perType, 1);
Bbi_trials = repmat([ B,b,i ], practrials_perType, 1);
Bbc_trials = repmat([ B,b,c ], practrials_perType, 1);
% bind all the trial types to define the block's trials
practice_trialList = [Ayi_trials; Ayc_trials; Abi_trials; Abc_trials; Byi_trials; Byc_trials; Bbi_trials; Bbc_trials];
% read in the images and create the required textures: {A,B}{y,b}
prac_images = [];
prac_images{1}{1} = imread('./images/1_Y.bmp');
prac_images{1}{2} = imread('./images/1_B.bmp');
prac_images{1}{3} = imread('./images/1_1.bmp');
prac_images{1}{4} = imread('./images/1_0.bmp');
prac_images{1}{5} = imread('./images/1.bmp');
prac_images{2}{1} = imread('./images/2_Y.bmp');
prac_images{2}{2} = imread('./images/2_B.bmp');
prac_images{2}{3} = imread('./images/2_1.bmp');
prac_images{2}{4} = imread('./images/2_0.bmp');
prac_images{2}{5} = imread('./images/2.bmp');
% % % randomize the images - No keep them known for practice.
% % randx_i=randperm(size(prac_images,2));
% % count=1;
% % for randx=1:size(prac_images)
% % prac_images{count} = prac_images{randx_i(randx)};
% % count=count+1;
% % end
% load all the textures
prac_textures = [];
for pracTexture_index = 1 : size(prac_images, 2) % Number of stims
for color_index = 1 : size(prac_images{pracTexture_index}, 2) %1=Y, 2=B, 3=1, 4=0, 5=k
prac_textures{pracTexture_index}{color_index} = Screen('MakeTexture', wPtr, prac_images{pracTexture_index}{color_index});
end
end
% load the textures into an array mapping onto corresponding choice ids
textures = [];
textures(A,y,i) = prac_textures{1}{1}; % {A,B}{y,b}
textures(A,y,c) = prac_textures{1}{1};
textures(A,b,i) = prac_textures{1}{2};
textures(A,b,c) = prac_textures{1}{2};
textures(B,y,i) = prac_textures{2}{1};
textures(B,y,c) = prac_textures{2}{1};
textures(B,b,i) = prac_textures{2}{2};
textures(B,b,c) = prac_textures{2}{2};
FBtextures(A,1) = prac_textures{1}{3}; % {A,B}{rew,norew}
FBtextures(A,2) = prac_textures{1}{4};
FBtextures(B,1) = prac_textures{2}{3};
FBtextures(B,2) = prac_textures{2}{4};
%****BEGIN PRE-PRACTICE*****
practiceComplete = false;
numPracticeBlocks = 1; %*******Determines # of Blocks*******
pracblock_index = 0;
no_response = false;
% loop through the pracitce phase
while ~practiceComplete
% track trial ids
trial_ids = [];
% track trial type
trial_stimuli = [];
%track response
trial_response = [];
% track which stim was choosen
trial_selectedStim = [];
% track the rt
trial_RT = [];
% track the accuracy
trial_accuracy = [];
% track the feedback
trial_feedback = [];
no_response = [] ;
% increment the block index
pracblock_index = pracblock_index + 1;
random_index = randperm(size(practice_trialList, 1));
randomized_trialList = practice_trialList(random_index,:);
trial_index = 1;
while trial_index <= size(randomized_trialList, 1)
% Fixation
fixation_text = '+';
Screen('TextFont',wPtr,'Times');
Screen('TextStyle',wPtr,0);
Screen('TextColor',wPtr,[255 255 255]);
Screen('TextSize',wPtr,80);
DrawFormattedText(wPtr,fixation_text,'center','center');
Screen(wPtr, 'Flip');
% show the fixation for 1 sec
WaitSecs(1);
% get the current trial's info
type = randomized_trialList(trial_index, 1);
color = randomized_trialList(trial_index, 2);
congru = randomized_trialList(trial_index, 3);
% NetStation('Event',trial_pair,EventTime+offset - (1.81e-05)*(EventTime -
% Synchtime)););
% define the correct choice
if color==1
correct_choice = left_button;
elseif color==2
correct_choice = right_button;
end
% define the window side based on congruency
if color==1 && congru==1 %(yellow-congruent==left)
rect = left_rect;
elseif color==1 && congru==2 %(yellow-incongruent==right)
rect = right_rect;
elseif color==2 && congru==1 %(blue-congruent==right)
rect = right_rect;
elseif color==2 && congru==2 %(blue-incongruent==left)
rect = left_rect;
end
% now draw the stim
Screen('DrawTexture', wPtr, textures(type,color,congru), [], rect);
Screen(wPtr, 'Flip');
% start the trial timer;
startTime = GetSecs();
wait_stamp=GetSecs;
while 1
[ keyIsDown, seconds, keyCode ] = KbCheck(GPindx);
if keyIsDown
if keyCode(left_button) && left_button==correct_choice
subject_choice = left_button;
no_response = false;
trlResponse = 1;
trlAccuracy = 1;
break;
elseif keyCode(right_button) && right_button==correct_choice
subject_choice = right_button;
no_response = false;
trlResponse = 1;
trlAccuracy = 1;
break;
elseif keyCode(left_button) && left_button~=correct_choice % ERROR!
subject_choice = left_button;
no_response = false;
trlResponse = 1;
trlAccuracy = 0;
break;
elseif keyCode(right_button) && right_button~=correct_choice % ERROR!
subject_choice = right_button;
no_response = false;
trlResponse = 1;
trlAccuracy = 0;
break;
end
elseif(GetSecs-wait_stamp) > PREPRACT_RESPDEADLINE,
subject_choice = no_response;
no_response = true;
trlResponse = -1;
trlAccuracy = -1;
break;
end
end
% stop the trial timer
RT = GetSecs() - startTime;
% determine if they selected the right or left stim
if subject_choice == correct_choice
trlselectedStim = 1;
else
trlselectedStim = 0;
end
% determine the reward feedback
Screen('TextSize',wPtr,70);
Screen('TextFont',wPtr,'Times');
Screen('TextStyle',wPtr,1);
if no_response == true
Screen('TextColor',wPtr,[255 0 0]);
reward_text = 'Respond Faster';
elseif no_response == false
if trlAccuracy == 0
Screen('TextColor',wPtr,[255 0 0]);
reward_text = 'ERROR!';
elseif trlAccuracy == 1
Screen('TextColor',wPtr,[0 255 0]);
reward_text = 'Good';
end
end
% now show feedback based on response and stim contingencies
DrawFormattedText(wPtr,reward_text,'center','center');
Screen(wPtr, 'Flip');
% show the feedback for 1 sec
WaitSecs(1);
% increment the trial index
trial_index = trial_index + 1;
end
% check to see if practice is done
if pracblock_index >= numPracticeBlocks
practiceComplete = true;
end
end
% *****END OF PRE-PRACTICE***** |