LD_static_MAE_v4.m

function LD_static_MAE_v4(subject, session, debug)

%In this version, we add multiple velocities
% subject = 'sub-01'; 
% session = 1;                                                                                                                           
% debug = 0;


ex.version = 'v4';
%%%% resolution 
if debug == 1

    ex.screenWidth = 40;             % in cm; %laptop=27.5,office=43, %19=%T3b, miniHelm=39;
    ex.viewingDist = 46;             % in cm; 3Tb/office=43, miniHelm=57;
	ex.resolution = SetResolution(max(Screen('Screens')),1280,1024,85); % laptop 1920,1080/ 2880, 1800 ,0
    ex.gammaCorrection = 0;       % make sure this = 1 when you're at the scanner!
else                                                                                                                            
    ex.screenWidth = 40;             % in cm; % 16 in eye tracking room 425%laptop=27.5,office=43, %19=%T3b, miniHelm=39;
    ex.viewingDist = 46;             % in cm; %23 in eye tracking                                                                                                                          room 425 3Tb/office=43, miniHelm=57;
    ex.resolution = SetResolution(max(Screen('Screens')),1280,1024,85); % ET room 1600,900,60
    ex.gammaCorrection = 1;       % make sure this = 1 when you're at the scanner!
end

%%%% keyboard
[keyboardIndices, productNames, ~] = GetKeyboardIndices ;
deviceNumber = keyboardIndices(1);
responseKeys = zeros(1,256);
responseKeys(KbName('4'))=1; % button box 1
responseKeys(KbName('1'))=1; % button box 2
responseKeys(KbName('0'))=1; % button box 3
% responseKeys(KbName('4'))=1; % button box 4
responseKeys(KbName('4$'))=1; % button box 1
responseKeys(KbName('1!'))=1; % button box 2
responseKeys(KbName('0)'))=1; % button box 3
% responseKeys(KbName('4$'))=1; % button box 4

Screen('Preference', 'SkipSyncTests', 0);

% ex.scanNum = input('Scan number :');
ex.runNum = input('Run number :');

%%% basic naming set-up
ex.subject = subject;
ex.session = session;


%%%% set-up rand
ex.startTime = clock;
rng(sum(100*ex.startTime));
ex.rand = rng;

%%%% files and things
ex.root = pwd;
ex.date = datestr(now,30);



%%%% 2D sine wave grating inducers properties
ex.stim.spatialFreqDeg = 0.25;%0.5/2;   % cycles per degree of visual angle
ex.stim.orientation = [180]; %[90 180];                                                % in degrees
ex.stim.gaborHDeg = 12;                                                   % in degrees of visual angle
ex.stim.gaborWDeg = 6; 
ex.stim.distFromFixDeg = 2+ex.stim.gaborWDeg/2;%3;%2; %1.5 %each grating edge 1.5 deg horizontal away from fixation (grating center 6 deg away)

ex.stim.backgroundLum = [30 30 30; 30 30 30];
% ex.stim.backgroundLum = [20 20 20; 20 20 20];
ex.stim.contrast = 0.15;
ex.stim.contrastOffset = [(ex.stim.backgroundLum(1,1)./255)./(1-ex.stim.contrast); ex.stim.backgroundLum(2,1)./255];%+ex.stim.contrast/2;
ex.stim.luminanceRange = 2*ex.stim.contrast*ex.stim.contrastOffset;
ex.stim.contrastMultiplicator = ex.stim.luminanceRange./2;  % for sine wave

ex.stim.maxLum = 255*(ex.stim.contrastOffset+ex.stim.contrastMultiplicator);
ex.stim.minLum = 255*(ex.stim.contrastOffset-ex.stim.contrastMultiplicator);
ex.stim.contrast = (ex.stim.maxLum-ex.stim.minLum)./(ex.stim.maxLum+ex.stim.minLum);



%% Background Luminance levels for each phantom condition
% 255*(0.55-0.03/2) =136.4250
% 255*(0.55-0.15/2) =121.125
% 255*(0.55-0.7/2) = 51
%% Background Luminance level for phantom control conditions
%0.55*255 = 140.25

%%%% sine wave grating timing (within block scale)
ex.initialFixation = 6;        % in seconds
ex.finalFixation = 2;          % in seconds
ex.blockLength = 120; %120; %ex.trialFixation+ ceil(ex.stimDur*ex.stimsPerBlock);           % in seconds
ex.testLength = 1;% in seconds
ex.ITI1 = 3;
ex.ITI2 = 1;% in seconds
ex.ITI3 = 9; %+9 sec break every 10 trial
% ex.betweenBlocks = 2;          % in seconds
ex.flipsPerSec = 60;  % 60;         % number of phase changes we want from the visual stimulus, and thus the number of times we want to change visual stimulation on the screen
ex.flipWin = 1/ex.flipsPerSec;         % in seconds then actually in 1 sec the stimuli will change 12 times 
ex.stim.cycPerSec = 1; %drifting speed in cycles of grating per sec
ex.stim.motionRate = 360*ex.stim.cycPerSec; %drifting speed in degrees of visual angle per sec
ex.stim.dphase = ex.stim.motionRate/ex.flipsPerSec; %degrees per flip


%%%% Test stimulus: counterphasing grating
% ex.test.spatialFreqDeg = 2;
ex.test.contrastOffset = ex.stim.backgroundLum(:,1)./255;% 
ex.test.contrast = 0.1;
ex.test.luminanceRange = 2*ex.test.contrast*ex.test.contrastOffset;%0.1; %linspace(0.01,0.20,10);%[0.05, 0.10, 0.15];                                                 % in %, maybe?? %here the number of stimulus contrast levels is the number of different conditions
ex.test.contrastMultiplicator = ex.test.luminanceRange/2;  % for sine wave 0.5 = 100% contrast, 0.2 = 40%

%0.2+0.7/2;%0.425;
ex.test.gaborHDeg = ex.stim.gaborHDeg;                                                  % in degrees of visual angle
ex.test.gaborWDeg = (2/3)*4;%4;%
ex.test.distFromFixDeg = 0; % in degrees of visual angle, grating center 2 deg away (edge 1 deg away)
ex.test.cycPerSec = ex.stim.cycPerSec;
ex.testDur = (1/ex.test.cycPerSec);        % in seconds. 1.77 sec refers to sine wave grating 1.77 = 2cycles/1.13cyc.sec-1 mutiplied by 2 for back and forth

%%%% Fixation
ex.fixSizeDeg =  .2;            % in degrees, the size of the biggest white dot in the fixation
ex.bigFixSizeDeg = 0.5;
ex.outerFixPixels = 2;          % in pixels, the black ring around fixation

%%%% Nonius lines 
ex.lineHdeg = 0.4;
ex.lineWdeg = 0.06;

%%% horizontal line 
ex.horiLineWdeg = 0.7;


%%%% global stim/test offset from fixation
ex.xoffsetDeg = 0; %degrees of visual angle
ex.yoffsetDeg = 0;%4; %degrees of visual angle

%%%% conditions & layout (across blocks scale)

% ex.conds = {'LowContPhUp','LowContPhDown','LowContPhCtUp','LowContPhCtDown',...
%     'MedContPhUp','MedContPhDown','MedContPhCtUp','MedContPhCtDown', ...%
%     'HighContPhUp','HighContPhDown','HighContPhCtUp','HighContPhCtDown'
%     %Here, the Left/Right indicator in the condition name corresponds to the phantom grating pair location on the screen 
%     }; 
ex.conds = {'MedContPhUp','MedContPhDown','MedContPhCtUp','MedContPhCtDown'};
ex.repsPerRun = [1 1 1 1];              % repetitions of each condition per run
condIdx = 1:length(ex.conds); %[1,4,7]; %conditions we are interested to keep
ex.conds = ex.conds(condIdx);
ex.repsPerRun = ex.repsPerRun(condIdx);
ex.numConds = length(ex.conds);
% with line of code below we will have 1 condition per block, randomized. we might need to change that
% later, to have the conditions randomized within each block

ex.numBlocks = sum(ex.repsPerRun);
ex.condShuffle = [];
for i =1:ex.repsPerRun(1)
   ex.condShuffle = [ex.condShuffle, Shuffle(1:length(ex.conds))];
end
%  ex.condShuffle = [Shuffle([ex.condsOrdered])];
%  ex.repsPerRun = 8;
% for i =1:ex.repsPerRun
%     ex.condShuffle = [ex.condShuffle, Shuffle([ex.numConds/2+1:ex.numConds])];
% end

ex.totalTime = [];
for t =1:length(ex.blockLength) %there is a different block length for every drifting speed
    if t == 1
        ex.totalTime = sum([ex.totalTime, ex.initialFixation + (ex.numBlocks/length(ex.blockLength) * (ex.blockLength(t) + ex.testLength))]);
    elseif t <length(ex.blockLength) && t > 1
             ex.totalTime = sum([ex.totalTime, (ex.numBlocks/length(ex.blockLength) * (ex.blockLength(t) + ex.testLength))]); 
    elseif t == length(ex.blockLength)
        ex.totalTime = sum([ex.totalTime, ((ex.numBlocks/length(ex.blockLength)-1) * (ex.blockLength(t) + ex.testLength)) + ex.blockLength(t) + ex.finalFixation]);
    end
end
ex.allFlips = (0:ex.flipWin:ex.totalTime);
ex.allFlips = ex.allFlips(1:end-1);
ex.trialFlips = (0:ex.flipWin:ex.blockLength(1)+ex.testLength);
ex.trialFlips = ex.trialFlips(1:end-1);

%%%% screen
ex.backgroundColor = [127.4933  127.4933  127.4933];%[108.3760 108.3760 108.3760];%;  % color based on minimum gating luminance 
ex.fontSize = 26;

%% %%%%%%%%%%%%%%%%%
   % timing model  %
   %%%%%%%%%%%%%%%%%

ex.onSecs = [ones(1,ex.blockLength(t)) zeros(1,ex.testLength)];
ex.longFormBlocks = Expand(ex.onSecs,ex.flipsPerSec,1); %1 when block, 0 when between block
length(ex.longFormBlocks)
ex.stimOnSecs = [ones(1,ex.blockLength(t)) zeros(1,ex.testLength)]; %zeros(1,ex.trialFixation) 
ex.longFormStimOnSecs = Expand(ex.stimOnSecs,ex.flipsPerSec,1); %1 when stim on, 0 when fixation or between blocks

% %% create the timing model of stimulus conditions for this particular run
% clear i
for i =1:ex.numConds
    conditions(i).name = ex.conds(i);
    conditions(i).startTimes = [];
end

%%
%%%%%%%%%%%%%%%
% open screen %
%%%%%%%%%%%%%%%
HideCursor;
Priority(9);
%Priority(0);
%%%% open screen
screen=max(Screen('Screens'));
if debug
    [w, rect]=Screen('OpenWindow',screen,ex.backgroundColor,[],[],[],[],[],kPsychNeed32BPCFloat);
    %[w, rect]=Screen('OpenWindow',screen,ex.backgroundColor,[100 100 600 400],[],[],[],[],kPsychNeed32BPCFloat); %might need to switch 900 and 600 by 1600 and 1200 for room 425
    
else
    %[w, rect]=Screen('OpenWindow',screen,ex.backgroundColor,[100 100 600 400],[],[],[],[],kPsychNeed32BPCFloat); %might need to switch 900 and 600 by 1600 and 1200 for room 425
    
    [w, rect]=Screen('OpenWindow',screen,ex.backgroundColor,[],[],[],[],[],kPsychNeed32BPCFloat); %might need to switch 900 and 600 by 1600 and 1200 for room 425
end
Screen(w, 'TextSize', ex.fontSize);
Screen('BlendFunction', w, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); % Set up alpha-blending for smooth (anti-aliased) lines

%gamma correction, file prepared for room 425
if ex.gammaCorrection
    % Gamma correction (run phase2_photometry.mat in 417C computer, get gamma
    % table)
    load("phase2_photometry.mat");
    Screen('LoadNormalizedGammaTable', screen, inverseCLUT);
end
%%%% timing optimization
frameInt = Screen('GetFlipInterval',w);
slack = frameInt/2;
frameRate =  1/frameInt;%Screen('NominalFrameRate',w);
% 
flipTimes = [0:1/ex.flipsPerSec:1/(ex.stim.cycPerSec)]; %multiply frameInt by 60/12 = 5 to flip the image every 5 frames
ex.stim.flipTimes = flipTimes(1:length(flipTimes)-1);

nconds = length(ex.stim.contrastMultiplicator);
ex.stim.phases = nan(nconds, length(ex.stim.flipTimes));

clear r l

for l =1:nconds
    
    ex.stim.phases(l,:) = ((1:length(ex.stim.flipTimes))-1)*ex.stim.dphase;%(ex.stim.oscillation1(c,l,r,:).*180*ex.stim.cycles(1)+ ex.stim.oscillation2(c,l,r,:).*180*ex.stim.cycles(2))/2 + ex.stim.spatialPhase; %./ex.stimDur-2*pi*flipTimes./ex.stimDur make it oscillatory
    
end


flipTimesTest = [0:1/ex.flipsPerSec:ex.testLength(1)]; %multiply frameInt by 60/12 = 5 to flip the image every 5 frames
ex.test.flipTimes = flipTimesTest(1:length(flipTimesTest)-1);

ex.test.tempPhase1 = 0;% rand(1,1)*2*pi;
halfPeriod1 = linspace(-1,1,ex.testDur*ex.flipsPerSec/2+1);
halfPeriod2 = linspace(1,-1,ex.testDur*ex.flipsPerSec/2+1);
ex.test.oscillation1 = [halfPeriod1(1:end-1),halfPeriod2(1:end-1)];%cos(2*pi*(1/ex.testDur(1))*ex.test.flipTimes+ex.test.tempPhase1);
ex.test.spatialPhase1 = 0;
ex.test.tmpphase = ex.test.oscillation1(1).*90+ex.test.spatialPhase1; %./ex.stimDur-2*pi*flipTimes./ex.stimDur make it oscillatory

%reasonning behind the calculation of ex.stim.phases:
%GOAL: render the back and forth of grating drifts oscillatory in time instead
%of linear to smooth the signal phase shifts at the time of drift direction
%reversal
%1) The length (x) of grating shift after each flip is the variable that will have to be oscillatory
%over time

%2)oscillatory signal formula is x(t) = A*cos(w*t+phase) (x is the oscillatory signal, w is the angular
%frequency in rad/s, t is the time in s, phase is a phase shift in rad at time t (here 0),
%A is the amplitude of the signal

%3)Here the angular frequency is calculated based on the idea of one
%oscillation per stimulus. Considering a stimulus as 1 cycle forward and 1 cycle backwards(definition might change based on how many cycles are desired per stimulus), one oscillation will represent 2 cycles =ex.stim.cycPerSec*ex.stimDur)
% thus the temporal frequency of the oscillation should be 1/ex.stimDur
% (this is w)

%%4) We multiply w by t. Here the resolution of the signal is given by the number of flips per second, so the duration is given by flipTimes.
%Finally, we multiply by 2*pi for the units to be in radian.

%5)Then we subtract the phase at each flip at time t which here is 0.

%6)The amplitude of cos() varies between -1 and +1. Here we want our
%displacement (grating shift) in degrees with a displacement of 360? (of the spatial grating) every half temporal oscillation so we multiply by 180 for the range to be [-180;+180].

%7) we multiply by the number of cycles desired to drift over one lap
%(ex.stim.cycles).

%%%% scale the stim params for the screen
ex.ppd = pi* rect(3) / (atan(ex.screenWidth/ex.viewingDist/2)) / 360;

ex.gaborHeight = round(ex.stim.gaborHDeg*ex.ppd);                 % in pixels, the size of our objects
ex.gaborWidth = round(ex.stim.gaborWDeg*ex.ppd);                 % in pixels, the size of our objects
ex.rawGaborHeight = ex.gaborHeight;
ex.rawGaborWidth = ex.gaborWidth;
ex.stim.distFromFix = round(ex.stim.distFromFixDeg*ex.ppd);

%%%% scale the test params for the screen
ex.probeHeight = round(ex.test.gaborHDeg*ex.ppd);                 % in pixels, the size of our objects
ex.probeWidth = round(ex.test.gaborWDeg*ex.ppd);                 % in pixels, the size of our objects
ex.rawProbeHeight = ex.probeHeight*1;
ex.rawProbeWidth = ex.probeWidth*1;
ex.test.distFromFix = round(ex.test.distFromFixDeg*ex.ppd);

%%%scale the fixation params for the screen
ex.fixSize = round(ex.fixSizeDeg*ex.ppd);
ex.bigFixSize = round(ex.bigFixSizeDeg*ex.ppd);
ex.lineW = round(ex.lineWdeg*ex.ppd);
ex.lineH = round(ex.lineHdeg*ex.ppd);
ex.horiLineW = round(ex.horiLineWdeg*ex.ppd);

%%% scale offset
ex.xoffset = round(ex.xoffsetDeg*ex.ppd);
ex.yoffset = round(ex.yoffsetDeg*ex.ppd);

%% Create sinewave grating frames saved for each repetition and each condition

ex.rectSWave = nan(ex.rawGaborHeight,ex.rawGaborWidth,length(ex.test.oscillation1),nconds);
ex.rectSWaveID = nan(length(ex.test.oscillation1),nconds);
clear c r

for l = 1:length(ex.stim.contrastMultiplicator)
    for f =1:length(ex.test.oscillation1)
        phase = ex.stim.phases(l,f);
        ex.rectSWave(:,:,f,l) = makeSineGrating(ex.rawGaborHeight,ex.rawGaborWidth,ex.stim.spatialFreqDeg,...
            ex.stim.orientation,phase,ex.stim.contrastOffset(l),ex.stim.contrastMultiplicator(l),...
            ex.ppd);
        ex.rectSWaveID(f,l) = Screen('MakeTexture', w, squeeze(ex.rectSWave(:,:,f,l)));
    end
end

% for i =1:60
% figure();
% imshow(squeeze(ex.rectSWave(:,:,i,1))/255)
% end
%check luminances ranges
% minval = min(squeeze(ex.rectSWave(1,1,1,:,:)),[],'all');
% maxval = max(squeeze(ex.rectSWave(1,1,1,:,:)),[],'all');

%% create dynamic grating image as a test for other eye

% phase = repmat((0:360/60:360-360/60),1,ex.testLength);
phases1 = ex.test.tmpphase;%squeeze(ex.stim.phases(c,l,r,:)).*360.*ex.rawProbeHeight./ex.ppd;%
spphase = 0;
ex.testStim = nan(ex.rawProbeHeight,ex.rawProbeWidth,ex.testLength*ex.flipsPerSec,length(ex.test.contrastOffset));
for l = 1:length(ex.test.contrastOffset)
    for n = 1:length(phases1)
        ex.testStim(:,:,n,l) = makeCounterPhasingGrating(ex.rawProbeHeight,ex.rawProbeWidth,ex.stim.spatialFreqDeg,...
            ex.stim.orientation,spphase,ex.test.contrastOffset(l),ex.test.contrastMultiplicator(l), ex.test.tmpphase(n),...
            ex.ppd);
        ex.testStimID(n,l) = Screen('MakeTexture', w, squeeze(ex.testStim(:,:,n,l)));
    end
end
% check luminances ranges
% min(squeeze(ex.testStim(:,:,1)),[],'all')
% max(squeeze(ex.testStim(:,:,1)),[],'all')
% % repmat(max(max(squeeze(ex.lcSWave(1,:,:)),[],1)),1)
% figure();
% plot(squeeze(ex.testStim(200,41,:)))
% for i =1:60
% figure();
% imshow(squeeze(ex.testStim(:,:,1))/255)
% end
% figure();
% imshow(squeeze(ex.lcSWave(2,:,:))/255)

%% Sine wave gratings locations 
xc = rect(3)/2; % rect and center, with the flexibility to resize & shift center - change vars to zero if not used.
yc = rect(4)/2; %+e.vertOffset;

%left grating
xL = xc-ex.stim.distFromFix-ex.xoffset;
% grating y locations
yL = yc-ex.yoffset;
%right grating
xR = xc+ex.stim.distFromFix-ex.xoffset;
yR = yc-ex.yoffset;

 
%% Create rectangular masks to make an intervening blank gap
% ph1LPaperture=Screen('OpenOffscreenwindow', w, ex.stim.backgroundLum(l,:));
% Screen('FillRect',ph1LPaperture, [255 255 255 0], [xLl yLt xLr yLb]); %Left grating window
% Screen('FillRect',ph1LPaperture, [255 255 255 0], [xRl yRt xRr yRb]); %Right grating window


%% %%%% initial window - wait for backtick
DrawFormattedText(w,'Fixate the fixation dot as best as you can. \n\n After each drifting stimulus disappears, \n\n report your initial percept using the following digits \n\n 4: The central grating (probe) \n\n appears to go up \n\n 1: The central grating motion direction is ambiguous  \n\n 0: The central grating appears to go down \n\n Press Space to start'... % :  '...
    ,xc/2, yc/2,[0 0 0]);
Screen(w, 'Flip', 0);
%WaitSecs(2);
KbTriggerWait(KbName('Space'), deviceNumber);

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                         experiment                         %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%% START task TASK/FLIPPING
clear l n
n = 1;
blockCnt = 1;
cnt = 0; %trial count

ex.responses = [];
ex.responseTimes=[];
ex.correctResp = [];

% onOffs = [diff([0 ex.longFormBlocks])];
% bLength = ex.blockLength(1);
ex.flipTime = nan(length(ex.trialFlips),length(ex.condShuffle));
    
KbQueueCreate(deviceNumber,responseKeys);
%%% initial fixation
if n == 1 && blockCnt == 1 %for first block
    ex.tasktstart = clock;
    ex.startRun = GetSecs();
    Screen('FillRect', w, ex.backgroundColor);
    Screen('DrawDots', w, [xc yc+ex.yoffset], ex.fixSize, [255 255 255], [], 2);
    Screen(w, 'Flip', 0);
    WaitSecs(ex.initialFixation);
end
%%% Launch the task
for c = 1:length(ex.condShuffle)
    
    condNum = ex.condShuffle(c);
    condName = conditions(condNum).name{:};
    f = 1;
    l = ceil(condNum/2); % indices for each contrast level
    %l = condNum;
    %flip through the block and following between block time
    while n <= length(ex.longFormBlocks) %true
        KbQueueStart(); % response time
        ex.longFormBlocks(n)
        %%%% draw sine wave grating stimulus %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

        Screen('FillRect', w, ex.stim.backgroundLum(l,:));
        if nnz(find(ex.longFormStimOnSecs(n)))
            ex.rectLRect =  CenterRectOnPoint([0 0 ex.rawGaborWidth ex.rawGaborHeight],xL,yL);
            ex.rectRRect =  CenterRectOnPoint([0 0 ex.rawGaborWidth ex.rawGaborHeight],xR,yR);

            % stim
            if contains(condName, 'Up')
                Screen('DrawTexture', w, ex.rectSWaveID(f,l),[],ex.rectLRect);
                Screen('DrawTexture', w, ex.rectSWaveID(f,l),[],ex.rectRRect);

            elseif contains(condName, 'Down')
                Screen('DrawTexture', w, ex.rectSWaveID(end-(f-1),l),[],ex.rectLRect);
                Screen('DrawTexture', w, ex.rectSWaveID(end-(f-1),l),[],ex.rectRRect);

            end
            
%             Screen('DrawTexture',w,ph1LPaperture);
            
        end
        Screen('DrawDots', w, [xc yc+ex.yoffset], ex.fixSize, [255 255 255], [], 2);
        %% Draw Test stimulus on the screen
        if length(ex.longFormBlocks(1:n))/60 >= ex.blockLength && length(ex.longFormBlocks(1:n))/60 < ex.blockLength+ex.testLength%(cnt/2 == 1 && GetSecs-time >= 0) && c ~= length(ex.condShuffle)
            
            
            ex.lcLRect =  CenterRectOnPoint([0 0 ex.rawProbeWidth ex.rawProbeHeight],xc-ex.xoffset,yc-ex.yoffset);
            % test stim
            Screen('DrawTexture', w, ex.testStimID(1,l),[],ex.lcLRect,[],[],[]);
            %Fixation
            Screen('DrawDots', w, [xc yc+ex.yoffset], ex.fixSize, [255 255 255], [], 2);
            
        end
        
        %%%%%%%%%%% FLIP %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
        if n == 1
            [VBLT, ex.startTrial, FlipT, missed] = Screen(w, 'Flip', 0);%[VBLTimestamp StimulusOnsetTime FlipTimestamp Missed] = Screen('Flip', windowPtr [, when] [, dontclear]...
            flipTimes = ex.startTrial;
            
        else
            [VBLT,flipTime, FlipT, missed] = Screen(w, 'Flip',ex.startTrial + ex.trialFlips(n) - slack); %,   %%% ex.flipTime(n,c)
            flipTimes = [flipTimes, flipTime];
            
        end
        
        
        if length(ex.longFormBlocks(1:n))/60 == ex.blockLength+ex.testLength && c ~= length(ex.condShuffle) %(cnt/2 == 1 && GetSecs-time >= ex.blockLength+ex.testLength) && c ~= length(ex.condShuffle)
            WaitSecs(ex.ITI1);
            %             [ex.respT(cnt),~,~] =KbWait(deviceNumber,2);
            DrawFormattedText(w,'Press Space whenever \n\n you feel ready',(4/5)*xc, yc/2,[0 0 0]); %left instruction
            %% Fixation
            Screen('DrawDots', w, [xc yc+ex.yoffset], ex.fixSize, [255 255 255], [], 2);
            Screen(w, 'Flip', 0);
            [~,~,~] =KbWait(deviceNumber,2);
            Screen('FillRect', w, ex.stim.backgroundLum(ceil(ex.condShuffle(c+1)/2),:));
            Screen('DrawDots', w, [xc yc+ex.yoffset], ex.fixSize, [255 255 255], [], 2);
            Screen(w, 'Flip', 0);
            WaitSecs(ex.ITI2);
            cnt = cnt+1;
        end
        if mod(cnt,10) == 0 && cnt >=1
            WaitSecs(ex.ITI3);
            cnt = 0;
        end
        KbQueueStop();
        [pressed, firstPress]= KbQueueCheck();
        if  (pressed == 1) && ((firstPress(KbName('4$')) > 0 ||(firstPress(KbName('4')) > 0)) || (firstPress(KbName('1!')) > 0 || firstPress(KbName('1')) > 0) || (firstPress(KbName('0)')) > 0 || firstPress(KbName('0')) > 0)) %%|| (firstPress(KbName('4$')) > 0 || firstPress(KbName('4')) > 0)
            ex.responses = [ex.responses, 1];
            if (firstPress(KbName('4')) > 0)
                ex.correctResp = [ex.correctResp, 1];
                ex.responseTimes = [ex.responseTimes, firstPress(KbName('4')) - ex.startRun];
            elseif (firstPress(KbName('1')) > 0)
                ex.correctResp = [ex.correctResp, 2];
                ex.responseTimes = [ex.responseTimes, firstPress(KbName('1')) - ex.startRun];
            elseif (firstPress(KbName('0')) > 0)
                ex.correctResp = [ex.correctResp, 3];
                ex.responseTimes = [ex.responseTimes, firstPress(KbName('0')) - ex.startRun];
            end
            pressed = 0;
        end
        %%%% refresh queue for next character
        KbQueueFlush();
        f = f+1;
        n = n+1;
        if f == ex.flipsPerSec/ex.stim.cycPerSec
            f = 1;
        end
    end
    
    ex.flipTime(:,c) = flipTimes;
    n = 1;
end

%%%%%%%%%%%%%%%%%%
% done! wrap up  %
%%%%%%%%%%%%%%%%%%

ex.runTime = GetSecs - ex.startRun;

savedir = fullfile(ex.root,'data/dyn_MAE',sprintf('%s/%s_%s/',ex.version,subject,ex.version));
if ~exist(savedir); mkdir(savedir); end
savename = fullfile(savedir, strcat(sprintf('/%s_dyn_MAE_%s_date%s_fix',subject,ex.version,num2str(ex.date)), '.mat'));
%save(savename,'ex');
save(savename,'ex','-v7.3')

ShowCursor;
Screen('Close');
Screen('CloseAll');
fclose all;