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FearGen_eyelab.m
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function [p]=FearGen_eyelab(subject,phase,csp,PainThreshold)
%[p]=Conditioning(subject,NthSeq,CSpface,phase,PainThreshold)
%
%Used for the last recording (3rd Scan Request) sessions of the Feargen
%project. Mainly different in loading the precomputed sequences...
%
%
if nargin ~= 4
fprintf('Wrong number of inputs\n');
keyboard;
end
csn = mod( csp + 8/2-1, 8)+1;
ListenChar(2);%disable pressed keys to be spitted around
commandwindow;
%clear everything
clear mex global functions
cgshut;
global cogent;
%%%%%%%%%%%load the GETSECS mex files so call them at least once
GetSecs;
WaitSecs(0.001);
%
el = [];
p = [];
SetParams;
fprintf('length: %d',length(p.presentation.cond_id))
[p.presentation.cond_id'; p.presentation.stim_id'; p.presentation.ucs';p.presentation.oddball']
unique(p.presentation.stim_id)
pause(5);
debug = 0;%debug mode
SetPTB;
%
%init all the variables
t = [];
nTrial = 0;
%%
%Time Storage
TimePulse1 = [];
TimePulse2 = [];
TimeStimOnset = [];
TimeCrossJumpTime = [];
TimeEndStim = [];
TimeStartShock = [];
TimeTrackerOff = [];
TimeTrackerOn = [];
TimeCrossOn = [];
p_var_ExpPhase = [];
p_var_event_count = 0;
%%
InitEyeLink;
WaitSecs(2);
%calibrate if we are at the scanner computer.
if strcmp(p.hostname,'triostim1') || strcmp(p.hostname,'etpc');
CalibrateEL;
end
%save again the parameter file
save(p.path.path_param,'p');
if phase == 1
ShowInstruction(1,1);
elseif phase == 2
%
p_var_ExpPhase = phase;
ShowInstruction(101,1);
ShowInstruction(2,1);
ShowInstruction(3,1);
ShowInstruction(4,1);
ConfirmIntensity;
ShowInstruction(5,1);%will wait for keypresses
PresentStimuli;
AskStimRating;%make sure that scanner doesnt stop prematurely asa the stim offset
elseif phase == 3
%
p_mrt_on = 0;
p_var_ExpPhase = phase;
%
ShowInstruction(6,1);%will not wait for keypresses
%
PresentStimuli;
%
%makee sure that scanner doesnt stop prematurely asa the stim offset
AskStimRating;
elseif phase == 4
p_mrt_on = 0;
p_var_ExpPhase = phase;
%
ShowInstruction(6,1);%will not wait for keypresses
PresentStimuli;
%makee sure that scanner doesnt stop prematurely asa the stim offset
AskStimRating;
%makee sure that scanner doesnt stop prematurely asa the stim offset
fprintf('Finished with the rating\n');
%AskWhichFace;
end
%get the eyelink file back to this computer
StopEyelink(p.path.edf);
%trim the log file and save
p.out.log = p.out.log(sum(isnan(p.out.log),2) ~= size(p.out.log,2),:);
%shift the time so that the first timestamp is equal to zero
p.out.log(:,1) = p.out.log(:,1) - p.out.log(1);
p.out.log = p.out.log;%copy it to the output variable.
save(p.path.path_param,'p');
%
%move the file to its final location.
movefile(p.path.subject,p.path.finalsubject);
%close everything down
cleanup;
function ConfirmIntensity
%Compute the intensity we want to deliver to the subject.
p.var.ShockIntensity = p.out.PainThreshold*p.out.ShockFactor;
%
ShowInstruction(9,1);
%
fprintf([repmat('=',1,50) '\n']);
fprintf('TEST SHOCK:\n');
fprintf('!!! ADJUST THE SHOCK INTENSITY ON THE DIGITIMER !!!\n');
fprintf(' The intensity is now: %g mA\n',p.var.ShockIntensity);
fprintf(' Experimenter: Press any key to deliver a shock.\n');
fprintf([repmat('=',1,50) '\n']);
%
[secs, keyCode, deltaSecs] = KbStrokeWait;
ShowInstruction(10,0);%shock is coming message...
t = GetSecs + p.duration.shock;
MarkCED( p.com.lpt.address, p.com.lpt.shock );
while GetSecs < t;
Buzz;
end
%
message = 'Bewege den "Zeiger" mit der rechten und linken Pfeiltaste\n und bestätige deine Einschätzung mit der mit der oberen Pfeiltaste.';
rect = [p.ptb.width*0.2 p.ptb.midpoint(2) p.ptb.width*0.6 100];
response = RatingSlider(rect,2,1,p.keys.increase,p.keys.decrease,p.keys.confirm,{ 'nicht\nerträglich' 'erträglich'},message,0);
if response == 2
fprintf('All is fine :)\n');
fprintf('Subject confirmed the shock intensity inside the scanner...\n')
fprintf('INTENSITY TO BE USED FOR THE MAIN EXPERIMENT: %g mA\n',p.var.ShockIntensity);
p.out.ShockIntensity = p.var.ShockIntensity;
return;
elseif response == 1
fprintf('Shit... :(, %g is too much for the subject\n',p.var.ShockIntensity);
fprintf('We will try a little milder intensity.\n');
p.out.ShockFactor = p.out.ShockFactor - 0.05;
ConfirmIntensity;
end
end
function PresentStimuli
%Enter the presentation loop and wait for the first pulse to
%arrive.
%
TimeEndStim = GetSecs;
for nTrial = 1:p.presentation.tTrial;
%
%Get the variables that Trial function needs.
stim_id = p.presentation.stim_id(nTrial);
%
fix = p.presentation.CrossPosition(nTrial,:);
ISI = p.presentation.isi(nTrial);
ucs = p.presentation.ucs(nTrial);
oddball = p.presentation.oddball(nTrial);
prestimdur = p.duration.prestim+rand(1)*.25;
dist = p.presentation.dist(nTrial);
%prestimdur = p_presentation_prestim_dur(nTrial);
fprintf('%d of %d, S: %d, ISI: %d, UCS: %d, ODD: %d.\n',nTrial,p.presentation.tTrial,stim_id,ISI,ucs,oddball);
%
OnsetTime = TimeEndStim + ISI-p.duration.stim ;
% jetz = GetSecs;
% if mod(nTrial,100) == 0
% ShowInstruction(14,1);
% OnsetTime = OnsetTime + GetSecs - jetz;
% end
KbQueueStart(p.ptb.device);%monitor keypresses...
%Start with the trial, here is time-wise sensitive must be
%optimal
[TimeEndStim]= Trial(nTrial,OnsetTime, prestimdur, stim_id , ucs , fix , oddball,dist);
%
[keypressed, firstPress]=KbQueueCheck(p.ptb.device);
%if the press was after stimulus onset and before stimulus
%offset
if keypressed && (firstPress(p.keys.confirm) > OnsetTime) && (firstPress(p.keys.confirm) < TimeEndStim)
p.out.response(nTrial) = 1;
Log(firstPress(p.keys.confirm),7,NaN);%log the key press for hit detection.
fprintf('Subject Pressed the Hit Key!!\n');
end
% if (phase == 4 && nTrial == ceil(p.presentation.tTrial/2))
% ShowInstruction(14,1)
% CalibrateEL;
% end
end
end
function [TimeEndStim]=Trial(nTrial,TimeStimOnset , prestimdur, stim_id , ucs , fix , oddball, dist )
%get all the times
TimeCrossOnset = TimeStimOnset - prestimdur;
TimeEndStim = TimeStimOnset + p.duration.stim;
TimeStartShock = TimeStimOnset + p.duration.onset2shock;
TimeTrackerOff = TimeStimOnset + p.duration.keep_recording;
%% Fixation Onset
FixCross = [fix(1)-1,fix(2)-20,fix(1)+1,fix(2)+20;fix(1)-20,fix(2)-1,fix(1)+20,fix(2)+1];
Screen('FillRect', p.ptb.w, [255,255,255], FixCross');
TimeCrossOn = Screen('Flip',p.ptb.w,TimeCrossOnset,0);
MarkCED( p.com.lpt.address, p.com.lpt.FixOnset );
Eyelink('Message', 'FX Onset at %d %d',fix(1),fix(2));
Log(TimeCrossOn,1,stim_id);%cross onset.
%turn the eye tracker on
StartEyelinkRecording(nTrial,stim_id,p_var_ExpPhase,dist,oddball,ucs,fix);
%% Draw the stimulus to the buffer
if ~stim_id==0
Screen('DrawTexture', p.ptb.w, p.ptb.stim_sprites(stim_id));
end
%Screen('DrawText' , p.ptb.w, double('+'), p.ptb.CrossPosition_x,fix, p.stim.white);
% if oddball%add freckles to the face
% x = randn(1,100)*35;
% y = randn(1,100)*10;
% s = rand(1,100);%[0 1]
% Screen('DrawDots',p.ptb.w,[x;y],1+s.*1.5,[100 100 100 160],p.ptb.midpoint,1);
% %the dots size
% end
Screen('DrawingFinished',p.ptb.w,0);
%% STIMULUS ONSET
%Here we wait only for the next pulse.
%The proper amount is obtained with the second call of WaitPulse
%below, before the onset of the fixation cross.
%fprintf('Will Wait for the pulse to Stim Onset\n');
TimeStimOnset = Screen('Flip',p.ptb.w,TimeStimOnset,0);%asap and dont clear
%send eyelink and ced a marker asap
Eyelink('Message', 'Stim Onset');
Eyelink('Message', 'SYNCTIME');
MarkCED( p.com.lpt.address, p.com.lpt.StimOnset );
if oddball
MarkCED( p.com.lpt.address, p.com.lpt.oddball );
end
Log(TimeStimOnset,2,stim_id);%log the stimulus onset
if ucs == 1
%%%%%%%%%%%%%%%%%%%%%%%
%Deliver shock and stim off immediately
TimeStartShock = WaitSecs('UntilTime',TimeStartShock);
MarkCED( p.com.lpt.address, p.com.lpt.shock );
Eyelink('Message', 'UCS Onset');
while GetSecs < TimeEndStim;
Buzz;%this is anyway sent to CED.
end
Eyelink('Message', 'UCS Offset');
end
%% STIM OFF immediately
TimeEndStim = Screen('Flip',p.ptb.w,TimeEndStim,0);
%send eyelink and ced a marker
Eyelink('Message', 'Stim Offset');
Eyelink('Message', 'BLANK_SCREEN');
Screen('Textsize', p.ptb.w,p.text.fontsize);
Log(TimeEndStim,-2,stim_id);%log the stimulus offset
%
%% record some more eye data after stimulus offset.
WaitSecs('UntilTime',TimeTrackerOff);
TimeTrackerOff = StopEyelinkRecording;
if oddball == 1
fprintf('This was an oddball trial!\n');
end
if ucs == 1
fprintf('This was a UCS trial!\n');
Log(TimeStartShock,4,NaN);%UCS delivery...This is done here to not waste time there
end
end
function SetParams
%
p.var.timings = zeros(1,10);
p_var_event_count = 0;
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%relative path to stim and experiments
%Path Business.
[~, hostname] = system('hostname');
p.hostname = deblank(hostname);
if strcmp(p.hostname,'triostim1')
p.path.baselocation = 'C:\USER\onat\Experiments\';
elseif strcmp(p.hostname,'etpc')
p.path.baselocation = 'C:\Users\onat\Documents\Experiments\';
else
p.path.baselocation = 'C:\Users\onat\Documents\Experiments\';
end
p.path.experiment = [p.path.baselocation 'feargen_master' filesep];
p.path.stim = 'C:\Users\onat\Documents\Experiments\feargen_master\stim\';
p.path.stim24 = [p.path.stim '24bit8' '\'];
%
p.subID = sprintf('sub%02d',subject);
p.path.edf = sprintf([p.subID 'p%02d' ],phase);
timestamp = datestr(now,30);
p.path.subject = [p.path.experiment 'data\tmp\' p.subID '_' timestamp '\'];
p.path.finalsubject = [p.path.experiment 'data\' p.subID '_' timestamp '\' ];
%create folder hierarchy
mkdir(p.path.subject);
mkdir([p.path.subject 'scr']);
mkdir([p.path.subject 'eye']);
mkdir([p.path.subject 'stimulation']);
mkdir([p.path.subject 'midlevel']);
p.path.path_param = sprintf([regexprep(p.path.subject,'\\','\\\') 'stimulation\\param_phase_%02d'],phase);
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%get stim files
[p.stim.files p.stim.label] = FileMatrix([p.path.stim '*.bmp']);
p.stim.tFile = size(p.stim.files,1);%number of different files (including the UCS symbol)
p.stim.tFace = p.stim.tFile - 1;%number of faces.
%
display([mat2str(p.stim.tFile) ' found in the destination.']);
%set the background gray according to the background of the stimuli
for i = 1:p.stim.tFile;
im = imread(p.stim.files(i,:));
bg(i) = im(1,1,1);
end
%is all the captured bg values the same?
if sum(diff(bg))==0;
%if so take it as the bg color
p.stim.bg = double([bg(1) bg(1) bg(1)]);
else
fprintf('background luminance was not successfully detected...\n')
keyboard;
end
%bg of the rating screen.
p.stim.bg_rating = [0 128 0];
%
%font size and background gray level
p.text.fontname = 'Times New Roman';
p.text.fontsize = 18;%30;
p.text.fixsize = 60;
%rating business
p.rating.division = 10;%number of divisions for the rating slider
p.rating.repetition = 2;%how many times a given face has to be repeated...
%
p.stim.white = [255 255 255];
%get the actual stim size (assumes all the same)
info = imfinfo(p.stim.files(1,:));
p.stim.width = info.Width;
p.stim.height = info.Height;
if strcmp(p.hostname,'triostim1')
p.keys.confirm = KbName('7');
p.keys.increase = KbName('8');
p.keys.decrease = KbName('6');
p.keys.space = KbName('space');
p.keys.esc = KbName('esc');
else
%All settings for laptop computer.
p.keys.confirm = KbName('up');
p.keys.increase = KbName('right');
p.keys.decrease = KbName('left');
p.keys.space = KbName('space');
p.keys.esc = KbName('esc');
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Communication business
%parallel port
p.com.lpt.address = 888;
%codes for different events
p.com.lpt.InitExperiment = 64;%which is all channels without digitimer
p.com.lpt.FixOnset = 4;
p.com.lpt.StimOnset = 8;
p.com.lpt.shock = 16;
p.com.lpt.oddball = 32;
p.com.lpt.keypress = 2;
p.com.lpt.digitimer = 128;
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%timing business
%these are the intervals of importance
%time2fixationcross->cross2onset->onset2shock->shock2offset
%these (duration.BLA) are average duration values:
p.duration.stim = 0.6;%2;%s
p.duration.shock = 0.1;%s;x
p.duration.shockpulse = 0.005;%ms; duration of each individual pulses
p.duration.intershockpulse = 0.01;%ms; and the time between each pulse
p.duration.onset2shock = p.duration.stim - p.duration.shock;
p.duration.crossmoves = p.duration.stim./2;
p.duration.keep_recording = 0.25;%this is the time we will keep recording (eye data) after stim offset.
p.duration.prestim_ori = .95;
%p.duration.prestim = 2-p.duration.prestim_ori;%that is 0.95 seconds
p.duration.prestim = .85;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%stimulus sequence
seqpool = load('C:\Users\onat\Documents\Experiments\feargen_master\seq\seq.mat');
seq = seqpool.s(phase,csp,RandSample(1:size(seqpool.s,3),[1 1]));
clear seqpool
% if phase == 2
% seq = seq_feargen_cloudseq(csp,'baseline');%only 1 short seq
% elseif phase == 3%conditioning
% seq = seq_feargen_cloudseq(csp,'cond');%gets 1 short seq
% elseif phase == 4
% seq = seq_feargen_cloudseq(csp,'test');%gets 2 short seqs
% end
%create the randomized design
p.stim.cs_plus = csp;%index of cs stimulus, this is the one paired to shock
p.stim.cs_neg = csn;
%Record which Phase are we going to run in this run.
p.stim.phase = phase;
%this will deal all the presentation sequence related information
p.presentation = seq;
p.out.rating = [];
p.out.log = zeros(1000000,4).*NaN;
p.out.response = zeros(p.presentation.tTrial,1);
p.out.PainThreshold = PainThreshold;
p.out.ShockFactor = 2;
%Save the stuff
save(p.path.path_param,'p');
%
function [FM labels] = FileMatrix(path)
%Takes a path with file extension associated to regexp (e.g.
%C:\blabl\bla\*.bmp) returns the file matrix
dummy = dir(path);
FM = [repmat([fileparts(path) filesep],length(dummy),1) vertcat(dummy(:).name)];
labels = {dummy(:).name};
end
end
function AskStimRating
MarkCED( p.com.lpt.address, p.com.lpt.InitExperiment);
%
p_var_ExpPhase = 5;
BG = p.stim.bg;%
p.stim.bg = p.stim.bg_rating;
nseq = 0;
rating_seq = [];
pos1_seq = [];
%
while nseq < p.rating.repetition
nseq = nseq + 1;
rating_seq = [ rating_seq Shuffle(1:p.stim.tFile-2)'];
end
message = GetText(11);
SliderTextL = GetText(13);
SliderTextR = GetText(12);
%
Screen('FillRect', p.ptb.w , p.stim.bg);
Screen('Flip',p.ptb.w);
WaitSecs(2);
%
ShowInstruction(7,1);
rect = [p.ptb.width*0.2 p.ptb.midpoint(2) p.ptb.width*0.6 100];
tRatend = length(rating_seq);
%save the rating sequence just for security
p.out.rating_seq = rating_seq;
for nRatend = 1:tRatend;
%
%the variable that are used by Trial function
stim_id = rating_seq(nRatend);
fix = p.presentation.CrossPosition(nRatend,:);
%
next_stim_id = [];%this is a trick, otherwise a fixation cross appears right before the rating :(
next_pos1 = [];
%to send know the distance here, little dummy setup:
dummy = -135:45:180;
dist = dummy(stim_id);
%We will turn on the fixation cross and start the tracker
%for the first trial. These have to be done before the main
%for loop.
FixCross = [fix(1)-1,fix(2)-20,fix(1)+1,fix(2)+20;fix(1)-20,fix(2)-1,fix(1)+20,fix(2)+1];
Screen('FillRect', p.ptb.w, [255,255,255], FixCross');
t = Screen('Flip',p.ptb.w);
Screen('Textsize', p.ptb.w,p.text.fontsize);
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Mark the onset
Eyelink('Message', 'FX Onset at %d %d',fix(1),fix(2));
Log(t,1,fix(1));%log the mark onset...
Log(t,1,fix(2))
%
Trial(1000+nRatend,GetSecs+1,0.5,stim_id,0,fix,0,dist);
rate(nRatend,1) = RatingSlider(rect, p.rating.division, Shuffle(1:p.rating.division,1), p.keys.increase, p.keys.decrease, p.keys.confirm, {SliderTextL{1} SliderTextR{1}},message,1);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Verbose the rating of the subject
fprintf('============\nRating Results %d (%d/%d):\n', stim_id, nRatend, tRatend);
dummy = rating_seq(1:nRatend);%trials shown so far
for iii = 1:p.stim.tFile-2
r = round(mean(rate(dummy == iii)));
if isnan(r)
r = 0;
end
if iii == p.stim.cs_plus
fprintf('Stimulus %02d: * %s \n',iii,repmat('+',1,1+r));
else
fprintf('Stimulus %02d: %s \n',iii,repmat('+',1,1+r));
end
end
end
%sort the stim_ids and then sort the same the rates and make a
%matrix out of that to store
[~, i] = sort(rating_seq);
rate = reshape(rate(i),p.rating.repetition,p.stim.tFile-2)';
p.out.rating = rate;
save(p.path.path_param,'p');
Screen('FillRect',p.ptb.w,p.stim.bg);
p.stim.bg = BG;
%
save(p.path.path_param,'p');
end
function [rating] = RatingSlider(rect,tSection,position,up,down,confirm,labels,message,numbersOn)
%
%Detect the bounding boxes of the labels.
for nlab = 1:2
[~ , ~, bb(nlab,:)]=DrawFormattedText(p.ptb.w,labels{nlab}, 'center', 'center', p.stim.white,[],[],[],2);
Screen('FillRect',p.ptb.w,p.stim.bg);
end
bb = max(bb);
bb_size = bb(3)-bb(1);%vertical size of the bb.
%
DrawSkala;
ok = 1;
while ok == 1
[secs, keyCode, ~] = KbStrokeWait;
keyCode = find(keyCode);
Log(secs,7,keyCode);
if length(keyCode) == 1%this loop avoids crashes to accidential presses of meta keys
if (keyCode == up) || (keyCode == down)
next = position + increment(keyCode);
if next < (tSection+1) && next > 0
position = position + increment(keyCode);
%rating = tSection - position + 1;
end
DrawSkala;
elseif keyCode == confirm
MarkCED( p.com.lpt.address, p.com.lpt.keypress);
WaitSecs(0.1);
ok = 0;
Screen('FillRect',p.ptb.w,p.stim.bg);
t=Screen('Flip',p.ptb.w);
end
end
end
function DrawSkala
%rating = tSection - position + 1;
rating = position ;
increment([up down]) = [1 -1];%delta
tick_x = linspace(rect(1),rect(1)+rect(3),tSection+1);%tick positions
tick_size = rect(3)./tSection;
ss = tick_size/5*0.9;%slider size.
%
for tick = 1:length(tick_x)%draw ticks
Screen('DrawLine', p.ptb.w, [255 0 0], tick_x(tick), rect(2), tick_x(tick), rect(2)+rect(4) , 3);
if tick <= tSection && numbersOn
Screen('TextSize', p.ptb.w,p.text.fontsize./2);
DrawFormattedText(p.ptb.w, mat2str(tick) , tick_x(tick)+ss/2, rect(2)+rect(4), p.stim.white);
Screen('TextSize', p.ptb.w,p.text.fontsize);
end
if tick == 1
DrawFormattedText(p.ptb.w, labels{1},tick_x(tick)-bb_size*1.4,rect(2), p.stim.white);
elseif tick == tSection+1
DrawFormattedText(p.ptb.w, labels{2},tick_x(tick)+bb_size*0.4,rect(2), p.stim.white);
end
end
%slider coordinates
slider = [ tick_x(position)+tick_size*0.1 rect(2) tick_x(position)+tick_size*0.9 rect(2)+rect(4)];
%draw the slider
Screen('FillRect',p.ptb.w, p.stim.white, round(slider));
Screen('TextSize', p.ptb.w,p.text.fontsize./2);
DrawFormattedText(p.ptb.w,message, 'center', p.ptb.midpoint(2)*0.2, p.stim.white,[],[],[],2);
Screen('TextSize', p.ptb.w,p.text.fontsize);
t = Screen('Flip',p.ptb.w);
Log(t,6,NaN);
end
end
function ShowInstruction(nInstruct,waitforkeypress)
%ShowInstruction(nInstruct,waitforkeypress)
%if waitforkeypress is 1, then subject has to press a button to
%make the instruction text dissappear. Otherwise you have to take
%care of it later
[text]= GetText(nInstruct);
ShowText(text);
%let subject read it and ask confirmation to proceed. But we don't
%need that in the case of INSTRUCT = 5;
if waitforkeypress
if nInstruct ~= 10%this is for the Reiz kommnt
KbStrokeWait;
else
WaitSecs(2.5+rand(1));
end
Screen('FillRect',p.ptb.w,p.stim.bg);
t = Screen('Flip',p.ptb.w);
Log(t,-5,nInstruct);
else
if nInstruct ~= 10%this is for the Reiz kommnt
KbStrokeWait;
else
WaitSecs(1+rand(1));
end
end
function ShowText(text)
Screen('FillRect',p.ptb.w,p.stim.bg);
%DrawFormattedText(p.ptb.w, text, p.text.start_x, 'center',p.stim.white,[],[],[],2,[]);
DrawFormattedText(p.ptb.w, text, 'center', 'center',p.stim.white,[],[],[],2,[]);
t=Screen('Flip',p.ptb.w);
Log(t,5,nInstruct);
%show the messages at the experimenter screen
fprintf('=========================================================\n');
fprintf('Text shown to the subject:\n');
fprintf('=========================================================\n');
fprintf(text);
fprintf('=========================================================\n');
end
end
function [text]=GetText(nInstruct)
if nInstruct == 0%Eyetracking calibration
text = ['Um Ihre Augenbewegungen zu messen, \n' ...
'müssen wir jetzt den Eye-Tracker kalibrieren.\n' ...
'Dazu zeigen wir Ihnen einige Punkte auf dem Bildschirm, \n' ...
'bei denen Sie sich wie folgt verhalten:\n' ...
'Bitte fixieren Sie den kleinen weißen Kreis und \n' ...
'bleiben so lange darauf, wie es zu sehen ist.\n' ...
'Bitte drücken Sie jetzt den oberen Knopf, \n' ...
'um mit der Kalibrierung weiterzumachen.\n' ...
];
elseif nInstruct == 1%first Instr. of the training phase.
text = ['Wir werden nun als erstes einen Übungsdurchgang machen,\n' ...
'damit Sie sich an Ihre Aufgabe gewöhnen können.\n' ...
'In diesem Durchgang können Sie sich vollkommen sicher fühlen,\n' ...
'es werden keine elektrischen Reize verabreicht.\n' ...
'Eine wichtige grundsätzliche Regel ist, dass Sie das Fixationskreuz (das +)\n' ...
'wenn es zu sehen ist, mit Ihren Augen fixieren. \n' ...
'Drücken Sie die obere Taste um fortzufahren.\n' ...
];
elseif nInstruct == 101%first Instr. of the training phase.
text = ['Willkommen zum zweiten Teil des Experiments.\n'...
'Eine wichtige grundsätzliche Regel ist auch hier,\n'...
'dass Sie das Fixationskreuz (das +)\n' ...
'wenn es zu sehen ist, mit Ihren Augen fixieren. \n' ...
'Drücken Sie die obere Taste um fortzufahren.\n' ...
];
elseif nInstruct == 2%second Instr. of the training phase.
text = ['Ein paar Bemerkungen zu den Zielreizen: \n' ...
'Zur Erinnerung: Zielreize sind die verschwommenen Gesichter.\n' ...
'Sobald ein solcher Zielreiz erscheint, \n' ...
'sollen Sie schnellstmöglich die obere Taste drücken, \n' ...
'und zwar bevor der Reiz wieder verschwunden ist \n' ...
'(Sie müssen also sehr schnell und aufmerksam sein).' ...
];
elseif nInstruct == 3%third Instr. of the training phase.
text = ['Es ist sehr wichtig, dass Sie Ihren Kopf während \n' ...
'des Experiments nicht bewegen. \n' ...
'Das ist besonders wichtig für die Qualität der Messung.\n' ...
];
elseif nInstruct == 4%third Instr. of the training phase.
text = ['Vor dem Experiment legen wir nun \n' ...
'die Schockintensität für den Rest des Experiments fest. \n' ...
'Drücken Sie die obere Taste um fortzufahren.' ...
];
elseif nInstruct == 5%Baseline Phase
%
%
%=================================================================================================================%
text = ['Jetzt geht es mit dem Experiment los.\n' ...
'Ihre Aufgabe ist es jetzt, die Gesichter, \n' ...
'die Ihnen gezeigt werden aufmerksam zu betrachten und \n' ...
'den oberen Knopf zu drücken, sobald Sie einen Zielreiz sehen.\n' ...
'\n'...
'Hin und wieder erscheint ein Symbol (ein Blitzpfeil, der vor Strom warnt), \n' ...
'das einen elektrischen Reiz ankündigt. \n' ...
'Die Reize erfolgen aber nur bei diesem Symbol, nicht bei den Gesichtern! \n' ...
'Bei Gesichtern können Sie sich also sicher fühlen.\n' ...
'Bitte denken Sie daran: 1. Fixationskreuz fixieren und 2. nicht bewegen!\n\n' ...
'Sie können das Experiment nun durch Drücken der oberen Taste starten. \n' ...
];
elseif nInstruct == 6%Test and Conditioning Phase
%=================================================================================================================%
text = ['Auch im nun folgenden Teil des Experiments \n' ...
'sollen Sie die Gesichter aufmerksam betrachten und \n' ...
'den oberen Knopf drücken, sobald Sie einen Zielreiz sehen. \n' ...
'Wie im ersten Teil des Experiments sollen Sie \n' ...
'das Fixationskreuz immer fixieren. \n' ...
'In dieser Phase des Experiments werden Sie\n' ...
'gelegentlich elektrische Reize bekommen.\n\n' ...
'Die elektrischen Reize folgen jetzt auf bestimmte Gesichter. \n' ...
];
elseif nInstruct == 7;%rating
text = ['In dieser Phase hätten wir gerne, dass Sie die Gesichter\n'...
'im Hinblick auf folgende Frage bewerten:\n'...
'Wie wahrscheinlich ist es, bei dem gerade gesehenen Gesicht \n'...
'einen elektrischen Schock zu erhalten?\n'...
'Bewegen Sie den Zeiger mit der rechten und linken Pfeiltaste \n'...
'und bestätigen Sie Ihre Einschätzung mit der oberen Pfeiltaste.\n'...
];
elseif nInstruct == 8 %CS+ detection
text = ['Du bekommen nun eine Reihe von Gesichtern gezeigt.\n' ...
'Bitte wählen Sie das Gesicht aus bei dem der Schock verabreicht wurde.\n'...
'Drücken Sie die obere Taste um fortzufahren.\n'...
];
elseif nInstruct == 9%
%=================================================================================================================%
text = ['Bitte geben Sie an, ob die Reizstärke des folgenden Schocks\n für Sie erträglich ist.\n'...
'\n'...
'Drücken Sie bitte die obere Taste um den Reiz zu bekommen.\n'...
];
elseif nInstruct == 10%just before the shock
text = ['Reiz kommt...\n'];
elseif nInstruct == 11%this is the rating question
text = ['Wie wahrscheinlich ist es, bei dem gerade gesehenen Gesicht \n'...
'einen elektrischen Schock zu erhalten?\n' ...
'Bewegen Sie den "Zeiger" mit der rechten und linken Pfeiltaste\n' ...
'und bestätigen Sie Ihre Einschätzung mit der mit der oberen Pfeiltaste'...
];
elseif nInstruct == 12 %These two below are the possible responses to the question in 11
text = {'Sehr\nwahrscheinlich'};
elseif nInstruct == 13
text = {'Überhaupt\nnicht\nwahrscheinlich'};
elseif nInstruct == 14
text = ['Bitte machen Sie eine kurze Pause.\n' ...
'Sie können hierbei gern die Augen einen Moment schließen.\n'...
'Drücken Sie anschließend die obere Taste um fortzufahren.\n'...
'Wir werden dann den Eyetracker noch einmal kalibrieren.\n'...
];
else
text = {''};
end
end
function SetPTB
%Sets the parameters related to the PTB toolbox. Including
%fontsizes, font names.
%Find the number of the screen to be opened
screens = Screen('Screens');
p.ptb.screenNumber = 1;%the maximum is the second monitor
%Make everything transparent for debugging purposes.
if debug
commandwindow;
PsychDebugWindowConfiguration;
end
%Default parameters
Screen('Preference', 'SkipSyncTests', 1);
Screen('Preference', 'DefaultFontSize', p.text.fontsize);
Screen('Preference', 'DefaultFontName', p.text.fontname);
Screen('Preference', 'TextAntiAliasing',2);%enable textantialiasing high quality
Screen('Preference', 'VisualDebuglevel', 0);
Screen('Preference', 'SkipSyncTests', 1);
Screen('Preference', 'SuppressAllWarnings', 1);
%set the resolution correctly
if strcmp(p.hostname,'triostim1')
p.ptb.oldres = Screen('resolution',p.ptb.screenNumber,1280,960);
%hide the cursor
HideCursor(p.ptb.screenNumber);
elseif strcmp(p.hostname,'etpc')
p.ptb.oldres = Screen('resolution',p.ptb.screenNumber,1600,1200);
%hide the cursor
HideCursor(p.ptb.screenNumber);
end
%Open a graphics window using PTB
p.ptb.w = Screen('OpenWindow', p.ptb.screenNumber, p.stim.bg);
Screen('BlendFunction', p.ptb.w, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
Screen('Flip',p.ptb.w);%make the bg
p.ptb.slack = Screen('GetFlipInterval',p.ptb.w)./2;
[p.ptb.width, p.ptb.height] = Screen('WindowSize', p.ptb.screenNumber);
if sum([p.ptb.width p.ptb.height] - [1280 960]) ~= 0
fprintf('SET THE CORRECT SCREEN RESOLUTION\n');
end
%find the mid position on the screen.
p.ptb.midpoint = [ p.ptb.width./2 p.ptb.height./2];
p.ptb.imrect = [ p.ptb.midpoint(1)-p.stim.width/2 p.ptb.midpoint(2)-p.stim.height/2 p.stim.width p.stim.height];
% %compute the cross position.
% [~, ny bb] = DrawFormattedText(p.ptb.w,'+','center','center');
% p.ptb.cross_shift = [45 60];%incremental upper and lower cross positions
% p.ptb.CrossPosition_y = p.ptb.midpoint(2)%[ny-p.ptb.cross_shift(1) ny+p.ptb.cross_shift(2) ];
p.ptb.CrossPosition_x = p.ptb.midpoint(1);%bb(1);%always the same
% %cross position for the eyetracker screen.
% p.ptb.CrossPositionET_x = [p.ptb.midpoint(1) p.ptb.midpoint(1)];
% p.ptb.CrossPositionET_y = [p.ptb.midpoint(2)-p.ptb.cross_shift(2) p.ptb.midpoint(2)+p.ptb.cross_shift(2)];
% %%
[nx, ny bb] = DrawFormattedText(p.ptb.w,'+','center','center');
%cross position for the eyetracker screen.
% p.ptb.CrossPositionET_x = [p.ptb.midpoint(1) p.ptb.midpoint(1)];
% p.ptb.CrossPositionET_y = [p.ptb.midpoint(2)-p.ptb.cross_shift(2) p.ptb.midpoint(2)+p.ptb.cross_shift(2)];
%%
%priorityLevel=MaxPriority(['GetSecs'],['KbCheck'],['KbWait'],['GetClicks']);
Priority(MaxPriority(p.ptb.w));
%this is necessary for the Eyelink calibration
InitializePsychSound(0)
%sound('Open')
Beeper(5000)
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%set serial communication channels
IOPort('CloseAll');
p.com.serial = IOPort('OpenSerialPort', 'COM1', 'InputBufferSize=51840000 HardwareBufferSizes=32768,32768 Terminator=0 ReceiveLatency=0.0001 BaudRate=9600 ReceiveTimeout=7');
IOPort('ConfigureSerialPort', p.com.serial, 'BlockingBackgroundRead=1');
%because of the BlockingBackgroundRead=1, the flush and close all
%command will wait for the next byte to arrive...
IOPort('ConfigureSerialPort', p.com.serial, 'StartBackgroundRead=2');
IOPort('Flush', p.com.serial);
%2 is the granularity of the data, cogent box sends 2 bytes.
%IOPort('ConfigureSerialPort', p.com.serial, 'ReadTimeout=5');
%%%%%%%%%%%%%%%%%%%%%%%%%%%Prepare the keypress queue listening.
p.ptb.device = -1;
p.ptb.keysOfInterest=zeros(1,256);
p.ptb.keysOfInterest(p.keys.confirm) = 1;
KbQueueCreate(p.ptb.device,p.ptb.keysOfInterest);%default device.
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%prepare parallel port communication. This relies on cogent i
%think. We could do it with PTB as well.
config_io;
outp(p.com.lpt.address,0);
if( cogent.io.status ~= 0 )
error('inp/outp installation failed');
end
%test whether CED receives the triggers correctly...
k = 0;
while k ~= 49;
outp(p.com.lpt.address,p.com.lpt.InitExperiment);pause(0.1);outp(p.com.lpt.address,0);%247 means all but the UCS channel (so that we dont shock the subject during initialization).
fprintf('=================\nDid the trigger test work?\nPress 0 to send it again, 1 to continue...\n')
[~, k] = KbStrokeWait;
k = find(k);
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%load the pictures to the memory.
p.ptb.stim_sprites = CreateStimSprites(p.stim.files);%
function [out]=CreateStimSprites(files)
%loads all the stims to video memory
for nStim = 1:p.stim.tFile
filename = files(nStim,:);
[im , ~, ~] = imread(filename);
out(nStim) = Screen('MakeTexture', p.ptb.w, im );
end
end
end
function [t]=StopEyelinkRecording
Eyelink('StopRecording');
t = GetSecs;
%this is the end of the trial scope.
WaitSecs(0.01);
Eyelink('Message', 'TRIAL_RESULT 0');
%
WaitSecs(0.01);
Eyelink('Command', 'set_idle_mode');
WaitSecs(0.01);
Eyelink('Command', 'clear_screen %d', 0);
Screen('Textsize', p.ptb.w,p.text.fontsize);
Log(t,-8,NaN);
end
function [t]=StartEyelinkRecording(nTrial,nStim,phase,dist,oddball,ucs,fix)
t = [];
if isnan(dist)
dist=3000;
end
nStim = double(nStim);
Eyelink('Message', 'TRIALID: %04d, PHASE: %04d, FILE: %04d, DELTACSP: %04d, ODDBALL: %04d, UCS: %04d, FIXX: %04d, FIXY %04d', nTrial, phase, nStim, dist, double(oddball), double(ucs),fix(1),fix(2));
% an integration message so that an image can be loaded as
% overlay background when performing Data Viewer analysis.
WaitSecs(0.01);
%return
if nStim~=0
Eyelink('Message', '!V IMGLOAD CENTER %s %d %d', p.stim.files(nStim,:), p.ptb.midpoint(1), p.ptb.midpoint(2));
end
% This supplies the title at the bottom of the eyetracker display
Eyelink('Command', 'record_status_message "Stim: %02d, Phase: %d"', nStim, phase);
%
%Put the tracker offline and draw the stimuli.
Eyelink('Command', 'set_idle_mode');
WaitSecs(0.01);
% clear tracker display and draw box at center
Eyelink('Command', 'clear_screen %d', 0);
%draw the image on the screen but also the two crosses
if (nStim <= 16 && nStim>0)
Eyelink('ImageTransfer',p.stim.files24(nStim,:),p.ptb.imrect(1),p.ptb.imrect(2),p.ptb.imrect(3),p.ptb.imrect(4),p.ptb.imrect(1),p.ptb.imrect(2));
end
% Eyelink('Command', 'draw_cross %d %d 15',p_ptb_CrossPositionET_x(1),p_ptb_CrossPositionET_y(1) );
% Eyelink('Command', 'draw_cross %d %d 15',p_ptb_CrossPositionET_x(2),p_ptb_CrossPositionET_y(2) );
Eyelink('Command', 'draw_cross %d %d 15',fix(1),fix(2));
%
%drift correction
%EyelinkDoDriftCorrection(el,crosspositionx,crosspositiony,0,0);
%start recording following mode transition and a short pause.
Eyelink('Command', 'set_idle_mode');
WaitSecs(0.01);
Eyelink('StartRecording');
t = GetSecs;
Log(t,8,NaN);
end
function shuffled = Shuffle(vector,N)
%takes first N from the SHUFFLED before outputting. This function
%could be used as a replacement for randsample
if nargin < 2;N = length(vector);end
[~, idx] = sort(rand([1 length(vector)]));
shuffled = vector(idx(1:N));
shuffled = shuffled(:);
end
function Buzz
outp(p.com.lpt.address, p.com.lpt.digitimer );
WaitSecs(p.duration.shockpulse);
outp(p.com.lpt.address, 0);
WaitSecs(p.duration.intershockpulse);
end
function MarkCED(socket,port)
%send pulse to SCR#
outp(socket,port);
WaitSecs(0.01);
outp(socket,0);
end
function InitEyeLink
%
if EyelinkInit(0)%use 0 to init normaly
fprintf('=================\nEyelink initialized correctly...\n')
else
fprintf('=================\nThere is problem in Eyelink initialization\n')
keyboard;
end
%
WaitSecs(0.5);
[~, vs] = Eyelink('GetTrackerVersion');
fprintf('=================\nRunning experiment on a ''%s'' tracker.\n', vs );
%load 24bits pictures for eyelink...
dummy = dir([p.path.stim24 '*.bmp']);
p.stim.files24 = [repmat([fileparts(p.path.stim24) filesep],length(dummy),1) vertcat(dummy(:).name)];
%
el = EyelinkInitDefaults(p.ptb.w);
%update the defaults of the eyelink tracker
el.backgroundcolour = p.stim.bg;
el.msgfontcolour = WhiteIndex(el.window);
el.imgtitlecolour = WhiteIndex(el.window);
el.targetbeep = 0;
el.calibrationtargetcolour = WhiteIndex(el.window);
el.calibrationtargetsize = 1.5;
el.calibrationtargetwidth = 0.5;
el.displayCalResults = 1;
el.eyeimgsize = 50;
el.waitformodereadytime = 25;%ms
el.msgfont = 'Times New Roman';
el.cal_target_beep = [0 0 0];%[1250 0.6 0.05];
%shut all sounds off
el.drift_correction_target_beep = [0 0 0];
el.calibration_failed_beep = [0 0 0];
el.calibration_success_beep = [0 0 0];
el.drift_correction_failed_beep = [0 0 0];
el.drift_correction_success_beep= [0 0 0];
EyelinkUpdateDefaults(el);
%PsychEyelinkDispatchCallback(el)
% open file.