MAP

function errormsg=nextStimulus(handles)

% Handles everything concerned with the stimulus presentation

%  called from startNewRun in subjGUI

global experiment stimulusParameters withinRuns betweenRuns

experiment.status='presentingStimulus';

errormsg='';

% interrupt by 'stop' button

if experiment.stop

    disp('******** experiment manually stopped  *****************')

    experiment.status= 'waitingForStart';

    addToMsg('manually stopped',1)

    return

end

% -----------------------------------------choose catch trials at random

% catch trials are for subject threshold measurements only

% this is the only place where withinRuns.catchTrial is set

if experiment.allowCatchTrials

    if withinRuns.trialNumber==1;

        % first trial is never a catch trial

        withinRuns.catchTrial=0;

        withinRuns.catchTrialCount=0;   % reset count on first trial

    elseif withinRuns.trialNumber==2 ...

            && withinRuns.catchTrialCount==0

        % second trial is always a catch trial

        withinRuns.catchTrial=1;

        withinRuns.catchTrialCount=1;   % this must be the first

    elseif withinRuns.thisIsRepeatTrial

        % for requested repeats do not change catch trial status

        withinRuns.thisIsRepeatTrial=0; % reset toggle

    else

        % choose whether or not to have a catch trial

        R=rand;

        if R<stimulusParameters.catchTrialRate

            % catch trial

            withinRuns.catchTrial=1;

            addToMsg('Catch Trial',1)

            withinRuns.catchTrialCount=withinRuns.catchTrialCount+1;

        else

            % not a catch trial

            withinRuns.catchTrial=0;

        end

    end

else

    % no catch trials for statistical evaluations or 2AIFC or (poss) MAP

    withinRuns.catchTrial=0;

end

%------------ during stimulus presentation show appropriate button images

switch experiment.ear

    case {'statsModelLogistic', 'statsModelRareEvent',...

            'MAPmodel', 'MAPmodelMultiCh', 'MAPmodelSingleCh'}

        % no buttons shown

    otherwise

        switch experiment.threshEstMethod

            case {'2I2AFC++', '2I2AFC+++'}

                %Except for 2I2AFC

                % For 2I2AFC the buttons on the screen ab initio

                set(handles.frame1,'visible','off')

                set(handles.pushbuttonGO,'visible','off')

                set(handles.pushbuttoNotSure,'visible','off')

                set(handles.pushbuttonWrongButton,'visible','off')

                set(handles.pushbutton3,'visible','off')

                set(handles.pushbutton0,'visible','off')

                set(handles.pushbutton1,'visible','on')

                set(handles.pushbutton2,'visible','on')

                drawnow

            otherwise

                % i.e. single interval/ maxLikelihood

                set(handles.frame1,'backgroundColor','w')

                set(handles.frame1,'visible','off')

                set(handles.pushbuttoNotSure,'visible','off')

                set(handles.pushbuttonWrongButton,'visible','off')

                set(handles.pushbutton3,'visible','off')

                set(handles.pushbutton2,'visible','off')

                set(handles.pushbutton1,'visible','off')

                set(handles.pushbutton0,'visible','off')

                pause(.1)

        end

end

set(handles.textMSG,'BackgroundColor','w', 'ForegroundColor', 'b')

% Now the serious business of crafting and presenting the stimulus

errormsg= stimulusMakeAndPlay (handles);

if ~isempty(errormsg)

    % e.g. clipping. subjGUI will service the error

    return

end

% after playing the stimulus, reset the subjectGUI

switch experiment.ear

    case {'statsModelLogistic', 'statsModelRareEvent',...

            'MAPmodel', 'MAPmodelMultiCh', 'MAPmodelSingleCh'}

        % no changes required if model used

        % NB these changes do occur is 'MAPmodelListen' is selected

    otherwise

        switch experiment.threshEstMethod

            case {'2I2AFC++', '2I2AFC+++'}

                % buttons already visible

            otherwise

                % single interval now make buttons visible

                set(handles.frame1,'visible','on')

                set(handles.pushbuttoNotSure,'visible','on')

                % set(handles.pushbuttonWrongButton,'visible','on')

                set(handles.pushbutton0,'visible','on')

                set(handles.pushbutton1,'visible','on')

                set(handles.pushbutton2,'visible','on')

                set(handles.pushbutton3,'visible','on')

        end

end

switch experiment.paradigm

    case 'SRT'

        set(handles.frame1,'backgroundColor','w')

        set(handles.frame1,'visible','off')

        set(handles.pushbuttoNotSure,'visible','off')

        set(handles.pushbuttonWrongButton,'visible','off')

        set(handles.pushbutton3,'visible','off')

        set(handles.pushbutton2,'visible','off')

        set(handles.pushbutton1,'visible','off')

        set(handles.pushbutton0,'visible','off')

        set(handles.editdigitInput,'visible','on')

        set(handles.editdigitInput,'string',[])

        pause(.2)

        uicontrol(handles.editdigitInput)

    otherwise

        set(handles.editdigitInput,'visible','off')

end

experiment.status='waitingForResponse';

% home again

% ------------------------------------------------------------------------------------------stimulusMakeAndPlay

function errormsg=stimulusMakeAndPlay (handles)

global experiment stimulusParameters betweenRuns withinRuns expGUIhandles  audio

% creates the stimulus and plays it; there are two stimuli; cue and test

%  called from nextStimulus

errormsg='';

% first post the subjects instructions on subjGUI

set(handles.textMSG,'string', stimulusParameters.subjectText)

% select the new levels of the between runs variables

num=betweenRuns.runNumber;

cmd=(['stimulusParameters.' betweenRuns.variableName1 '= ' ...

    num2str(betweenRuns.var1Sequence(num)) ';']);

% e.g.  stimulusParameters.targetFrequency= 1000;

eval(cmd);

cmd=(['stimulusParameters.' betweenRuns.variableName2 '= ' ...

    num2str(betweenRuns.var2Sequence(num)) ';']);

% e.g.  stimulusParameters.targetDuration= 0.1;

eval(cmd);

switch experiment.paradigm

    % target level may vary between runs

    case {'trainingIFMC', 'TMC','TMC_16ms', 'TMC - ELP', 'IFMC','IFMC_8ms','IFMC_16ms'}

        idx=floor(num/length(betweenRuns.variableList1)-0.01)+1;

        cmd=(['stimulusParameters.targetLevel = ' ...

            num2str(stimulusParameters.targetLevels(idx)) ';']);

        eval(cmd);

        if withinRuns.trialNumber==1

            disp(['targetLevel=' num2str(stimulusParameters.targetLevel)])

        end

end

% for more readable code use shorter variable names;

% NB these may change below; these are only the starting values

targetType=        stimulusParameters.targetType;

targetDuration=    stimulusParameters.targetDuration;

targetLevel=       stimulusParameters.targetLevel;

targetFrequency=   stimulusParameters.targetFrequency;

maskerType=        stimulusParameters.maskerType;

maskerDuration=    stimulusParameters.maskerDuration;

maskerLevel=       stimulusParameters.maskerLevel;

maskerRelativeFrequency=  stimulusParameters.maskerRelativeFrequency;

maskerFrequency=   maskerRelativeFrequency*targetFrequency;

gapDuration=       stimulusParameters.gapDuration;

rampDuration=      stimulusParameters.rampDuration;

AFCsilenceDuration=stimulusParameters.AFCsilenceDuration; % 2I2AFC gap

backgroundLevel=   stimulusParameters.backgroundLevel;

% Set level of within runs variable

% this is the first change to one of the values shown above

cmd=[stimulusParameters.WRVname '= withinRuns.variableValue;' ];

% e.g.: maskerLevel= withinRuns.variableValue;

eval(cmd);

% cue and test stimuli are identical except for a single difference

% depending on the paradigm

cueTestDifference= stimulusParameters.cueTestDifference;

%  cue characteristics before adding cue differences

cueTargetLevel=targetLevel;

cueMaskerFrequency=maskerFrequency;

cueMaskerDuration=maskerDuration;

cueMaskerLevel=maskerLevel;

cueTargetFrequency=targetFrequency;

cueGapDuration=gapDuration;

% ----------------------------paradigm sensitive cue and masker settings

% switch off unwanted components and base cue on target values

% for catch trials switch off the target

switch experiment.paradigm

    % OHIO is a temporary special arrangement

    case{'OHIOrand','OHIOspect','OHIOtemp','OHIOspectemp','OHIOabs'}

        % these values must be set in MAPparamsOHIO

        targetFrequency=experiment.OHIOfrequencies;

        numOHIOtones=stimulusParameters.numOHIOtones;

        maskerType='OHIO';

        targetType='OHIO';

        % globalStimParams.beginSilences says when each tone begins

        % targetFrequency specifies the frequency of each tone

        % targetLevel is the level of each tone

        switch experiment.paradigm

            case 'OHIOabs'

                % only one tone

                targetFrequency=targetFrequency(numOHIOtones);

                globalStimParams.beginSilences=0.01;

                targetDuration=0.01;

            case 'OHIOrand'

                % select random frequencies from the list

                x=rand(12,1); [x idx]=sort(x);

                targetFrequency=targetFrequency(idx(1:numOHIOtones));

                thresholds=experiment.OHIOthresholds;

                targetLevel=thresholds(idx(1:numOHIOtones))+targetLevel;

                globalStimParams.beginSilences=0.01:0.02:...

                    0.01+0.02*(numOHIOtones-1);

                targetDuration=numOHIOtones*0.02;

            case 'OHIOspect'

                % only one tone with multiple frequencies

                targetFrequency=fliplr(targetFrequency);

                targetFrequency=targetFrequency(1:numOHIOtones);

                thresholds=experiment.OHIOthresholds;

                thresholds=fliplr(thresholds);

                targetLevel=thresholds(1:numOHIOtones)+targetLevel;

                globalStimParams.beginSilences=...

                    repmat(0.01, 1, numOHIOtones);

                targetDuration=0.02;

            case 'OHIOspectemp'

                % only one tone with multiple frequencies

                targetFrequency=fliplr(targetFrequency);

                targetFrequency=targetFrequency(1:numOHIOtones);

                thresholds=experiment.OHIOthresholds;

                thresholds=fliplr(thresholds);

                targetLevel=thresholds(1:numOHIOtones)+targetLevel;

                globalStimParams.beginSilences=0.01:0.02:...

                    0.01+0.02*(numOHIOtones-1);

                targetDuration=numOHIOtones*0.02;

            case 'OHIOtemp'

                % use only one tone repeatedly

                tonesToUse=10;

                targetFrequency=targetFrequency(tonesToUse);

                targetFrequency=repmat(targetFrequency,1,numOHIOtones);

                thresholds=experiment.OHIOthresholds;

                thresholds=thresholds(tonesToUse);

                targetLevel=repmat(thresholds,1,numOHIOtones)+targetLevel;

                globalStimParams.beginSilences=0.01:0.02:...

                    0.01+0.02*(numOHIOtones-1);

                targetDuration=numOHIOtones*0.02;

        end

        % still in OHIO

        % Dummy values to make things work although no masker or cue used

        % target values have changed and this affects the cue values

        cueMaskerLevel=targetLevel;

        cueTargetLevel=targetLevel;

        cueTargetFrequency=targetFrequency;

        cueMaskerFrequency=targetFrequency;

        maskerFrequency=targetFrequency;

        maskerLevel=targetLevel;

        disp(['OHIO frequencies= ' num2str(targetFrequency)])

end

% --- set cueTarget level according to assessment method

% cue-test difference applies only with singleInterval

switch experiment.threshEstMethod

    case {'2I2AFC++', '2I2AFC+++'}

        % For 2IFC the cue stimulus (masker + probe) is the 'no' window

        % and the target stimulus (masker+probe) is the 'yes' window

        % the order of presentation is decided at the last minute.

        cueTargetLevel=-100;    % the target is never in the 'no' window

        cueMaskerLevel=maskerLevel; % masker level is the same in both

    otherwise

        % 'single interval' or max likelihood

        switch experiment.paradigm

            % cue target is more audible

            case {'training','absThreshold', 'absThreshold_8',  ...

                    'TENtest', 'threshold_duration','discomfort',...

                    'overShoot','overShootB','overShootMB1', ...

                    'overShootMB2', 'OHIO','OHIOabs','OHIOspect'}

                cueTargetLevel=targetLevel+cueTestDifference;

            case {'forwardMasking','forwardMaskingD','trainingIFMC', ...

                    'TMC','TMC_16ms', 'TMC - ELP', 'IFMC','IFMC_8ms', 'FMreProbe'}

                % cue masker is weaker to make target more audible

                cueMaskerLevel=maskerLevel-cueTestDifference;

        end

end

% ----------------------------- catch trial

if withinRuns.catchTrial

    targetLevel=-100;	% no target

end

% ----------------------------- calibration of sound output

calibrationCorrectiondB=stimulusParameters.calibrationdB;

if calibrationCorrectiondB<-50

    if maskerFrequency==targetFrequency

        load 'calibrationFile'  % calibrationFrequency calibrationAttenutation

        idx=find(calibrationFrequency==targetFrequency);

        if isempty(idx)

            error('Calibration bty file; frequency not found')

        else

            calibrationCorrectiondB=calibrationAttenutation(idx)

        end

    else

        error('calibration by file requested but masker frequency is not the same as target')

    end

end

% -------------------------------------- Checks on excessive signal level

% clipping is relevant only for soundcard use (not modelling)

switch experiment.ear

    case {'left', 'right', 'diotic',...

            'dichotic', 'dioticLeft', 'dichoticRight'}

        experiment.headphonesUsed=1;

    otherwise

        experiment.headphonesUsed=0;

end

% NB calibration *reduces* the level of the soundCard output

switch experiment.ear

    case {'left', 'right', 'diotic',...

            'dichotic', 'dioticLeft', 'dichoticRight'}

        clippingLevel=91+calibrationCorrectiondB;

        soundCardMinimum=clippingLevel-20*log10(2^24);

    otherwise

        clippingLevel=inf;

        soundCardMinimum=-inf;

end

% Check for extreme WRV values and abort if necessary

% WRVname specifies the value that changes from trial to trial

withinRuns.forceThreshold=[];

switch stimulusParameters.WRVname

    % check for extreme values. Note that one of the tones might be switched off

    case 'maskerLevel'

        upperLevel=stimulusParameters.WRVlimits(2);

        lowerLevel=stimulusParameters.WRVlimits(1);

        if max(maskerLevel, cueMaskerLevel)> upperLevel

            errormsg=['Level(' num2str(max(maskerLevel,cueMaskerLevel)) ...

                ') is too high ***'];

            withinRuns.forceThreshold=upperLevel;

            withinRuns.forceThreshold=NaN;

            return

        end

        if max(maskerLevel, cueMaskerLevel)< lowerLevel

            errormsg=['Level(' num2str(max(maskerLevel,cueMaskerLevel)) ...

                ') is too low ***'];

            withinRuns.forceThreshold=lowerLevel;

            withinRuns.forceThreshold=NaN;

            return

        end

        if max(maskerLevel, cueMaskerLevel)> clippingLevel

            errormsg=['Level(' num2str(max(maskerLevel,cueMaskerLevel)) ...

                ') is clipping ***'];

            withinRuns.forceThreshold=clippingLevel;

            withinRuns.forceThreshold=NaN;

            return

        end

    case 'targetLevel'

        upperLevel=stimulusParameters.WRVlimits(2);

        lowerLevel=stimulusParameters.WRVlimits(1);

        if ~withinRuns.catchTrial

            if max(targetLevel, cueTargetLevel)> upperLevel

                errormsg=['target level (' ...

                    num2str(max(targetLevel, cueTargetLevel)) ...

                    ')  is too high ***'];

                withinRuns.forceThreshold=upperLevel;

                withinRuns.forceThreshold=NaN;

                return

            end

            if max(targetLevel, cueTargetLevel)< lowerLevel

                errormsg=['target level (' ...

                    num2str(max(targetLevel, cueTargetLevel)) ...

                    ')  is too low ***'];

                withinRuns.forceThreshold=lowerLevel;

                withinRuns.forceThreshold=NaN;

                return

            end

            if max(targetLevel, cueTargetLevel)> clippingLevel

                errormsg=['target level (' ...

                    num2str(max(targetLevel, cueTargetLevel)) ...

                    ')  is clipping ***'];

                withinRuns.forceThreshold=upperLevel;

                withinRuns.forceThreshold=NaN;

                return

            end

        end

    case 'maskerDuration'

        % this is odd! but harmless

        if max(maskerDuration, cueMaskerDuration)> ...

                stimulusParameters.WRVlimits(2)

            errormsg=['maskerDuration (' ...

                num2str(max(maskerDuration, cueMaskerDuration))...

                ') is too long ***'];

            withinRuns.forceThreshold=stimulusParameters.WRVlimits(2);

            withinRuns.forceThreshold=NaN;

            return

        end

        if min(maskerDuration, cueMaskerDuration)...

                < stimulusParameters.WRVlimits(1)

            errormsg=['maskerDuration (' num2str(maskerLevel) ...

                ') too short ***'];

            withinRuns.forceThreshold=stimulusParameters.WRVlimits(1);

            withinRuns.forceThreshold=NaN;

            return

        end

        % legacy programming

    case 'gapDuration'

        if gapDuration<0

            errormsg=['gapDuration (' num2str(gapDuration) ...

                ') is less than zero  ***'];

            return

        end

    case 'maskerFrequency'

        switch experiment.paradigm

            case 'bandwidth'

                frequency=maskerFrequency';

                if stimulusParameters.WRVstep<0

                    lowerLevel=stimulusParameters.targetFrequency;

                    upperLevel=stimulusParameters.targetFrequency*2;

                else

                    lowerLevel=stimulusParameters.targetFrequency/3;

                    upperLevel=stimulusParameters.targetFrequency;

                end

                if frequency(1)>upperLevel || frequency(1)<lowerLevel

                    errormsg=['frequency out of range: ' ...

                        num2str(frequency)];

                    withinRuns.forceThreshold=frequency;

                    return

                end

            otherwise

        end

    case 'maskerRelativeFrequency'

        if  maskerRelativeFrequency<stimulusParameters.WRVlimits(1)

            errormsg=['masker frequency (' ...

                num2str(frequencyDifference) ...

                ')  is outside WRV limits ***'];

            withinRuns.forceThreshold=stimulusParameters.WRVlimits(1) ;

            return

        end

        if   maskerRelativeFrequency>stimulusParameters.WRVlimits(2)

            errormsg=['masker frequency (' ...

                num2str(frequencyDifference) ...

                ')  is outside WRV limits ***'];

            withinRuns.forceThreshold=stimulusParameters.WRVlimits(2) ;

            return

        end

end

% --------------------------------Ear ----------------------------------

globalStimParams.ears='specified';

% ear: 1=left, 2=right

switch experiment.ear

    case 'left'

        maskerEar=1;

        targetEar=1;

    case 'right'

        maskerEar=2;

        targetEar=2;

    case 'dichoticLeft'

        maskerEar=2;

        targetEar=1;

    case 'dichoticRight'

        maskerEar=1;

        targetEar=2;

    case 'diotic'

        maskerEar=1;

        targetEar=1;

        globalStimParams.ears='diotic';

    case {'MAPmodel', 'MAPmodelMultiCh', 'MAPmodelSingleCh', 'MAPmodelListen',...

            'statsModelLogistic', 'statsModelRareEvent'}

        maskerEar=1;

        targetEar=1;

end

backgroundType=stimulusParameters.backgroundType;

switch stimulusParameters.backgroundType

    case {'noiseDich', 'pinkNoiseDich'}

        %     case 'Dich'

        % dich means put the background in the ear opposite to the target

        backgroundType=backgroundType(1:end-4);

        switch targetEar

            case 1

                backgroundEar=2;

            case 2

                backgroundEar=1;

        end

    otherwise

        %             case {'none','noise', 'pinkNoise', 'TEN','babble'}

        backgroundEar=targetEar;

end

% ------------------------------- Make Stimulus -------------------

% single interval up/down plays cue then target stimulus

% 2IFC uses cue stimulus as interval with no target

globalStimParams.FS=stimulusParameters.sampleRate;

dt=1/stimulusParameters.sampleRate;

globalStimParams.dt=dt;

stimulusParameters.dt=dt; % for use later

globalStimParams.audioOutCorrection=10^(calibrationCorrectiondB/20);

% the output will be reduced by this amount in stimulusCreate

% i.e.  audio=audio/globalStimParams.audioOutCorrection

% A 91 dB level will yield a peak amp of 1 for calibration=0

% A 91 dB level will yield a peak amp of 0.4467 for calibration=7

% A 98 dB level will yield a peak amp of 1 for calibration=7

precedingSilence=stimulusParameters.stimulusDelay;

% all stimuli have 20 ms terminal silence.

% this is clearance for modelling late-ringing targets

terminalSilence=.03;

% Now compute overall duration of the stimulus

% note that all endsilence values are set to -1

%  so that they will fill with terminal silence as required to make

%  components equal in length

% We need to find the longest possible duration

duration(1)=precedingSilence+maskerDuration+cueGapDuration...

    +targetDuration+terminalSilence;

duration(2)=precedingSilence+maskerDuration+gapDuration...

    +targetDuration+ terminalSilence;

% If the gap is negative we need to ignore it when estimating total length

duration(3)=precedingSilence+maskerDuration+ terminalSilence;

globalStimParams.overallDuration=max(duration);

globalStimParams.nSignalPoints=...

    round(globalStimParams.overallDuration/globalStimParams.dt);

%           ----------------------------------------------cue stimulus

% cue masker

componentNo=1;

precedingSilence=stimulusParameters.stimulusDelay;

stimComponents(maskerEar,componentNo).type=maskerType;

stimComponents(maskerEar,componentNo).toneDuration=cueMaskerDuration;

stimComponents(maskerEar,componentNo).frequencies=cueMaskerFrequency;

stimComponents(maskerEar,componentNo).amplitudesdB=cueMaskerLevel;

stimComponents(maskerEar,componentNo).beginSilence=precedingSilence;

stimComponents(maskerEar,componentNo).endSilence=-1;

stimComponents(maskerEar,componentNo).AMfrequency=0;

stimComponents(maskerEar,componentNo).AMdepth=0;

if rampDuration<maskerDuration

    % ramps must be shorter than the signal

    stimComponents(maskerEar,componentNo).rampOnDur=rampDuration;

    stimComponents(maskerEar,componentNo).rampOffDur=rampDuration;

else

    % or squeeze the ramp in

    stimComponents(maskerEar,componentNo).rampOnDur=maskerDuration/2;

    stimComponents(maskerEar,componentNo).rampOffDur=maskerDuration/2;

end

stimComponents(maskerEar,componentNo).phases=...

    stimulusParameters.maskerPhase;

stimComponents(maskerEar,componentNo).niterations=0;    % for IRN only

% stimComponents(targetEar,componentNo)

% cue target

componentNo=2;

precedingSilence=precedingSilence + maskerDuration+cueGapDuration;

stimComponents(targetEar,componentNo).type=targetType;

stimComponents(targetEar,componentNo).toneDuration=targetDuration;

stimComponents(targetEar,componentNo).frequencies=cueTargetFrequency;

stimComponents(targetEar,componentNo).amplitudesdB=cueTargetLevel;

stimComponents(targetEar,componentNo).beginSilence=precedingSilence;

stimComponents(targetEar,componentNo).endSilence=-1;

stimComponents(targetEar,componentNo).AMfrequency=0;

stimComponents(targetEar,componentNo).AMdepth=0;

if rampDuration<targetDuration

    % ramps must be shorter than the signal

    stimComponents(targetEar,componentNo).rampOnDur=rampDuration;

    stimComponents(targetEar,componentNo).rampOffDur=rampDuration;

else

    stimComponents(targetEar,componentNo).rampOnDur=0;

    stimComponents(targetEar,componentNo).rampOffDur=0;

end

stimComponents(targetEar,componentNo).phases=...

    stimulusParameters.targetPhase;

% stimComponents(targetEar,componentNo)

% background same ear as target

componentNo=3;

stimComponents(backgroundEar,componentNo).type=backgroundType;

switch backgroundType

    case 'TEN'

        fileName=['..' filesep '..' filesep ...

            'multithresholdResources' filesep ...

            'backgrounds and maskers'...

            filesep 'ten.wav'];

        [tenNoise, FS]=wavread(fileName);

        tenNoise=resample(tenNoise, globalStimParams.FS, FS);

        stimComponents(backgroundEar,componentNo).type='file';

        stimComponents(backgroundEar,componentNo).stimulus=tenNoise';

end

stimComponents(backgroundEar,componentNo).toneDuration=...

    globalStimParams.overallDuration;

stimComponents(backgroundEar,componentNo).amplitudesdB=backgroundLevel;

stimComponents(backgroundEar,componentNo).beginSilence=0;

stimComponents(backgroundEar,componentNo).endSilence=-1;

stimComponents(backgroundEar,componentNo).AMfrequency=0;

stimComponents(backgroundEar,componentNo).AMdepth=0;

stimComponents(backgroundEar,componentNo).rampOnDur=rampDuration;

stimComponents(backgroundEar,componentNo).rampOffDur=rampDuration;

[cueStimulus, errormsg]=...

    stimulusCreate(globalStimParams, stimComponents, 0);

if ~isempty(errormsg)     % e.g. limits exceeded

    errormsg

    return

end

%               ------------------------------------------ test stimulus

% masker

componentNo=1;

precedingSilence=stimulusParameters.stimulusDelay;

stimComponents(maskerEar,componentNo).type=maskerType;

stimComponents(maskerEar,componentNo).toneDuration=maskerDuration;

stimComponents(maskerEar,componentNo).frequencies=maskerFrequency;

stimComponents(maskerEar,componentNo).amplitudesdB=maskerLevel;

stimComponents(maskerEar,componentNo).beginSilence=precedingSilence;

stimComponents(maskerEar,componentNo).endSilence=-1;

stimComponents(maskerEar,componentNo).AMfrequency=0;

stimComponents(maskerEar,componentNo).AMdepth=0;

if rampDuration<maskerDuration

    % ramps must be shorter than the signal

    stimComponents(maskerEar,componentNo).rampOnDur=rampDuration;

    stimComponents(maskerEar,componentNo).rampOffDur=rampDuration;

else

    stimComponents(maskerEar,componentNo).rampOnDur=maskerDuration/2;

    stimComponents(maskerEar,componentNo).rampOffDur=maskerDuration/2;

end

stimComponents(maskerEar,componentNo).phases=...

    stimulusParameters.maskerPhase;

stimComponents(maskerEar,componentNo).niterations=0;    % for IRN only

% target

componentNo=2;

targetDelay=precedingSilence+ maskerDuration+ gapDuration;

stimComponents(targetEar,componentNo).type=targetType;

stimComponents(targetEar,componentNo).toneDuration=targetDuration;

stimComponents(targetEar,componentNo).frequencies=targetFrequency;

stimComponents(targetEar,componentNo).amplitudesdB=targetLevel;

stimComponents(targetEar,componentNo).beginSilence=targetDelay;

stimComponents(targetEar,componentNo).endSilence=-1;

stimComponents(targetEar,componentNo).AMfrequency=0;

stimComponents(targetEar,componentNo).AMdepth=0;

if rampDuration<targetDuration

    % ramps must be shorter than the signal

    stimComponents(targetEar,componentNo).rampOnDur=rampDuration;

    stimComponents(targetEar,componentNo).rampOffDur=rampDuration;

else

    stimComponents(targetEar,componentNo).rampOnDur=0;

    stimComponents(targetEar,componentNo).rampOffDur=0;

end

stimComponents(targetEar,componentNo).phases=stimulusParameters.targetPhase;

% stimComponents(targetEar,componentNo)

% background same ear as target

componentNo=3;

stimComponents(backgroundEar,componentNo).type=backgroundType;

switch backgroundType

    case 'TEN'

        fileName=['..' filesep '..' filesep ...

            'multithresholdResources' filesep ...

            'backgrounds and maskers'...

            filesep 'ten.wav'];

        [tenNoise, FS]=wavread(fileName);

        tenNoise=resample(tenNoise, globalStimParams.FS, FS);

        stimComponents(backgroundEar,componentNo).type='file';

        stimComponents(backgroundEar,componentNo).stimulus=tenNoise';

end

stimComponents(backgroundEar,componentNo).toneDuration=...

    globalStimParams.overallDuration;

stimComponents(backgroundEar,componentNo).amplitudesdB=backgroundLevel;

stimComponents(backgroundEar,componentNo).beginSilence=0;

stimComponents(backgroundEar,componentNo).endSilence=-1;

stimComponents(backgroundEar,componentNo).rampOnDur=rampDuration;

stimComponents(backgroundEar,componentNo).rampOffDur=rampDuration;

stimComponents(backgroundEar,componentNo).AMfrequency=0;

stimComponents(backgroundEar,componentNo).AMdepth=0;

% timings used when evaluating MAP peripheral model

% this is the Slope during which spikes are counted

switch experiment.paradigm

    case 'gapDetection'

        % gap is the 'target' in this case

        stimulusParameters.testTargetBegins=...

            stimulusParameters.stimulusDelay...

            +stimulusParameters.maskerDuration;

        stimulusParameters.testTargetEnds=...

            stimulusParameters.testTargetBegins+withinRuns.variableValue;

        %     case 'SRT'

        %         set(handles.editdigitInput,'visible','off')

    otherwise

        stimulusParameters.testTargetBegins=targetDelay;

        stimulusParameters.testTargetEnds=targetDelay+targetDuration;

end

% ------------------------------------------------------------- play!

% Create and play stimulus (as required by different paradigms)

switch experiment.ear

    case {'statsModelLogistic', 'statsModelRareEvent'}

        audio=[0;0];            % no need to compute stimulus

    otherwise                   % create the stimulus

        [targetStimulus, errormsg]= ...

            stimulusCreate(globalStimParams, stimComponents, 0);

        if ~isempty(errormsg)   % e.g. limits exceeded

            errormsg

            return

        end

        switch experiment.ear

            case {'MAPmodel' , 'MAPmodelMultiCh', 'MAPmodelSingleCh', 'MAPmodelListen'}

                % model requires no calibration correction;

                %  signal is already in Pascals

                globalStimParams.audioOutCorrection=1;

                % use only the targetStimulus for the MAP model

                audio=targetStimulus;

            otherwise           % left, right diotic dichotic

                if stimulusParameters.includeCue

                    audio= [cueStimulus;  targetStimulus];

                else            % no cue

                    audio=targetStimulus;

                end

        end

        % playtime

        % order of the cue and test stimuli varies for 2AFC

        switch experiment.threshEstMethod

            case {'2I2AFC++', '2I2AFC+++'}

                % intervening silence (currently none; masking delay serves this purpose)

                IAFCinterveningSilence=zeros(round(AFCsilenceDuration/dt),2);

                if rand>0.5				% put test stimulus first

                    stimulusParameters.testTargetBegins=targetDelay ;

                    stimulusParameters.testTargetEnds= ...

                        targetDelay+targetDuration;

                    stimulusParameters.testNonTargetBegins=...

                        length(cueStimulus)*dt ...

                        + AFCsilenceDuration +targetDelay ;

                    stimulusParameters.testNonTargetEnds=...

                        length(cueStimulus)*dt ...

                        + AFCsilenceDuration+targetDelay+targetDuration;

                    set(handles.pushbutton1,'backgroundcolor','r'), drawnow

                    y=audioplayer(targetStimulus, globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton1,'backgroundcolor',...

                        get(0,'defaultUicontrolBackgroundColor')), drawnow

                    y=audioplayer(IAFCinterveningSilence, ...

                        globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton2,'backgroundcolor','r'), drawnow

                    y=audioplayer(cueStimulus, globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton2,'backgroundcolor',...

                        get(0,'defaultUicontrolBackgroundColor')), drawnow

                    withinRuns.stimulusOrder='targetFirst';

                    audio= [targetStimulus; IAFCinterveningSilence; ...

                        cueStimulus];   % for plotting purposes later

                else					% put test stimulus second

                    stimulusParameters.testTargetBegins=...

                        length(cueStimulus)*dt ...

                        + AFCsilenceDuration +targetDelay ;

                    stimulusParameters.testTargetEnds=...

                        length(cueStimulus)*dt ...

                        + AFCsilenceDuration+targetDelay+targetDuration;

                    stimulusParameters.testNonTargetBegins=targetDelay ;

                    stimulusParameters.testNonTargetEnds=...

                        targetDelay+targetDuration;

                    set(handles.pushbutton1,'backgroundcolor','r'),drawnow

                    y=audioplayer(cueStimulus, globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton1,'backgroundcolor',...

                        get(0,'defaultUicontrolBackgroundColor')), drawnow

                    y=audioplayer(IAFCinterveningSilence, ...

                        globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton2,'backgroundcolor','r'), drawnow

                    y=audioplayer(targetStimulus, globalStimParams.FS, 24);

                    playblocking(y)

                    set(handles.pushbutton2,'backgroundcolor',...

                        get(0,'defaultUicontrolBackgroundColor')), drawnow

                    withinRuns.stimulusOrder='targetSecond';

                    audio= [cueStimulus; IAFCinterveningSilence; ...

                        targetStimulus];    % for plotting purposes later

                end

            otherwise                       % singleInterval

                if strcmp(experiment.ear,'MAPmodel') ...

                        || strcmp(experiment.ear,'MAPmodelMultiCh') ...

                        || strcmp(experiment.ear,'MAPmodelSingleCh') ...

                        ||strcmp(experiment.ear,'MAPmodelListen')

                    % don't play for MAPmodel

                    switch experiment.ear

                        % except on special request

                        case {'MAPmodelListen'}

                            y=audioplayer(audio, globalStimParams.FS, 24);

                            playblocking(y) % suspends operations until completed

                    end

                else

                    y=audioplayer(audio, globalStimParams.FS, 24);

                    playblocking(y)

                end	  %   if experiment.ear

        end	% switch experiment.threshEstMethod

end % switch experiment.ear

% switch experiment.ear

%     case	{'MAPmodel', 'MAPmodelListen',  'MAPmodelMultiCh','MAPmodelSingleCh'}

%         % save audio for later reference or for input to MAP model

%         wavwrite(audio/max(audio), globalStimParams.FS,32,'stimulus')

% end

% Panel 1

% graphical presentation of the stimulus

% NB shown *after* the stimulus has been presented

axes(expGUIhandles.axes1), cla

% plot is HW rectified and plotted as dB re 28e-6

% calibration is ignored

t=dt:dt:dt*length(audio);

plot(t,stimulusParameters.calibrationdB+20*log10((abs(audio)+1e-10)/28e-6))

% set(gca,'xtick',[])

ylim([-20 100])

ylabel('stimulus (dB SPL)')

xlim([0 t(end)])

grid on

header=[betweenRuns.variableName1  ': ' ...

    num2str(betweenRuns.var1Sequence(betweenRuns.runNumber))];

header=[header '      ' num2str(...

    betweenRuns.var2Sequence(betweenRuns.runNumber)) ':' ...

    betweenRuns.variableName2 ];

title(header)