Response bar updated by multiple presses

[free_operant_task]

Hi Paul, 

Thanks for your reply and for sharing your VAS script. I seem to be having 
some trouble adding the VAS.epk2 package. When I go to Experiment Object 
Properties >> Add the package is not given as an option to be added. Do you 
have any suggestions? Is the package soemthing I have to purchase to 
activate? 

Many thanks for your help. 

~Holly


On Friday, June 7, 2013 12:41:33 PM UTC-4, Paul Groot wrote:
>
> hi,
>
> It seems that you now have a stimulus screen (with a static contents) that 
> stays on screen until all presses are collected. Then, when the Stimulus 
> object finishes, you start an inline script that processes all past button 
> presses. If you would like to update the bar immediately after each button 
> press, you need a different construct. I think it would be very similar to 
> the code I used in my VAS example script: 
> http://pfcgroot.nl/e-prime/83-example-scripts/80-visual-analogue-scale-example-for-e-prime.html  
> (look at the DragScale function). Also note that you should set the 
> duration of the Stimulus screen to zero, or set the prerelease to same as 
> duration.
>
> Best
> Paul
>
>
>
>
> On 6 June 2013 18:02, free_operant_task <holly... at gmail.com <javascript:>>wrote:
>
>> Hi,
>>
>> I hope someone can help and apologies in advance for my elementary coding 
>> skills.
>>
>> I am trying to create a response bar (drawn by the canvas function) that 
>> is incrementally filled by each button press (each of the multiple button 
>> presses required for an individual trial). I have tried to combine the 
>> ScoreBar and MultipleResponseCollection sample scripts from the PST eprime 
>> support site. I want the number of presses required to be randomly 
>> determined by an attribute called MaxCount (which is set by RewardProb) at 
>> the beginning of each trial. Eventually, the duration of each trial will 
>> also vary depending on RewardProb (this bit works well in another script I 
>> have). 
>>
>> I am attaching the script that I have so far. It seems to be partially 
>> working. When the number of presses set by the attribute MaxCount is 
>> reached, the trial terminates as it should, however, there is a substantial 
>> delay before the response bar starts filling. Also, I would like the canvas 
>> to be cleared of all images after each trial (because the next thing I am 
>> going to work on is making the size of the response bar variable on each 
>> trial). But for now, I would greatly appreciate any help with getting a 
>> response bar that fills with each press on a single trial and clears after 
>> the trial is finished. 
>>
>> Many thanks in advance if you can help!
>>
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>

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