Millisecond Forums

About trialdata element

https://forums.millisecond.com/Topic12206.aspx

By abhi - 1/26/2014

Hi,

/ stimulustimes = [0=primeA; 75=blank; 200=target; 300=mask]
/ trialdata = [primeNeutral, target]
</trial>


If this is my code where target word and rectangle surrounding it appears at 200 ms and rectangle disappears after 300 ms whereas target remains on the screen  and a subject has to respond before rectangle disappears.

Then my question is - the latency recored by software, is it the response time from 200 ms ( when target appeared for the first time ) or is it the response time from the last fame which is 300 when the target reappears again ( although it is not evident to naked eye)

And the second question is about / trialdata-  (  / trialdata = [primeA, target] ) in this command-  will the program only record latency between primeA and target and I will not get any other columns ?

Thanks

Abhi
By Dave - 1/26/2014

By default Inquisit will start polling for response *after all stimuli in /stimulustimes have been presented*. In your example, latency would thus be *relative to mask*. If you don't want that, you need to use the /beginresponsetime (formerly /responsetime) attribute. Details are available in the documentation.
By abhi - 1/26/2014

thanks


working fine with beginresponse