Turn Time Audit on For Everything

Thu Aug 8 19:52:22 UTC 2013

In addition to David's advise, I would also suggest adding a few lines of
E-Basic script to calculate stimulus (and response) onset times that are
relative to the start of the start of the MRI scanner. These values can
then be added to the output file using the c.SetAttrib method. This is a
very easy to do and it will save a lot of post processing. (I've seen
people creating lots of excel sheets just to get onset times for SPM or
FSL. Very time consuming and error-prone.)

Just follow these steps:

1) Declare a global variable to store the scanner start time (i.e. onset
time of first EPI scan). This time is normally determined by handling the
trigger onset pulse as input response. The global variable should be of
type Long (integer) and should be placed in the global user script section:

   Dim ScannerOnset as Long

2) Then copy the trigger onset time to the global declared variable by
adding the following after the object that handles the scanner trigger:

   ScannerOnset = *WaitForScanner*.RTTime

(replace* WaitForScanner* with the name the actual object)
Also make sure the RTTime attribute itself is logged properly to be able to
verify timing.

3) Add a few lines of script at the end of the trial procedure to save the
relative times to the log output:

   c.SetAttrib "*RelStimOnset*", CStr(*Stim*.OnsetTime - ScannerOnset)

(replace *Stim* with the name of the stimulus object)
Also make sure the onset attribute itself is logged properly to be able to
verify timing.

Repeat 3) for all relevant onset and response times.

that's it

Paul

On 8 August 2013 20:17, David McFarlane <mcfarla9 at msu.edu> wrote:

> Well, if you are really determined, then you might use Rte.GetObject() to
> iterate through all the E-Objects and do as you like (see that topic in the
> E-Basic Help facility).
>
> But this seems a very peculiar request.  Ordinarily, you would take care
> of this in E-Studio from the Property Pages of each object of interest --
> either go to the Duration/Input tab and select the desired Data Logging, or
> for finer granularity go to the Logging tab and select whatever you like.
>
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> At 8/7/2013 10:30 AM Wednesday, kyleheidtman2012 at u.**northwestern.edu<kyleheidtman2012 at u.northwestern.edu>wrote:
>
>> I'm new to e-basic, so I don't know if this is possible, but is there
>> some way to write an inline file that will turn Time Audit on for
>> everything (I'm doing an fMRI study, so it's very important to track all
>> the timing information).
>>
>> I looked through the generate code and found what appears to be the code
>> that turns on time audit for an individual object (in this case a
>> TextDisplay called PreBlockInstructions)
>>
>> PreBlockInstructions.Run
>>
>>       c.SetAttrib PreBlockInstructions.Name & ebDot &
>> ebLogNameOnsetDelay, PreBlockInstructions.**OnsetDelay
>>
>>       c.SetAttrib PreBlockInstructions.Name & ebDot & ebLogNameOnsetTime,
>> PreBlockInstructions.OnsetTime
>>
>>       c.SetAttrib PreBlockInstructions.Name & ebDot &
>> ebLogNameDurationError, PreBlockInstructions.**DurationError
>>       c.SetAttrib PreBlockInstructions.Name & ebDot &
>> ebLogNameOnsetToOnsetTime, PreBlockInstructions.**OnsetToOnsetTime
>>
>>
>> I would like to make an inline that iterates over every declared variable
>> of the TextDisplay type and call code similar to the above on each of those
>> TextDisplays.
>>
>> Is this possible/feasible?
>>
>
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