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Variable to control stimulus times

lwise — Tue, 24 Jan 2017 07:07:15 GMT

Is it possible to control stimulus presentation times via a variable?

For example:
/ stimulustimes = [1=Fixation; 1000=Video1; 1500=TextLT; 2000=MaskLT]

if I wanted to display the TextLT and MaskLT at different times, can I control this programmatically (replacing 1500 and 2000 with a value or parameter), or do I need different types of trials with pre-specified stimulus times for each stimulus presentation sequence?

Lisa

RE: Variable to control stimulus times

Dave — Tue, 24 Jan 2017 07:07:15 GMT

[quote]

[b]lwise - Monday, January 23, 2017[/b]

[quote]

[b]Dave - Monday, January 23, 2017[/b]

[quote]

[b]lwise - Sunday, January 22, 2017[/b]

[/quote]

You can control this programmatically, but not via the /stimulustimes attribute. Instead you ought to use the /insertstimulustime function /ontrialbegin. See e.g.

https://www.millisecond.com/forums/FindPost19286.aspx or https://www.millisecond.com/forums/FindPost19694.aspx

[/quote]

Thanks for that - it solves my problem.

Where do I find documentation on the various things one can do with /ontrialbegin ?

Thanks again
Lisa

[/quote]

/ontrialbegin, /ontrialend, etc. are event attributes. They execute logic at the start or end of a trial. See the documentation on event atributes, the functions reference, as well as the available properties and functions in a given element's language reference topic.

lwise — Mon, 23 Jan 2017 18:45:38 GMT

[quote]

[b]Dave - Monday, January 23, 2017[/b]

[quote]

[b]lwise - Sunday, January 22, 2017[/b]

[/quote]

Thanks for that - it solves my problem.

Where do I find documentation on the various things one can do with /ontrialbegin ?

Thanks again
Lisa

RE: Variable to control stimulus times

Dave — Mon, 23 Jan 2017 07:24:51 GMT

[quote]

[b]lwise - Sunday, January 22, 2017[/b]

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