Variable to control stimulus times

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Variable to control stimulus times

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lwise	lwise posted 8 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 10, Visits: 28	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
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Dave	Dave posted 8 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 105K	+x lwise - Sunday, January 22, 2017 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 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
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lwise	lwise posted 8 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 10, Visits: 28	+x Dave - Monday, January 23, 2017 +x lwise - Sunday, January 22, 2017 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 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 Thanks for that - it solves my problem. Where do I find documentation on the various things one can do with /ontrialbegin ? Thanks again Lisa
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Dave	Dave posted 8 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 105K	+x lwise - Monday, January 23, 2017 +x Dave - Monday, January 23, 2017 +x lwise - Sunday, January 22, 2017 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 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 Thanks for that - it solves my problem. Where do I find documentation on the various things one can do with /ontrialbegin ? Thanks again Lisa /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.
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