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Change colour of a stimulus

Hi there,

How can you change the colour of one of your stimuli for a brief period of time within a routine (e.g. to appear as flashing on/off)?

Thanks,

Jo

Yes. Please describe exactly what you need to achieve (colours, duration, etc).

OK, there seem to be multiple topics here all related to the same problem: Repeat a stimulus

Would you mind deleting all the duplicate posts to avoid duplicated effort by people attempting to give answers in multiple places?