# Synchronization fmri paradigm with Current Designs button system

**URL:** https://discourse.psychopy.org/t/synchronization-fmri-paradigm-with-current-designs-button-system/29985
**Category:** Coding
**Tags:** timing
**Created:** [July 12, 2022, 9:23pm UTC](https://discourse.psychopy.org/t/synchronization-fmri-paradigm-with-current-designs-button-system/29985 "2022-07-12T21:23:59Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Gonzalo\_Rojas\_Costa](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/gonzalo_rojas_costa/32/16082_2.png) [@Gonzalo\_Rojas\_Costa](https://discourse.psychopy.org/u/Gonzalo_Rojas_Costa)
#### Post date: [July 12, 2022, 9:23pm UTC](https://discourse.psychopy.org/t/synchronization-fmri-paradigm-with-current-designs-button-system/29985/1 "2022-07-12T21:23:59Z")

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I have an experiment in Psychopy. It shows some instructions to the patient, and then a plus sign and the rest of the paradigm to the patient. How can I begin to show the plus sign at same time we begin the fMRI adquisition? With triggers. How can I code it?

Sincerely,

Gonzalo Rojas Costa

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### Author: ![JensBoelte](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/jensboelte/32/9060_2.png) [@JensBoelte](https://discourse.psychopy.org/u/JensBoelte)
#### Post date: [July 13, 2022, 7:42am UTC](https://discourse.psychopy.org/t/synchronization-fmri-paradigm-with-current-designs-button-system/29985/2 "2022-07-13T07:42:35Z")

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Hello Gonzalo

you might want to read “Building experiments in PsychoPy: A step-by-step guide (2022)”. Or if you want to have the experiment programmed for you, you might want to check this out [Consultancy services — PsychoPy v2022.2.1](https://psychopy.org/consultancy.html) .

Best wishes Jens