# How to put mouse in the center of the screen in online experiment

**URL:** <https://discourse.psychopy.org/t/how-to-put-mouse-in-the-center-of-the-screen-in-online-experiment/6915>\
**Category:** Online experiments\
**Tags:** mouse\
**Created:** [March 5, 2019, 1:20pm UTC](https://discourse.psychopy.org/t/how-to-put-mouse-in-the-center-of-the-screen-in-online-experiment/6915 "2019-03-05T13:20:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![spaladin](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/spaladin/32/2474_2.png) [@spaladin](https://discourse.psychopy.org/u/spaladin)\
**Post date:** [March 5, 2019, 1:20pm UTC](https://discourse.psychopy.org/t/how-to-put-mouse-in-the-center-of-the-screen-in-online-experiment/6915/1 "2019-03-05T13:20:53Z")

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Hi everyone!

This should be quite simple, but I cannot find a way how to put the mouse in a particular location of the screen in the beginning of every trial.

Thanks in advance!

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**Author:** ![jon](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/jon/32/22_2.png) [@jon](https://discourse.psychopy.org/u/jon)\
**Post date:** [March 5, 2019, 1:36pm UTC](https://discourse.psychopy.org/t/how-to-put-mouse-in-the-center-of-the-screen-in-online-experiment/6915/2 "2019-03-05T13:36:47Z")

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See previous post:

> [@Setting mouse position online](https://discourse.psychopy.org/t/setting-mouse-position-online/6816):
>
> Hi all, I’m trying to get the mouse cursor to return to the centre of the screen after each loop in my online experiment. Offline / locally, I’ve used the following in a (Builder) code component to achieve this: mouse = event.Mouse() mouse.setPos((0, 0)) but this doesn’t seem to work online. I get the error: TypeError: Cannot read property ‘Mouse’ of undefined Any guidance would be appreciated!

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**Author:** ![spaladin](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.psychopy.org/spaladin/32/2474_2.png) [@spaladin](https://discourse.psychopy.org/u/spaladin)\
**Post date:** [March 5, 2019, 1:42pm UTC](https://discourse.psychopy.org/t/how-to-put-mouse-in-the-center-of-the-screen-in-online-experiment/6915/3 "2019-03-05T13:42:15Z")

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Hi Jon!

So, it’s impossible at the moment… Ok, thanks for your reply and I’m sorry I missed the existing post.

Best,  
Ivan