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adlofts created page: essinit authored by Andrew Lofts's avatar Andrew Lofts
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essinit.md
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# Event and Marks Variables
The pipeline proceeding this script needs to be contain specific events that indicate in-task time and out of task time. This is because ICA analysis is sensitive to messy task time that could contain movement artifacts or non-stationary so we only want to submit the essential data to ICA. To do this the out of task time is flagged using our Out/On/In events to create removal marks. This system uses the [Vised Marks plugin](https://git.sharcnet.ca/bucanl_eeglab_extensions/vised_marks/wikis/home) to do the data flagging.
The pipeline proceeding this script needs to be contain specific events that indicate in-task time and out of task time. This is because ICA analysis is sensitive to messy task time that could contain movement artifacts or non-stationary so we only want to submit the essential data to ICA. To do this the out of task time is flagged using our Out/On/In events to [create removal marks](https://git.sharcnet.ca/bucanl_eeglab_extensions/vised_marks/wikis/marks). This system uses the [Vised Marks plugin](https://git.sharcnet.ca/bucanl_eeglab_extensions/vised_marks/wikis/home) to do the data flagging.
:so: If you are building your own ESS capsule or you are lucky these events can be built into the capsule already. Use the HED tags:
* Custom/Marks/RecStart
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![events](/uploads/38fbc765ee402361dffbc6e0f34c0795/events.png)
If you selected *Manual Mode* then this little GUI will pop up. This GUI simply warns you that you are entering the Vised-Marks editor and that any annotations you add here will be added to the marks structure permanently. The two commands you will be using are:
If you selected *Manual Mode* then this little GUI will pop up. This GUI simply warns you that you are entering the [Vised-Marks editor](https://git.sharcnet.ca/bucanl_eeglab_extensions/vised_marks/wikis/manual-vised-edit) and that any annotations you add here will be added to the [marks structure](https://git.sharcnet.ca/bucanl_eeglab_extensions/vised_marks/wikis/marks) permanently. The two commands you will be using are:
* ```a``` to drop a RecStart event at your cursor
* ```b``` to drop a RecStop event at your cursor
See the example below where we placed events before and after each block of tasks.
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