Update EEGLAB_and_MEG_data.md

Author: arnodelorme

tutorials/misc/EEGLAB_and_MEG_data.md

@@ -38,7 +38,7 @@ Let's now plot the data spectrum. Use menu item <span style="color: brown">Plot
 
 Importing CTF MEG data
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-We will use a dataset which is more challenging than the one above. Some CTF datasets have sensor locations associated with them, but this is not always the case. This is the [tutorial data](https://nemar.org/dataexplorer/detail?dataset_id=ds000246) for Brainstorm. This dataset does not have sensor locations. Let's first import it.
+We will use a dataset which is more challenging than the one above. Some CTF datasets have sensor locations associated with them, but this is not always the case. This is the [tutorial data](https://nemar.org/dataexplorer/detail?dataset_id=ds000246) for Brainstorm. This dataset does not have sensor locations. Let's first import it. After starting EEGLAB, select menu item <span style="color: brown">File > Import data > Using the File-IO interface</span>. You are then asked if you want to import a file or a folder. Select the button to import a folder and select the folder *sub-0001_task-AEF_run-01_meg.ds* located in the *sub-0001/meg* subfolder. We recommend you check the checkbox *Convert data trials to continuous data*. CTF data is sometimes stored as trials because it is large, and may not all be processed in memory. Storing the data as trials allows data to be loaded one trial at a time. This limitation is motly obsolete though, as computer memory has increased over the past decade. Filtering data trials can lead to [decrease in statistical power](https://www.biorxiv.org/content/10.1101/2022.12.03.518987v1) and we do not recommend it. MEG data trials are often contiguous so the data trials may be converted back to continuous data. Press OK when done.
 
 ![Screen Shot 2022-12-23 at 11 50 51 AM](https://user-images.githubusercontent.com/1872705/209401820-b78a359b-64e7-42b3-8320-82d400aaa5ef.png)