# Might be no ACPC alignment

**URL:** <https://mne.discourse.group/t/might-be-no-acpc-alignment/4022>\
**Category:** Support & Discussions\
**Created:** [November 25, 2021, 4:29pm UTC](https://mne.discourse.group/t/might-be-no-acpc-alignment/4022 "2021-11-25T16:29:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![BarryLiu97](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/barryliu97/32/33_2.png) [@BarryLiu97](https://mne.discourse.group/u/BarryLiu97)\
**Post date:** [November 25, 2021, 4:29pm UTC](https://mne.discourse.group/t/might-be-no-acpc-alignment/4022/1 "2021-11-25T16:29:09Z")

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Hi, I’ve got MNI coordinates of SEEG. As in the tutorial of locating the SEEG, I should do ACPC alignment although I didn’t. SO I’ve got this  
 ![1637858586(1)](https://global.discourse-cdn.com/free1/uploads/mne/original/2X/5/5f72f7eada47e643ec39801ec92d04c8d705cf1b.png)

Is this because of no ACPC alignment?The brain is from this specific subject. For I see [here](https://mne.tools/mne-bids/stable/auto_examples/convert_ieeg_to_bids.html) says ‘mri’ frame needs ACPC alignment. Others I need to plot that in ‘fsaverage’.  
Also, does ‘mri’ coordinate frame means ‘world’ coordinate?