# EEG data preprocessing of raw csv file with channel features (AF7, TP9, TP19, AF8, Fpz)

**URL:** <https://mne.discourse.group/t/eeg-data-preprocessing-of-raw-csv-file-with-channel-features-af7-tp9-tp19-af8-fpz/7530>\
**Category:** Support & Discussions\
**Tags:** preprocessing, eeg\
**Created:** [September 15, 2023, 8:16am UTC](https://mne.discourse.group/t/eeg-data-preprocessing-of-raw-csv-file-with-channel-features-af7-tp9-tp19-af8-fpz/7530 "2023-09-15T08:16:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dhivya\_Bharkavi](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/dhivya_bharkavi/32/3037_2.png) [@Dhivya\_Bharkavi](https://mne.discourse.group/u/Dhivya_Bharkavi)\
**Post date:** [September 15, 2023, 8:16am UTC](https://mne.discourse.group/t/eeg-data-preprocessing-of-raw-csv-file-with-channel-features-af7-tp9-tp19-af8-fpz/7530/1 "2023-09-15T08:16:23Z")

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Raw EEG csv file contains huge number of samples and 5 channel feature. How to plot ICA of five frequency are delta, theta, alpha, beta and gamma, data preprocessing, its has not event so, how to assign a event in this csv file and how to feature extraction using this file

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**Author:** ![cbrnr](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/cbrnr/32/1409_2.png) [@cbrnr](https://mne.discourse.group/u/cbrnr)\
**Post date:** [September 15, 2023, 11:44am UTC](https://mne.discourse.group/t/eeg-data-preprocessing-of-raw-csv-file-with-channel-features-af7-tp9-tp19-af8-fpz/7530/2 "2023-09-15T11:44:30Z")

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You will have to convert the data into a suitable MNE object. I recommend this tutorial as a starting point: [Creating MNE-Python data structures from scratch — MNE 1.5.1 documentation](https://mne.tools/stable/auto_tutorials/simulation/10_array_objs.html#tut-creating-data-structures)

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**Author:** ![Dhivya\_Bharkavi](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/dhivya_bharkavi/32/3037_2.png) [@Dhivya\_Bharkavi](https://mne.discourse.group/u/Dhivya_Bharkavi)\
**Post date:** [September 21, 2023, 4:06am UTC](https://mne.discourse.group/t/eeg-data-preprocessing-of-raw-csv-file-with-channel-features-af7-tp9-tp19-af8-fpz/7530/3 "2023-09-21T04:06:37Z")

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Then I want the feature extraction for this four channel