Merge pull request #4355 from tmorshed/add_eeg

Add EEG as new topic

Author: ahpook

topics/eeg/index.md

@@ -0,0 +1,8 @@
+---
+aliases: electroencephalography
+display_name: EEG
+short_description: Electroencephalography (EEG) - a method for non-invasive recording of brain activity.
+topic: eeg
+wikipedia_url: https://en.wikipedia.org/wiki/Electroencephalography
+---
+Electroencephalography (EEG) is a non-invasive method for recording electrical activity in the brain, first performed on humans by Hans Berger in 1924 [(Berger, 1929)](https://link.springer.com/article/10.1007/BF01797193).