“These findings indicated that some RF-EMF may be correlated with more severe migraine headaches.”
Correlation is not causation.
The study also does little to deal with the fact that the subjects taking part in the study would likely expect to experience more headaches/migraines when using mobile phones/WiFi and would therefore end up having more headaches/migraines as a result, known as the nocebo effect. This might explain why having a phone within 1m of their head while they slept made no difference, as no nocebo effect when you are asleep.
Sorry, totally off topic, but this study is evidence of very little, certainly not the ability of EMF to affect the human brain. Not trying to have an argument or to diminish the experiences of others, but we need to be very careful when posting such studies as evidence of one thing or another.