PEMF has been shown to kill cancer within the Brain.
Very specific frequencies are being researched for Very Specific types of brain cancer.
Search Spooky2 forum as links posted several times.
I do think we need to be careful of the POWER for above shoulder placement if you are considering a device other than Spooky2, which has a relatively weak PEMF intensity compared to say a Doug Coil.
Not sure but, too strong a pulse could potentially affect the Vagus Nerve, maybe poorly. Just a guess.
Mostly it is Direct Current methods that are the troublesome method in the brain zone.
I have used an ICES Micro-Pulse on my eyes and brain without issue.
A woman was reported to go blind after using a certain Canadian company's device by Contact method on her eyes.
Who instructed her to do that?!
Dr. Kondrot uses MicroCurrent to help eye issues but, that is likely no more than 600uAmps.
For more details, please check the link: