Where does a thought start?

Where does a thought start?

I find some of my best thoughts come to me as I'm sitting on the stool having a bowel movement.

Thanks to all who replied.

From the information thus far, it *seems* many thoughts are started from possibly millions/billions? of impulses from nerves that trigger neurons that trigger other neurons that result in a "culmination" of "whatever" that results in a "thought", ie that "voice" we hear in our head.

As indicated in this link:

www.thebrain.mcgill.ca...

it states:

"What makes the human brain so powerful is the formidable ability of its basic unit, the neuron, to integrate information from myriad sources. "

So far, all I have read about is the physical sources within our body that are linked to body parts.

Now...has it been found, scientifically, if:

1) One of these "myriad of sources" exist that accepts electromagnetic energy or other forms of unseen energy that stimulates neurons?

If it does, could it be extrapolated that:

1) Electromagnetic energy (ie microwaves etc) can affect our thoughts?
2) Telepathy is possible?

...and others...

Cheers

JS