First Video of A Thought in the Brain

I often post about brain-related issues and music practice. This video is more general than usual, but I present it to you because of its interesting uniqueness. The first video footage of a thought sparking through neurons (the video says it’s 3x normal speed). Details about the process here.

This made me think about a few things: How were those neurons and the connections “built” or grown? Is a firing of neurons really a thought? What is a thought?