The article does not elucidate and I don't have access to the full article, but is this for any kind of brain activity or a particular kind of thought - perhaps attached to high stress or anxiety?
> The synaptic protein neuroligin-3 (NLGN3) was identified as the leading candidate mitogen, and soluble NLGN3 was sufficient and necessary to promote robust HGG cell proliferation. NLGN3 induced PI3K-mTOR pathway activity and feedforward expression of NLGN3 in glioma cells.
So unless high stress/anxiety lead to increased production of NLGN3...