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?
It just says that cancer cells near "active" brain cells are affected. So it would depend on where in the brain the cancer is. It also mentions one kind of cancer, diffuse intrinsic pontine glioma, occurs in the brain stem. Since you kinda use that all the time for stuff like breathing, it might not matter what kind of "thoughts" you have.
> 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...