How does thinking/concentration create an almost pressure-like sensation in the head and is this feeling directly affected by the process of accessing thoughts?
I’m not sure exactly what you’re describing but here’s a thought. When you think hard, those [brain cells that are doing the heavy lifting need more energy](https://www.sciencedaily.com/releases/2019/07/190715094611.htm). That energy gets there with extra blood flow, and when extra blood is in the area, it swells slightly and might feel like pressure.
I’m not sure exactly what you’re describing but here’s a thought. When you think hard, those [brain cells that are doing the heavy lifting need more energy](https://www.sciencedaily.com/releases/2019/07/190715094611.htm). That energy gets there with extra blood flow, and when extra blood is in the area, it swells slightly and might feel like pressure.