I, for one, always thought that the action of a psychedelic was dependent on an increase in blood supply to the brain, which is allowing billions more brain cells to function, and thereby explaining the expanded sense of consciousness. To my surprise, this research has showed exactly the opposite. It showed a decrease of blood flow to the brain.
And, what is specifically interesting is, it shows a decrease in this essential network of centers called the default mode network, which it is hub centers, which have the most connections. So they are the controlling centers in the brain, equivalent in Freudian language to the ego. And, in the psychedelic state, they are the centers, which lose the most blood supply.
And so, how does a psychedelic experience happen, then? It happens by reducing the constriction on sensation, experience. So, suddenly, we are flooded with perception, which is normally repressed. And that explains why one has novel and creative insights on a psychedelic, or can have.
