Dr. Kastrup has a PhD in computer engineering, and worked on the CERN Large Hadron Collider (i.e., "atom smasher") in Switzerland.
Kastrup notes that much of the media has misinterpreted the study to mean that taking LSD correlates with increased brain activity.
In fact, that is not what the study says It suggests that a reduction of brain activity is the result of ingesting psychedelics. This is consistent with the findings of earlier studies of this type.
This is also consistent with the model of the brain as a reducing valve for reality, tuned to ensure physical survival. In other words, the brain is specialized to only let in the input necessary to ensure survival of the body. (This valve phenomenon was well-observed in Aldous Huxley's "Doors of Perception.")
So, when LSD is introduced, it has a strong tendency to relax and open up that reducing valve, which lets more of the "screened out" aspects of creation come through the consciousness floodgates. It sort of "falls asleep at the wheel" of it's job to only let in sensory input pertinent to physical survival.
From the book "Doors of Perception"...
According to such a theory, each one of us is potentially Mind at Large. But in so far as we are animals, our business is at all costs to survive. To make biological survival possible, Mind at Large has to be funneled through the reducing valve of the brain and nervous system. What comes out at the other end is a measly trickle of the kind of consciousness which will help us to stay alive on the surface of this particular planet.
However, since this doesn't fit in with a common scientific model that consciousness is generated by the brain, a misinterpretation of the findings can slip by easily. Unconsciously, reporters focus on a pre-conceived notion that LSD causes an increase in brain activity, not a decrease.



http://michaelprescott.typepad.com/michael_prescotts_blog/2015/11/home-sweet-home.html
Here's another book about trickery by mediums, written by Edward Lunt, published in 1903.