Trepanation is the practice of drilling a hole in your skull in order to get high. The practice has been around in medical texts from 3000 to 3500 BC. Tribes all over the world have been practicing trepanation to cure ailments such as headaches or insanity.
For obvious reasons the medical literature on the subject is scarce, but practitioners believe that trepanation augments the blood flow to the brain, which in turn helps boost energy and mood levels. There is a ‘brain pulse’ one has a baby which is reduced once the softer parts of the skull harden. Allowing air to enter the skull through trepanation brings back that ‘brain pulse’ so that we may return to that wide-eyed state of infant alertness.
In this documentary, A Hole In The Head, artists, doctors, anthropologists, and enthusiasts, as well as lawyers and researchers debate the pros and cons of the dangerous practice. One researcher in particular who performed the procedure on himself is specifically interested in the subject from a spiritual mind-expanding perspective. Another subject, a victim of an accidental skull fracture praises the benefits of having a hole in her skull. She is interviewed a year later after doctors operated to seal the hole and she remarks not feeling as energetic as before.
Many different perspectives, such as The Placebo Effect, drug addiction, or the general boredom of normal consciousness are touched upon. There is also some very crude documentary footage of self-trepanations performed by a witchdoctor of a tribe in Kenya.
Here is a trailer: