After what he had told, I could scarcely imagine what profounder secrets he was saving for the morrow; but at last it developed that his trip to Yuggoth and beyond - and my own possible participation in it - was to be the next day’s topic. He must have been amused by the start of horror I gave at hearing a cosmic voyage on my part proposed, for his head wabbled violently when I showed my fear. Subsequently he spoke very gently of how human beings might accomplish - and several times had accomplished - the seemingly impossible flight across the interstellar void. It seemed that complete human bodies did not indeed make the trip, but that the prodigious surgical, biological, chemical, and mechanical skill of the Outer Ones had found a way to convey human brains without their concomitant physical structure.
The Whisperer in Darkness by H.P. Lovecraft
A Mi-Go device used to hold the living brain of a captive.
Two types of Brain Cylinder have been reported:
- One that maintains the consciousness and mind of the captive and to which equipment to provide sight, hearing and speech can be attached.
- This type can apparently also be used as a 'slaved' control system according to the reports from the Nemesis Expedition.
- One that keeps the brain alive but only to relay a single spoken message when a lever is depressed.