Brainless But Not Mindless
Thomas R. Verny M.D.
Thomas R. Verny M.D.
Quote:
- The size of a human brain is unrelated to its information content, intelligence, or capacities.
- The brain never works alone.
- Cells in the body (somatic cells, immune cells) form a network that acts like a backup disk for the brain.
Quote:I started to explore this subject six years ago, when I read an article reprinted from Reuters Science News entitled, “Tiny brain no obstacle to French civil servant.” It seems that in July 2007, a 44-year-old French man went to a hospital complaining of a mild weakness in his left leg. When doctors learned that the man had a spinal shunt removed when he was 14, they performed numerous scans of his head. What they discovered was a huge fluid-filled chamber occupying most of the space in his skull, leaving little more than a thin sheet of actual brain tissue. It was a case of hydrocephalus, literally—water on the brain (Fig. 1). Dr. Lionel Feuillet of Hôpital de la Timone in Marseille was quoted as saying, “The images were most unusual ... the brain was virtually absent.” The patient was a married father of two children and worked as a civil servant apparently leading a normal life, despite having a cranium filled with spinal fluid and very little brain tissue.
Quote:Octopuses lack a central brain. Each of an octopus’s eight arms has an extensive number of neurons resulting in the equivalent of having a “brain” in each appendage that is capable of receiving and processing information about the environment. These findings question a clear-cut link between brain size and cognitive skills.
Quote:I suggest that people with missing brain tissue who appear to act quite normally perform as well as they do not because of “neuroplasticity” or “recruitment” of unaffected areas in the brain, though no doubt some of that applies, but because the brain never works alone. Its function is inextricably linked to the body and to the outside world. In the individual who lacks a large part of their cortex, the neurons in the cranial nerves, spinal cord, and other cells in the body (somatic cells, immune cells, etc.) form a network that is constantly communicating with the brain—or what’s left of it—and acts like a backup disk on a computer, containing snippets of memory and functionality that collectively contribute to near normal cognition and behavior.
'Historically, we may regard materialism as a system of dogma set up to combat orthodox dogma...Accordingly we find that, as ancient orthodoxies disintegrate, materialism more and more gives way to scepticism.'
- Bertrand Russell
- Bertrand Russell