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Summary
On episode 336 of 40+ Fitness, Coach Allan sits down with Dr. Niels Birbaumer, a neuroscientist known for groundbreaking, sometimes controversial work on how the brain rewires itself, to discuss his book Your Brain Knows More Than You Think.
Niels’ central argument is that the brain is never truly fixed. Behavior is driven by a reward circuit constantly checking whether a “desired effect” has been achieved, and that circuit operates almost entirely below conscious awareness. Even traits we assume are locked in, like personality, turn out to be far more plastic than expected.
The conversation covers how completely paralyzed, locked-in patients can still reach a high quality of life as their brains adapt, how brain-machine interfaces are helping chronic stroke patients regain movement, and how emotional recognition can survive in advanced Alzheimer’s even after conscious memory is gone.
Links
- https://40plusfitness.com
Key Takeaways
- Behavior is driven by an unconscious reward, or “desired effect,” circuit. This part of the brain constantly checks whether a wish is being fulfilled, and roughly 90 percent of the process happens outside conscious awareness, even though we experience our choices as deliberate.
- Even complete paralysis doesn’t prevent a high quality of life. In locked-in syndrome, once the brain’s “wanting” circuit adapts to the fact that no external wish can be fulfilled, patients can reach genuine well-being, something Niels has observed directly in his clinical work.
- Personality is more genetically rooted than expected in one specific area: political opinion. A landmark twin study found political opinion was the trait most consistently shared between identical twins raised apart, more than most traits people associate with personality.
- Environment, not just genetics, drives most personality development. The same twin study showed that when separated twins grew up in similar environments they developed similarly, and when environments differed sharply, so did their personalities.
- Extreme exposure-based therapy can permanently rewire fear circuits. Niels describes an intense, consent-based immersion treatment for contamination-fear patients that eliminated their compulsive washing behavior permanently, though he notes such methods are no longer allowed today.
- Brain-machine interfaces let chronic stroke patients “reconnect” a paralyzed limb. By feeding the brain’s own movement command back to a prosthetic device thousands of times, new neural pathways form around the stroke damage and restore functional movement.
- Emotional recognition can survive after conscious memory is destroyed. Even in advanced Alzheimer’s, brain activity shows patients still unconsciously distinguish a family member from a stranger, information caregivers can use to respond to a patient’s mood even without verbal cues.
- Circuits once assumed to be fixed for life, including emotional and personality circuits, are as plastic as the rest of the brain. New technology now makes these deep, old circuits visible and directly modifiable, a genuine shift from what was long assumed to be unchangeable.
“We can change. At any time, in any direction.”
Dr. Niels Birbaumer
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