All nerves have an outer <neurolemmal> sheath.
- allows nerve regeneration
Two types of nerves inside the outer sheath
Myelination is about leaking electrons,
not insulation, as we are constantly misinformed about.
We are born without myelination of nerves.
The myelin is laid down as we begin to crawl, communicate and walk.
These activities require huge interaction between billions of nerve cells.
Accomplished by 'leaking' electrons between themselves.
Myelin is about leaking, not insulating.
Why myelin allows leaking of electrons?
- coordinated nerves, complex muscular activities
- tongue movements, chewing, talking, babies cannot
- eye coordination, alignment, focus, babies cannot
- digestion, complex, coordinated digestive enzymes with content movement, babies cannot
- rolling over, arm and leg coordination
- crawling, navigation, complex memory of movements stored in myelin
- standing up, highly coordinated with inner ear for balance, non-brain muscle activities
- talking, highly complex, tongue muscles, sounds, brain memory, eye contact, multiple languages
None of these activities are in our genetic code.
Myelin allows learning, memory, personality
Non-myelinated nerves allow simple sensory input to the brain
- not coordination
Most myelin is laid down during the years of learning to crawl, eat, walk, talk
Myelin continues to be laid down throughout adult life, but at a slower rate.
Loss of myelin is seen in dementia and loss of memory.
Can develop more at higher speeds when we learn.