Plasticity: The ability of neural connections to change, which is similar to learning. Creating new connections between neurons helps form memories.
Regeneration: The ability of nervous tissue to replicate or repair. Limited in the central nervous system but possible in the peripheral nervous system under certain conditions.
Plasticity
Definition: Ability for neural connections to change.
Similar to learning and memory.
New connections form by interacting with material repeatedly.
Influenced by experience.
Learning Process:
Interaction with material should occur 21 times on average to create new memory or plasticity.
Use various methods: listening, reading, writing, flashcards, etc.
Writing by hand is the most effective way to create plasticity.
Regeneration of Nervous Tissue
Central Nervous System (CNS)
Limited Regeneration:
Little to no repair once neurons are damaged.
Neurons do not regenerate post-birth due to inhibitory factors.
Inhibitory Factors:
Neuroglial cells, especially oligodendrocytes, inhibit neuron formation.
Absence of growth-stimulating cues post-birth.
Rapid scar tissue formation prevents new neurons from forming.
Peripheral Nervous System (PNS)
Possible Repair:
Damaged neuron repair possible if certain conditions are met.
Cell body must be intact.
Schwann cells must be functional.
Scar tissue must not form too quickly.
Repair Steps:
Chromatolysis: Redistribution of Nissl substances for protein synthesis.
Wallerian Degeneration: Biochemical and structural changes for axonal regeneration.
Regeneration Tube Formation: Schwann cells form a tube around the axon to aid repair.
Conclusion
Understanding plasticity and regeneration is crucial for comprehending how the nervous system can adapt and repair under different conditions.
Effective study habits increase neural plasticity, enhancing learning and memory.