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Published on: January 23, 2018
Epigenesis and the evolution of the human brain
1Center for the Health Sciences, University of California, Los Angeles 90024.
Medical Hypotheses
|January 1, 1988
Summary
Genetic changes in neuroblast proliferation regulation drove epigenetic shifts in synapse stabilization, altering human brain connectivity. This supports punctuational evolution of the human brain.
Area of Science:
- Neuroscience
- Evolutionary Biology
- Genetics
Background:
- Human brain evolution is complex, involving genetic and developmental factors.
- Previous theories often overlook the interplay between genome regulation and neural development.
- Understanding brain evolution requires integrating developmental processes with evolutionary pressures.
Purpose of the Study:
- To propose a novel hypothesis for human brain evolution.
- To link genetic regulation of neurogenesis with synaptic plasticity.
- To explain changes in cerebral connectivity through an evolutionary lens.
Main Methods:
- Hypothesizing based on established concepts of cell proliferation and synaptic stabilization.
- Integrating genomic regulation with epigenetic mechanisms.
- Comparing the proposed model with existing theories like sociobiology and structuralist grammar.
Main Results:
- Genetic alterations in neuroblast proliferation regulation are hypothesized to cause epigenetic changes.
- These epigenetic changes lead to selective stabilization of synapses.
- This process results in significant alterations in cerebral connectivity.
Conclusions:
- The proposed hypothesis offers a mechanism for rapid evolutionary changes in the human brain.
- This model aligns with the punctuationalist theory of evolution.
- It provides an alternative framework to sociobiology and structuralist grammar for understanding human nature.
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