medium · LSAT Reading Comprehension
In a discussion of adult neurogenesis, a passage stresses that newly generated neurons must do more than simply come into existence: they must survive, migrate to appropriate locations, differentiate into the correct cell types, and integrate into existing circuits before they can contribute to brain function.
The author most likely includes this detail in order to emphasize that:
- Producing new neurons is merely one step within a multi-stage process needed for functional brain repair.
- The adult brain cannot repair itself at all without pharmacological intervention.
- Rodents possess a more sophisticated neuronal migration process than humans do.
- Alzheimer's disease works primarily by blocking neurons from migrating to the hippocampus.
- Newly generated neurons invariably complete every stage and successfully repair the brain.
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