word
synaptic pruning
sih-NAP-tik PROO-ning
sɪˈnæptɪk ˈpruːnɪŋListen
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Syllable breakdown
synapticpruning
Dictionary meaning
the developmental process by which the brain eliminates excess synapses that are rarely or never used, strengthening the most active neural circuits; peaks in infancy and again in adolescence; allows the brain to specialize and operate more efficiently; disruption of normal pruning is implicated in schizophrenia and autism spectrum disorder
Examples
- Synaptic pruning during adolescence reshapes the teenage brain, explaining some emotional volatility.
- Use it or lose it — synaptic pruning ensures that underused neural connections are removed.
Pronunciation tips
A metaphor from horticulture: like pruning a tree, the brain removes weaker branches to let stronger ones thrive.
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