Now Reading: Brain scaffold explains learning plateau, study finds
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Brain scaffold explains learning plateau, study finds
US researchers have identified a physical mechanism behind the frustrating learning plateau: the extracellular matrix (ECM), a scaffold around brain cells, loosens during early skill practice and rebuilds within a day, then…
The Story in Brief
US researchers have identified a physical mechanism behind the frustrating learning plateau: the extracellular matrix (ECM), a scaffold around brain cells, loosens during early skill practice and rebuilds within a day, then stops once the skill is mastered. The study, published in Proceedings of the National Academy of Sciences, tracked this cycle over short intervals, showing the adult brain is far more dynamic than previously thought.
Led by Assistant Professor Melissa Caras at the University of Maryland, the team used an enzyme to disrupt the ECM and found it slowed learning and, after mastery, caused performance to slip. The finding suggests the brain actively regulates when to learn and when to protect gains, potentially explaining plateaus in language learning as the brain shifts from a 'ready to learn' state to a stable one.
The Indian Opinion
This study punctures two lazy narratives: that learning plateaus are purely motivational failures, and that adult brains are rigid. The ECM's daily rebuilding cycle shows the brain actively decides when to stop learning, a feature, not a bug. Sensational claims about 'unlocking unlimited learning' should be ignored. The real test will come when researchers try to safely modulate the ECM in humans without disrupting existing skills. Can we tweak the scaffold without forgetting what we already know? That is the crore-rupee question.
Source: rediff.com
This story was synthesised by AI from the source linked above.
