Research from the 1960s onward demonstrates that the adult brain remodels itself continuously.

The word only works if we contrast it with the static brain Santiago Ramón y Cajal decreed 120 years ago.

Today, "neuroplasticity" is used as unverifiable self-help, losing a grip on scientific precision.

Neuroplasticity is a correction masquerading as a discovery. The error that was corrected was that for most of the 19th and 20th centuries, neuroscience operated under the assumption that the adult brain was a finished product.

1906 Nobel laureate Santiago Ramón y Cajal declared what became one of neurology’s central tenets: “In adult centers the nerve paths are something fixed, ended, immutable. Everything may die, nothing may be regenerated.”

This decree was repeated in textbooks, taught in medical schools, and practiced by neurologists for the better part of a century. Until the 1990s, clinicians treating brain damage operated under Cajal's assumption that whatever was lost was gone permanently - that the adult brain, unlike bone or muscle, could not reorganize or grow back. The brain you had at twenty-five was the brain you would die with. Period.

Scientific Evidence Revealing Neuroplasticity

This, it turns out, was categorically wrong. Research from the 1960s onward demonstrates that the adult brain remodels itself continuously in response to experiences: synaptic connections strengthen or weaken based on patterns of activation, dendritic structures........

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