5th edition 2027

New “Functional Growth Chart” Maps Brain Development from Birth to 100 Years

Published on: Mar 26, 2026

This study introduces a novel framework for understanding how the brain’s functional architecture evolves across the lifespan, offering a reference for what “typical” brain organization looks like at different ages. Much like physical growth charts track height and weight, this approach maps how different brain regions communicate over time.

Researchers analyzed resting-state fMRI data capturing brain activity while participants were at rest from nearly the entire human lifespan, from infancy to 100 years. The study included 3,972 scans from 3,556 healthy individuals, creating a comprehensive baseline for brain development and aging.

Focusing on the cortex, responsible for cognition, perception, and decision-making, the team used gradients continuous patterns of functional connectivity rather than rigid brain regions. These gradients revealed three key organizational patterns:

• A shift from sensory processing (vision, hearing, touch) to higher-level thinking
• A distinction between visual systems and movement-related regions
• A separation between attention/control systems and those linked to memory and internal thought

The findings show that the most significant brain reorganization occurs in early childhood, particularly within the first four years, when sensory and motor systems dominate before higher cognitive networks become more defined.

Importantly, different brain systems mature at different rates. Some gradients strengthen through adolescence and peak in early adulthood before declining with age, while others develop earlier and gradually weaken over time indicating multiple developmental timelines within the brain.

The study also highlights that individuals whose brain patterns closely match typical developmental gradients tend to perform better on cognitive tasks such as memory and processing speed. Additionally, links between brain structure, function, and gene expression are strongest early in life, suggesting that genetics establish an initial framework that is later refined by experience.

Source: https://news.unchealthcare.org/2026/03/new-functional-growth-chart-shows-how-the-human-brain-changes-from-birth-to-age-100/

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