Interactive Brain Atlas
Map the Mind
Explore the regions of the human brain, what they do, and how they relate to neurological and psychiatric conditions - with anatomical diagrams and sources for every article.
Start Exploring
Interactive
Brain Explorer
Select any region on an anatomical map, then quiz yourself.
14 articles
Brain Regions
From the four lobes to the deep structures: what each part does.
16 articles
Conditions
Which regions are involved, and why the symptoms happen.
5 topics
How the Brain Works
Memory, emotion, vision, language, and movement, region by region.
5 comparisons
What's the Difference?
Easily confused terms, side by side.
Quizzes & printables
Learn & Test Yourself
Condition quiz, flashcards, and labelling worksheets.
Popular Questions
The Brain in Numbers
86B
Estimated neurons
100T
Estimated synapses
1.4kg
Average weight
20%
Body energy use
Commonly cited estimates, which vary by source and method. See NINDS Brain Basics and Herculano-Houzel's review of human brain numbers.