NeuroAnatomy
Free · nothing to install Mapping the brain in the browser MNI152 · AAL-116 Also on the App Store → Also with your AI of choice, as an MCP server →
The Atlas

3D Region Atlas

A detailed 3D atlas of the human brain, with receptor density maps and a functional breakdown of every region, what goes wrong in it and what damage has shown.

116 parcels · four viewports · receptor densities · slice tool · PNG and 3D export · saved and example maps
Open the atlas →
White matter

Tractography

The white matter’s million fibre pathways, from the HCP1065 population average, in full 3D.

Direction-coloured streamlines · free rotation
Open the tractogram →
The molecules

Molecular

The dopamine and serotonin receptors in three dimensions, with the transmitters and drugs that bind them.

17 receptors · 39 structures · 24 drugs · binding tour · compare
Open the receptors →
Under the microscope

Microanatomy

The neuron and its synapses at the cell’s scale, down to the neurotransmitters and their receptors.

2 cells drawn · 37 structures · explore and test modes
Open the cell →
Cytoarchitecture

Brodmann Area Atlas

Brodmann’s 41 areas of the cortex on a map of both faces of the hemisphere. Tap one and what it does appears beside it.

41 areas · both faces · what each one does
Open the map →
Systems

Network Atlas

The brain’s large-scale networks in six states, from flow to meditation, mapped onto the scan.

6 states · 7 systems · 20 nodes
Open the ring →
The Papers

Visualizing Studies

Published neuroimaging studies drawn directly on the brain, region by region.

1 study drawn · more to come
Open the shelf →
Revision

Neuroscience Practice

Adaptive multiple-choice revision built for the KCL MSc Neuroscience syllabus.

Adaptive questions · session score · explanations
Start practising →
The Book

Digital Textbook

OpenStax’s complete Introduction to Behavioral Neuroscience, in the site’s own pages.

19 chapters · 85 sections · 506 figures · CC BY-NC-SA
Open the book →
On paper

Posters

Two A1 prints from the Microanatomy page: every neurotransmitter drawn to one scale, and the receptors with how tightly each holds its transmitter.

2 posters · A1 · shop opening soon
See the posters →
For AI assistants

MCP Server

Use the MCP server with your AI of choice. Any assistant that speaks the Model Context Protocol can ask the atlas what a region does, where a receptor is densest or how the brain changes in a state, and each answer links to the view it describes.

9 tools · no key needed · sign in only for your own models
How to connect →
On the way

Coming soon

Three things being built now, none of them ready to open yet.

  • Circuit AtlasThe 3D Region Atlas with the traffic drawn on: animated paths run from region to region, so a circuit such as the Hallucinations study’s plays out on the brain.
  • Regions in depthA detailed functional breakdown of every region, written from the research, beyond the line the atlas gives each one now.
  • The MCP server, extendedNew tools for your AI of choice: the Circuit Atlas’s paths and the detailed breakdowns, answered in any assistant that speaks the protocol.
From the developer

A Message from the Developer

Fadil Karim · built by one engineer · free to use
Read the message →
116
AAL parcels
41
Brodmann areas
0.74 mm
MNI152 voxel
6
brain states
0
things to install

Everything here runs in the page: the volumes, the atlas and the tractogram are shipped as files and rendered on your own machine, so nothing you look at leaves it. Rendered with NiiVue (Rorden lab) · MNI152 template · AAL atlas · set in Flux, Newsreader & Prata · © 2026 NeuroAnatomy About · Privacy & support · Terms of use.