The Story, in One Minute

Why this site exists, before you choose where to go in it.

Brains compute through wiring — billions of cells connected by trillions of synapses — and for most of history that wiring was invisible. It no longer is. Electron microscopes can now photograph every wire in a piece of brain, and in 2025 Nature Methods named EM connectomics its Method of the Year: something that used to be impossible has quietly become an industry. The maps already exist for a worm, a fly, and cubic millimeters of mouse and human cortex; the next expedition is a whole mouse brain. Getting there is a relay with seven legs, and every part of this site teaches one of them:

  1. Stop time. Chemicals freeze the tissue mid-thought; heavy-metal stains ink every wire's outline.
  2. Slice. A diamond knife shaves it thousands of times thinner than a hair.
  3. Image. Electron microscopes photograph every slice — about two million gigabytes per cubic millimeter.
  4. Align. Software reassembles the slices into one seamless 3D volume.
  5. Segment. AI colors in every neuron and finds every synapse.
  6. Proofread. Humans fix the AI's mistakes and make the map true.
  7. Discover. Scientists read the finished map and settle decades-old debates.
Read the Full Story (about 40 min, fully sourced) Walk the Pipeline in Detail

Choose Your Pathway

Five ways in, by who you are rather than what you want to read. Three of them name the learner persona they were written for.

For Students

A guided path from fundamentals to connectomics analysis — pick your track, do the labs, end each unit with an artifact. Written for readers like Julian, a first-generation undergraduate, and Maya, a graduate student crossing into a new field.

Plan Your Path

For Scientists

The reference layer: content library, dataset access with versions, the atlas of specs and acronyms, and open problems scoped for teams. Written for readers like Amir, an AI scientist arriving from outside neuroscience.

Open the Core

For Mentors

The facilitator guide and 25 ready-to-run session kits: what to say, what to watch for, and how to grade the reasoning. Written for readers like Dr. Linh Nguyen, running a lab and a teaching load at once.

Facilitator Guide

For Programs & Funders

The education model behind the site, the evidence it rests on, and how NeuroTrailblazers fits the BRAIN CONNECTS ecosystem.

See the Model

Why This Work Matters

Research-ready learners

We connect foundational learning to authentic research tasks so students can contribute earlier and more confidently.

Mentorship that scales

Our framework supports high-quality mentorship across in-person, hybrid, and distributed learning settings.

Open dissemination

We prioritize transparent tools and reusable materials that strengthen the broader connectomics ecosystem.

NeuroTrailblazers is supported by the NIH BRAIN CONNECTS program through the Mouse Connectome Project.

Read the Neuronauts Expedition