What to do now — guidance by position.
The current status in Chapter 3 and the dependency structure in Chapter 4 make it possible to identify the buttons that, when pushed, actually move the whole field. This chapter states the field-wide priorities first, then gives concrete suggestions for researchers, students, funders and individuals. It ends with something equally important: what not to do.
6.1 Priorities
Five buttons that move the whole field.
| # | Priority | Why it is rate-limiting | Who is working on it |
|---|---|---|---|
| P1 | Fully automated proofreading — cutting AI segmentation error rates by orders of magnitude | The mouse connectome (M3) essentially depends on it. Straight extrapolation of manual proofreading gives thousands of person-years | Google, Princeton and E11 among others. The area with the highest demand for people1 |
| P2 | The science of inferring dynamics from structure — recovering synaptic weights and modulatory state from EM morphology | Chapter 2's "greatest scientific uncertainty". A finished map will not run without it | MICrONS validation work and digital-twin approaches have reached the entrance2 |
| P3 | Validation benchmarks — extending the ZAPBench pattern to nematode, fly and mouse | Without a yardstick for "it worked", neither progress nor investment decisions are possible | ZAPBench is the first instance. Standardised behaviour and perturbation batteries are a blank space3 |
| P4 | Scientific validation of preservation — quantifying ASC quality in human post-mortem brains; demonstrating preserve-then-read-out | The only axis relevant to people alive now. Unvalidated adoption is an ethical risk; validation removes the time constraint | The Nectome preprint and BPF evaluations exist, but independent verification and standards are lacking45 |
| P5 | Getting ahead on ethics and governance — consent design, emulation welfare, brain-data protection | Reactive handling risks halting research; proactive work turns social trust into an accelerant | Academic proposals exist (Sandberg 2014, Metzinger 2021) but institutionalisation is at zero67 |
6.2 For Researchers
For researchers and engineers: open problems by axis.
| Axis | Problems worth working on |
|---|---|
| 1. Mapping | Self-correcting segmentation, including barcode-assisted approaches such as PRISM; integrating molecular annotation of transmitters and receptors at synapses; hybrid pipelines combining expansion microscopy, X-ray and EM |
| 2. Readout | Stable long-term recording at 10⁵-neuron scale in behaving mammals; registering recorded and structural data from the same animal; BCI channel density and electrode lifetime |
| 3. Modelling | Systematic validation of the mapping from EM morphology to physiological parameters (MICrONS is the test bed); state-space models of neuromodulation; identifying and implementing biological learning rules |
| 4. Running | Memory and communication design for spiking simulators at 10⁹–10¹¹ neurons; standardising body and environment models (generalising the NeuroMechFly line); automatic mapping onto neuromorphic hardware |
| 5. Preservation | Quantitative evaluation of ASC quality in human post-mortem brains; end-to-end demonstration of preserve → EM → reconstruct; intraoperative monitoring of perfusion quality |
| 6. Validation | Activity-prediction benchmarks portable across species; protocols that eliminate degeneracy through perturbation response; a white paper defining emulation pass criteria |
Because the problem is cross-disciplinary, there are entry points well outside neuroscience proper: machine learning (P1, P3), systems software and HPC (axis 4), microscopy, optics and materials (axes 1 and 5), control and robotics (axis 4), statistics and causal inference (axes 3 and 6), and bioethics and law (P5).
6.3 For Students
For students and career changers: a learning path.
- Foundations, whichever route you take. A standard computational neuroscience text (Dayan & Abbott, Theoretical Neuroscience), the basics of machine learning, and a close reading of the two central documents in the resources: the 2008 roadmap8 and the State of Brain Emulation Report 20251. Neuromatch Academy is a high-quality free entry point9.
- Data and tools you can touch today. FlyWire (explore and analyse the whole fly connectome in a browser)10, MICrONS Explorer (mouse structure plus function), ZAPBench (enter your own model for whole-brain activity prediction)3, and OpenWorm (contribute code to the nematode simulation)11. Nearly all the field's major data is public — the barrier to entry is doing the work, not holding the degree.
- Choosing a lab or organisation. Connectomics (Princeton, Harvard, Janelia, Allen, Google), modelling (Allen, Stanford, Baylor, the EPFL lineage), preservation (21st Century Medicine, Nectome, university brain banks), emulation execution (Eon, Open Brain Institute), theory and ethics (Oxford and philosophy departments generally). Chapter 3's player table doubles as a career map.
- Community. Carboncopies' public workshops12, the Foresight Institute's WBE group, and conferences such as COSYNE and SfN.
6.4 For Funders & Policymakers
For funders and policymakers.
- The leverage is in P1–P3. A whole mouse connectome is a multi-hundred-million-dollar, decade-scale undertaking, but the rate limiter is proofreading automation and validation standards rather than instruments. Prize-based funding (the BPF is the working example5) and benchmark-based funding are highly efficient even at small scale.
- Funding stability is itself a deliverable. The swing in the US BRAIN budget — halved between 2023 and 2025, restored in 202613 — was maximally ill-suited to a decade-long data programme. Multi-year commitments and diversification across public, philanthropic and private sources are the structural prescription.
- Public involvement in validating preservation. Preservation services already exist in the market. Establishing scientific verification and audit standards is neither promotion nor prohibition; it is consumer protection, and it is the most urgent policy gap.
- Ethics ahead of time. Welfare guidelines for animal emulations, brain-data protection (neurorights), consent design around assisted death. Building institutions is cheaper than building technology, and the social cost of being late is higher.
6.5 For Individuals
For individuals: six realistic options.
- 1. Understand it accurately. Start with Chapters 2 and 3 and the introductory books in resources. If you can explain why both "certain by 2045" and "already possible today" are wrong, that is a sufficient starting point.
- 2. Track it. Follow the indicators in Chapter 3's watchlist — the zebrafish release, the 10 mm³ mouse work, Eon's mouse programme — on a yearly basis. Judging by indicators rather than headlines protects against both hype and despair.
- 3. Participate. FlyWire was completed partly through citizen-scientist proofreading10, and OpenWorm accepts code contributions11. For donations, the BPF, OpenWorm and directed gifts to university labs are the most transparent options.
- 4. Keep records (a weak backup). Diaries, audio and video are not a substitute for preserving a brain, but they have limited value as future validation material, as a legacy, and as a behavioural trace. Commercial "digital clone" and "AI memorial" services replay records; they are not uploading, and should be used with that understood.
- 5. Evaluate brain preservation soberly. See the table and caveats below. This is not demonstrated life extension but a long-horizon bet in which only structural preservation is guaranteed. If you are considering it, satisfy four conditions first: (a) understand the scientific limits (Chapter 3, axis 4), (b) agreement with family, (c) after-death logistics and legal paperwork in order, and (d) a cost structure that does not damage your household finances.
- 6. Stay alive and healthy. Unglamorous, but in expectation the most reliable strategy is being around when the technology matures. Standard preventive medicine and health habits are a precondition of every upload argument ever made.
Preservation providers, August 2026 (for reference)
| Organisation | Method | Region | Indicative cost | Notes |
|---|---|---|---|---|
| Alcor | Cryopreservation (vitrification) | United States | ≈$80K brain / ≈$220K whole body | Founded 1972, the oldest provider. Commonly funded through life insurance |
| Cryonics Institute | Cryopreservation | United States | from ≈$28K whole body | Low-cost option; transport billed separately |
| Tomorrow Bio | Cryopreservation (vitrification) | Europe | ≈€75K brain / ≈€200K whole body | Europe's first integrated standby and transport operation |
| Oregon Brain Preservation | Chemical fixation (ASC family) | US, Oregon area | Low cost; free places in-region | Non-profit, research-donation based. Operational use of ASC-family methods |
| Nectome | ASC (research stage) | — | No service offered | Research only. Assisted-death-compatible protocol preprint in 20264 |
Costs are approximate figures from each organisation's published information as of 2026 and change over time; always check the official source. This table is informational and is not a recommendation to enter any contract.
6.6 Regional Notes
Regional notes.
- United States. Home to most of the frontier — BRAIN CONNECTS, MICrONS, Janelia, Princeton, Harvard, Google — and to the only jurisdictions where assisted-death-compatible preservation protocols are legally conceivable. It is also where funding volatility poses the largest programme risk.
- Europe. EBRAINS and the Open Brain Institute inherited the simulation infrastructure of HBP and Blue Brain, giving Europe a distinctive position in modelling and open platforms rather than in raw imaging scale. Tomorrow Bio provides the region's integrated preservation operation.
- Japan. The strengths are primate (marmoset) brain mapping and work on consciousness and theory. Brain/MINDS 2.0 (AMED) is building a cross-species digital brain platform14. Masataka Watanabe at the University of Tokyo proposes a distinct route — connecting a living brain to a machine hemisphere and migrating consciousness and memory gradually — with the startup MinD in a Device pursuing related work15. The Whole Brain Architecture Initiative serves as a Japanese-language entry point to the computational theory of the brain16. There is effectively no domestic preservation provider, so that option means an overseas contract plus international transport, and the resulting delay directly degrades preservation quality.
- Anywhere. Because FlyWire, MICrONS, H01 and ZAPBench are all open, analysis and contribution are not gated by geography. Accurate translation and explanation in under-served languages is itself a contribution.
6.7 Do NOT
What not to do.
1. Do not pay any current service claiming to upload consciousness. As of 2026 no provider can scan or upload a personality. Chatbot-style "digital clones" replay records; they are not a transfer of the person.
2. Do not let hopes about uploading accelerate irreversible medical or end-of-life decisions. Preservation guarantees structural retention only and remains an unproven bet. Nothing in current science justifies letting "sooner is better" distort decisions about the timing of death — which is precisely what makes ethical review of assisted-death-compatible protocols contentious4.
3. Do not spread confident dates. Neither "arriving in 2045" nor "impossible forever" has documentary support. Speak in distributions (Chapter 4).
4. Do not run experiments on systems that might have subjectivity without a validation and ethics framework. Welfare and stopping criteria for animal emulations should be designed before the experiment. Metzinger's moratorium argument7 is strong, but the precautionary principle behind it is increasingly shared.
5. Do not treat brain data casually. Connectomes and neural recordings are the ultimate personal information. Confirm the protection framework (neurorights) before letting them onto a default path toward sharing or commercialisation.
- The field's rate limiters are five: proofreading automation, structure-to-dynamics inference, validation standards, preservation validation, and ethics infrastructure. From any position, the highest-value action is one that connects to one of these.
- Because nearly all the data is open, students and individuals can start today (FlyWire, ZAPBench, OpenWorm).
- For an individual the realistic order is understand → track → participate, with any preservation contract treated as optional insurance taken out in full knowledge of the scientific limits.
References
Chapter 6 references (16).
- Zanichelli, N., et al. (2025). State of Brain Emulation Report 2025. arXiv:2510.15745.
- Wang, E. Y., et al. (2025). Foundation model of neural activity. Nature, 640.
- Google Research (2025). ZAPBench.
- Nectome Research (2026). Assisted-death-compatible whole-brain preservation protocol (preprint).
- Brain Preservation Foundation. Technology prizes and third-party evaluation.
- Sandberg, A. (2014). Ethics of brain emulations. J. Exp. Theor. Artif. Intell., 26.
- Metzinger, T. (2021). Artificial suffering. J. Artif. Intell. Consci., 8.
- Sandberg, A., & Bostrom, N. (2008). Whole Brain Emulation: A Roadmap. FHI.
- Neuromatch Academy. Open computational neuroscience education.
- FlyWire. Open fly whole-brain connectome data and citizen science.
- OpenWorm. Open-source nematode simulation.
- Carboncopies Foundation. WBE education and workshops.
- The Transmitter (2025–26). BRAIN Initiative budget volatility.
- Brain/MINDS 2.0 (AMED, 2024–).
- NeurotechJP. Interview with Masataka Watanabe, and MinD in a Device.
- Whole Brain Architecture Initiative (Japan).