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Open Neuro Interface: formal specifications for high-bandwidth, bidirectional communication with neural probes

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NOTE: This repository has been moved to https://github.com/open-ephys/ONI. This repo has been archived.

Open Neuro Interface Specification [WIP]

When creating neural acquisition tools, we have found that proper headstage serialization and host to PC communication are some of the trickiest parts of the development process. Therefore developers often resort to brittle solutions that meet their needs but are hard to inter-operate (e.g. NI DAQs). Alternatively, they may turn to ready-made options with poor performance (e.g. multiple Arduinos or Opal Kelly development boards). Therefore, these interfaces become the limiting hardware for both terms of integration (e.g. using disparate hardware in the same rig) as well as closed-loop performance (e.g. loop delay).

To address this, we have created the Open Neuro Interface (ONI) which is a set of general purpose communication protocols, device driver specifications, and programming interfaces to support arbitrary mixtures of hardware. These designs are formally described by the ONI Specificaiton, which was developed with lots of community input.

The hope is that this acquisition system will get the boring part out of the way: it serves as a high performance, open-source platform upon which new brain interfacing technologies can by built. We also hope that the use of a common protocols will allow easy integration of disparate hardware to develop rich feedback control loops for neuroscience projects. If you are interested in developing against this specification (e.g. for your miniscope, headstage, position tracker, 2P microscope, etc), we would love to hear from you and talk about the best way to proceed.

Contents

The ONI Specificaiton formally defines the requirements of the following components:

  1. Headstage to host serialization protocol specification [WIP]
  2. Host to PC communication protocol specification
  3. Host device driver specification [WIP]
  4. Host programming interface specification

Each can be found as a separate section in the specification itself.

Contributing

oni-spec-wip.txt is the unstable work in progress for the next ONI revision. Please make changes and PRs to this document only.

ONIX Implementations

Using the ONI specificaiton, Open Ephys has created ONIX. Have a look at the ONIX Documentation for more information.

Feedback

We know we did not do a perfect job with this specification. Please tell us why in the issues! This will help ONI be more generally useful for making powerful tools.

License

MIT

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