Preclinical Products

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Electrophysiology Simplified


Celeris is rapidly becoming the preferred choice for rodent and small animal electrophysiology!

Its sleek design makes for a high-throughput machine that is simple even for novices.

Exploded Celeris


Light Guide Electrodes

A dual function electrode-stimulator simultaneously delivers light stimulus while recording neural activity.

How does it work?    Our patented design wraps a conductive metal around a ‘light pipe’ that directly touches the eye.

Flash Stimulation

  • stimulator
    • RGB color with optional UV
    • Sizes made for different animals
    • Luminance ranges dim to bright

    Download a Brochure

Pattern Stimulation

Celeris Accessories

Nose Cone

  • isofluorane molecule

    Isoflurane gas may be used as an alternative to the standard injectable anesthetics. Diagnosys offers tubing shaped to fit with the Celeris.

Rabbit Kit

  • rabbit

    Celeris can accommodate larger animals, like rabbits, with a table extension and specialty stimulators used in conjunction with jet electrodes.

espion logo


All systems run on our powerful Espion software. Enjoy limitless customization – or simply utilize our standard test package. Bulk export software package available upon request.

Click here for more on software

eXporter logo


Bulk export software package is available for users looking to export multiple test files and convert them to .TXT files.

Click here for more on exporter software

Additional Research Systems

Fill out the form below to discuss which configuration would work best for your research.

E3 Combinations

Combine any Diagnosys flash or pattern stimulator with any electrode to test any animal.


Lab Cradle

ColorDome stimulator using traditional gold electrodes or your custom electrodes, on species from zebrafish to rodents.

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Lab Cradle


  • I have used Diagnosys electrophysiology systems for clinical testing and research for nearly fifteen years. The systems are reliable, easy to use and protocols readily modified to answer research questions. The few times I have had problems with the equipment, Diagnosys has quickly responded and fixed the problem.

    Ron Hansen

  • Diagnosys LLC not only provides high quality testing equipment, but also provides excellent customer support services. All employees are knowledgeable in the field of visual electrophysiology and are able to help with any questions or issues you may have.

    Julie Racine

  • As a clinical neurophysiologist in a busy pediatric clinic, I wholeheartedly believe that the equipment made available to us by Diagnosys LLC allows for the testing necessary to aid in clinical diagnostics and research. I have always felt that this family run company has been by my side each and every step of the way, despite being located in another country.

    Dr. Allison Dorfman

  • Celeris is the Luxury Vehicle of Electrophysiology! I love Celeris for the vision science field because it grants all investigators access to a wide variety of electrophysiological tests without requiring in depth expertise of the theory of electrophysiology. It's wonderfully simple and easy to operate.

    Barbara A. Mysona