g.tec medical engineering

Builds biosignal amplifiers, electrodes and real-time processing software for EEG and for recordings from the cortical surface, and sells BCI systems built on them: recoveriX for stroke rehabilitation, mindBEAGLE for assessing and communicating with people with disorders of consciousness, and cortiQ, which maps motor, sensory and language areas from ECoG or depth electrodes in minutes, before or during epilepsy and tumour surgery.

Interface category

Electroencephalography · Electrocorticography

Signal

EEG: Summed field potentials, blurred and attenuated by skull and scalpECoG: Local field potentials, including high-gamma activity

Lines of work

recoveriXNon-invasive · EEG · Recording and stimulation · Approved / clearedcortiQInvasive · ECoG · Recording · Approved / cleared

Device

recoveriX — EEG cap with 16 active electrodes, functional electrical stimulation of the affected limb and an on-screen avatar, both triggered when the EEG shows imagined movement

Channels

16 EEG channels

Regulatory status

CE certified medical product, according to the company; not FDA-cleared

Device

cortiQ — Software and an amplifier that read high-gamma activity (60 to 170 Hz) from ECoG grids, strips or depth electrodes placed for surgery, and show which sites respond to a movement, touch or language task

Channels

64, 128 or 256

Regulatory status

FDA 510(k) cleared as cortiQ PRO (January 2020) for evaluating intracranial EEG; CE certified, according to the company

Main use cases

Restore, Communicate, Monitor

Shown in people

A stroke-rehabilitation system that is CE certified according to the company, and a completed 30-participant gait study. Its ECoG mapping system is FDA cleared; in a three-patient study it flagged every hand motor and sensory site that stimulation mapping found. The published evidence is mostly the company's own.

Still an aim

Routine clinical use of rehabilitation triggered by a BCI.

What stands in the way

Independent controlled trials that separate the brain-triggered feedback from ordinary therapy.

On record here: 0 peer-reviewed papers

• 24 Jan 2020US FDA — 510(k) clearance. Statistical evaluation of high-gamma activity in intracranial EEG recorded with the company's amplifier, to be read together with the original waveform. A mapping aid for the surgical team. It is not an implant and not an interface for the patient to use.
• 2019EU (notified body) — CE mark. Marketing in Europe as a medical product. Stated by the company; CE certificates are not published centrally and we have not seen this one.

g.tec is the clearest case of a BCI company that an implant-centred view of the field overlooks. It has sold working BCI systems for a quarter of a century, its amplifiers are widely used in published EEG and ECoG research, and recoveriX is a certified medical product that uses a BCI as therapy: the patient imagines a movement, and stimulation and an avatar respond only when the EEG shows the attempt. That is a narrower claim than restoring communication through an implant, and it is one that already reaches patients. cortiQ takes the same signal processing into the operating theatre: it reads high-gamma activity from electrodes already on the cortex and shows within minutes which sites respond to a task, as a complement to stimulation mapping. It is a use of ECoG decoding that is authorised today, for the surgeon and not as an interface for the patient. Its events (the Spring School, the BR41N.IO hackathons, the BCI Award) also make it one of the field's main meeting points. The published evidence for recoveriX is mostly the company's own research; larger independent trials would settle how much of the benefit is specific to the brain-triggered feedback.

1. 2 Apr 2026

   BrainSTEP, a study of gait rehabilitation after stroke with 30 participants, reaches primary completion.

   Clinical registryClinicalTrials.gov

2. 2 Aug 2021

   A case report from a hospital group describes language mapping with cortiQ during the removal of a glioma in one patient.

   Peer reviewedFrontiers in Neurology

3. 24 Jan 2020

   FDA clears cortiQ PRO through the 510(k) route, for the statistical evaluation of high-gamma activity in intracranial EEG.

   Regulatory sourcecortiQ PRO cleared

4. 2020

   The annual BCI & Neurotechnology Spring School begins.

   Company reportedg.tec medical engineering

5. 2020

   A feasibility study of BCI treatment for upper-limb rehabilitation after stroke is published by the company's researchers.

   Peer reviewedFrontiers in Neuroscience

6. 2019

   Medical approvals for recoveriX and cortiQ; the Unicorn Hybrid Black headset for developers is introduced.

   Company reportedg.tec medical engineering

7. 2017

   Starts the BR41N.IO series of BCI hackathons.

   Company reportedg.tec medical engineering

8. Jun 2015

   Study in three patients with epilepsy sets cortiQ's real-time mapping against electrical stimulation mapping: sensitivity 100% and specificity 80% for hand motor sites. The company's researchers are among the authors.

   Peer reviewedJournal of Clinical Neurophysiology

9. 2007

   Introduces intendiX, a P300 speller for use at home.

   Company reportedg.tec medical engineering

10. 1999

    Founded in Austria by Christoph Guger and Günter Edlinger; presents a motor-imagery BCI system the same year.

    Company reportedg.tec medical engineering

• Christoph Guger

  Co-founder and co-CEO

• Günter Edlinger

  Co-founder and co-CEO

As publicly stated by the organisation. Not a complete list.

• EEGApproved / cleared

  Kandu

  Maker of IpsiHand, a non-invasive BCI for hand rehabilitation after stroke that the FDA authorised for marketing in 2021, years before any implanted system.

• sEMGNon-medical

  BrainCo

  Non-invasive neural interfaces sold as products: bionic limbs and EEG wearables.

• IntracorticalFeasibility

  Blackrock Neurotech

  Maker of the electrode arrays behind most human intracortical BCI research.

• ECoGFirst-in-human

  CorTec

  A fully implanted closed-loop system that both records from and stimulates the cortical surface.