16-channel biosignal amplifier
One of the most widely used biosignal amplifiers in BCI research. Simultaneous 24-bit recording from the brain, eyes, heart and muscles; real-time processing, an open software ecosystem and simultaneous recording with TMS, tDCS and fNIRS: for neurofeedback, closed-loop neuroscience and neuroprosthetics research.
g.USBamp Research is one of the most widely used biosignal amplifiers in brain-computer interface research, and is used in neurofeedback, closed-loop neuroscience and neuroprosthetic applications too. With its low-noise architecture and real-time signal processing, several amplifiers can be synchronised; researchers develop their own algorithms with g.HIsys, g.Pype, Python, MATLAB and Simulink.
With g.Pype, g.HIsys, g.Recorder, g.BSanalyze and g.tec Suite 2024, researchers build brain-computer interfaces and record and analyse their data. g.USBamp Research works with MNE-Python, FieldTrip, EEGLAB, BCI2000, OpenViBE and Lab Streaming Layer (LSL), and synchronises with fNIRS, TMS, eye-tracking, motion-capture and physiological monitoring systems. Development in Python, MATLAB, Simulink, C, C# and .NET is supported.
The DC-coupled architecture combines a ±250 mV input range with a resolution of 85.7 nV, so large electrode offsets do not saturate the amplifier. That makes it suited to EEG-TMS, EEG-tDCS, slow cortical potentials, evoked potentials and peripheral nerve recordings.
Every input channel has its own 24-bit analogue-to-digital converter running at 2.4576 MHz; hardware oversampling combined with floating-point digital signal processing raises the signal-to-noise ratio, to under 0.4 µV RMS of noise between 1 and 30 Hz. An integrated signal generator (sine, square, sawtooth, white noise), automatic calibration and impedance checking, with continuous offset and gain compensation, validate the system before an experiment.
A single device offers 16 monopolar or 8 bipolar channels (selected in software). Several g.USBamp Research units are synchronised into larger acquisition systems that keep simultaneous sampling and consistent timing, and can be split back into independent systems when needed.
ECoG recordings can be made with Ad-Tech, PMT, Unique Medical and Cortec grid electrodes: a complete set-up for brain mapping procedures and neuromonitoring applications.
At Cybathlon 2016 the gold-medal team Brain Tweakers/CNBI-EPFL, with pilot Numa Poujouly from EPFL, posted the two fastest times on g.USBamp Research: 90 and 125 seconds (the next best was 135 seconds). The pilot controlled an avatar in the BrainRunners game with brain activity alone. A benchmarking study published in Frontiers in Neuroscience looked at 11 international BCI teams racing live with tetraplegic pilots, and reported that no amplifier gave a systematic edge overall: performance came down to pilot training.
In a study with 100 unselected participants, g.USBamp was used with 8 channels, 24 bits and 256 Hz sampling and a real-time, Simulink-based LDA classifier; calibration took 5 minutes. With the row/column paradigm, 72.8% of participants spelled with 100% accuracy.
A ±250 mV DC-coupled input range, a dedicated 24-bit ADC for every channel and integrated digital signal processing make g.USBamp Research well suited to EEG-TMS experiments; TMS artefacts are removed with g.BSanalyze.
g.USBamp Research records in sync with fNIRS systems: EEG's millisecond temporal resolution joins fNIRS's measure of cerebral oxygenation. For cognitive neuroscience, BCI, neurovascular coupling, functional brain mapping and rehabilitation research.
With Lab Streaming Layer and g.tec software, EEG is recorded on one timeline with eye-tracking, motion-capture and physiological monitoring systems.
Talk to our team about device selection, protocol design, installation and software integration. We will work out the technical configuration that best fits your research or clinical goal.
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