THERA PRAX® Q-EEG - Bio- and Neurofeedback System


The THERA PRAX® Q-EEG with 22 channels is another member of our successful family of products for direct current EEG feedback / neurofeedback and biofeedback. It combines the convenience of a complete, ready-to-use system and the safety of a medical device.

During biofeedback - a treatment method, based on operant conditioning - the patients receive feedback about their physiological states and changes in these states, which mostly cannot be perceived by the patient. Neurofeedback is a kind of biofeedback and therefore a method in instrument-based behavioral therapy. It allows the patients to perceive and self-regulate their brain activity.

The THERA PRAX® Q-EEG is used in children with impaired self-regulating ability of the brain. The impairment may be manifested at neurological and/or behavioral levels such as ADHD.

In addition, it is possible to reliably record multichannel EEG, ECG and EMG signals as well as peripherical bio-signals to describe psychophysiological correlations during relaxation or a stressful situation. To individually control the progress of therapy, cognitive evoked potentials can be recorded.

Benefits of the THERA PRAX® Q-EEG

  • Complete system consisting of a 22-channel full-band DC-EEG amplifier, a PC with integrated 15" TFT colour display, software for neurofeedback and analysis, keyboard, mouse
  • Standardized, clinically evaluated protocols for DC-EEG feedback of the slow cortical potentials (SCP) with automatic online correction of eye and muscle movement artefacts
  • Frequency feedback (Delta, Theta, Alpha, Beta, SMR, Gamma and any desired band) and frequency ratios (e.g. beta/theta)
  • Free choice of frequency band, algorithm and combinations of the two (ration, correlation, coherence, bicoherence etc.)
  • Free choice of feedback channel (unipolar, bipolar, source, multi-channel)
  • Recording of a quantitative EEG in combination with peripheric signals
  • Analysis of single session and comparison of multiple sessions
  • Audiovisual feedback and animation
  • Biofeedback for heart rate, EMG, ECG (optional: for breathing, temperature, GSR, pulse curve)
  • Large number of optional software modules, such as cognitive evoked potentials (CNV, P300, readiness potential etc.)
  • Optional secondary monitor for the patient and equipment trolley


Product information for download


Product brochure



English (Australia)



EU declaration of conformity

all THERA PRAX® devices


Neurofeedback information for download

Neurofeedback brochure

Neurofeedback brochure






frequencies in the EEG


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