The Mind Mirror Hardware

The research-grade Vilistus digital sampling unit (DSU)
Digital Sampling Unit

The research-grade Vilistus digital sampling unit (DSU) transfers data at the standard EEG rate of 256 samples per second.


Small and easily transported, this research-grade neurofeedback/biofeedback device operates on USB connectivity. It features four data ports used for EEG and/or physiology meters.  


EEG with Integrated Physiology Meters

The Vilistus Mind Mirror features a dual-channel EEG sensor that reliably measures 0.5-100 hertz and uses only one of the four ports in the DSU. The EEG sensor is integrated for recording and advanced data analysis with two physiology meters: Galvanic Skin Response and Blood Volume Pulse. Professionals and self-trainers use these sensors to master brainwave states and regulate the body. Used together, these sensors enable the mind explorer to make new discoveries about the mind-body correlates of consciousness. 


The Mind Mirror - The Galvanic Skin Response (GSR) meter
The GSR Meter

The Galvanic Skin Response (GSR) sensor has been calibrated to the values of the highly sensitive Electrical Skin Response (ESR) meter used by Max Cade to measure physical arousal/relaxation.


Small electrodes are taped to two fingertips to measure relative changes in either skin conductance (uSiemens) or skin resistance (Ohms) values.


The GSR's 0-6 Lesh scale provides absolute arousal and relaxation values. Correlated by Cade to EEG production, Lesh scale readings allow the meditator to use GSR only and extrapolate brainwave states of consciousness.


The Mind Mirror - The Blood Volume Pulse (BVP) meter
The BVP Meter

The Blood Volume Pulse (BVP) sensor is a light-sensitive electrode that is clipped to the end of the ear or  little finger. The BVP sensor tracks heart/pulse rate changes in real-time.


Post-session summary view windows show pulse rate, heart rate variability, and stress index over the course of the session or in markered segment as a means of measuring the extent of inner peace, calm, and health.


Used individually or together, the GSR and BVP enable users to gain insights into the dynamics of consciousness and regulate the body as well as the mind.


Manual Trigger Button

The Mind Mirror - Manual Trigger Button
Manual Trigger Button

The optional Manual Trigger Button is placed in the lap. It is then pressed to set event markers in the recording without creating movement artifact and beta-wave activity.


Markers are used in post-session summary view windows to match subjective experiences with the objective data. 


Additional Meters

  • sEMG sensor for direct application on muscles to monitor and training down localized tension.
  • Temperature sensor for monitoring skin temperature. This is taped to the finger to measure the body's movement toward meditation (warming) or sleep (cooling).
  • Mind Slice is a USB-powered device that sits anywhere in the room and lights up with variable colors to provide direct visual EEG feedback while not in meditation. It helps users externalize the Awakened Mind and other patterns to waking awareness.

"...Once the student becomes aware of what's going on inside his body, which is what the machine tells him, he can begin to associate these changes in body functions with subtle changes in his conscious feelings - his subjective awareness... After the student finds he is able to use his own awareness and feelings to tell him his internal functions (which is sensory biofeedback) he no longer needs an external device to feed external signals back to him."