DSI 7 Flex

Dry Electrode EEG Headset

DSI 7 Flex

The DSI-7-Flex is a research-grade wireless dry electrode EEG system designed for versatile application of up to 7 sensors at any location. The DSI-7-Flex offers flexibility, portability, and high signal quality, opening the door to numerous applications that benefit from fast, user-friendly EEG recording.

Features and Benefits

  • Integrated electronics module with amplifiers, digitizers, transmitter and power supply
  • Can be configured to record EEG from up to 7 sensors + Linked Ears ear clip sensors (not shown in picture)
  • Versatile sensor placement for exploratory investigations
  • Double spring-loaded pods for mechanical stability and comfort
  • Continuous impedance monitoring
  • Bluetooth wireless transmission with sampling at 300 Hz
  • Rechargeable Li-ion batteries allow continuous operation
  • 4-bit digital trigger input
  • Can be used with BraiNet or other harness systems
  • Various optional electrode tip configurations: pinned, flat, single or double spring-loaded pods



The DSI-7-Flex is a turnkey system whose user-configurable sensor locations allow exploration of applications requiring high signal quality dry electrodes. While this system is not intended for ambulatory use, it is designed to enable laboratory research into EEG applications that include:

  • Neuroscience and Neuropsychological Research
  • Brain-Computer Interfaces
  • Neurofeedback
  • Neuroergonomics
  • Neuroeconomics / Neuromarketing
  • Augmented Cognition
  • Biometrics
  • Cognitive Stress or Workload Monitoring
  • Sports Peak Performance Training
Sensor Locations 7 sensors; Can be placed at flexible locations
Common-Mode-Follower 1 Common-mode follower reference sensor
Ground 1 Ground Electrode
Amplifier/Digitizer 1 7-channel wireless amplifier and digitizer
Analog/Digital Resolution 0.317 uV referred to input
Analog/Digital Converter 16 bits
Sample 300 Hz
Bandwidth 0.003-150 Hz
Gain 60
Common Mode Rejection Ratio >120 dB
Channel Cross-Talk < -70 dB with sensors
Input Impedance (1Hz) 47 Gohm
Input Bias Current <25 pA
DC Offset Tolerance +/-200 mV
Maximum Input Range 10mV pk-pk
Noise (1-50Hz) <3 uV peak-peak
Digital Inputs 4-bit input
Run-time >12 hours
Wireless Bluetooth
Wireless Range 10 m
Headset weight ~200 g
Headsize Fit 52-62 cm circumference
Headset Can be used with BraiNet or other harness systems
Notice * Specifications subject to change, please contact us to obtain latest specifications