The DSI-24 is a research-grade wireless dry electrode EEG headset designed for rapid application of 21 sensors at locations corresponding to the 10-20 International System. Its main features include:

  • Self-donned and ready to record EEG in under 5 minutes
  • Comfortable for wearing continuously over 8 hours
  • Portable design suitable for light ambulation in office or lab environment
  • 21 sensors positioned according to the 10-20 International System
  • Continuous impedance monitoring
  • Bluetooth wireless transmission with sampling at 300 Hz
  • Hot-swappable Li-ion batteries allow continuous operation
  • 8-bit digital trigger input
  • Adjustable to fit a wide range of head sizes (54-62 cm in circumference)


The DSI-24's practicality, portability, and high signal quality opens the door to taking numerous applications that were previously limited to lab environments to more naturalistic settings. Such applications include:

  • Neurofeedback
  • Neuroergonomics
  • Neuroeconomics / Neuromarketing
  • Augmented Cognition
  • Brain-Computer Interfaces
  • Biometrics
  • Cognitive Stress or Workload Monitoring
  • Psychological Research
  • Sports Peak Performance Training

Child-Sized Version: DSI-24-C

The DSI-24's practicality, robustness to motion artifacts, high signal quality, and unsurpassed comfort beckoned for a version suitable for children.

And, thus, by popular demand, we have developed a smaller version of our DSI-24: The DSI-24-C, which is designed to comfortably and accurately position the dry sensors on heads 48-54 cms in circumference, thus fitting >90% of male children 3-7 years of age, and >90% of females 4-9 years old. (The DSI-24 optimally fits 54-62 cm)

This unit is thus an excellent complement to a DSI-24, or can be purchased separately, as the child-sized version is a stand-alone unit, and includes its own integrated amplifiers, digitizers, and 19 sensors on the head at the International 10/20 System locations, as well as 2 removable earclips and 1 auxiliary input for ECG/EMG/EOG.

So please ask us about our special bundle pricing.


DSI-24 Specifications

Features and Specifications


Sensor Locations Twenty (20) sensors at International 10/20 System locations:
Fp1, Fp2, Fz, F3, F4, F7, F8, Cz, C3, C4, T3, T4, T5, T6, P3, P4, O1, O2, A1 and A2


One (1) Common Mode Follower Sensor at Pz
Ground One (1) ground electrode at Fpz

Easy to don, comfortable, and wearable long-term. The headset is assembled with spring-loaded arms and pods for sensor support.
Good for long-term ambulatory use in office or laboratory environments.


One (1) 24-channel amplifier and digitizer
Wireless Bluetooth
Run-time >Continuous (hot-swappable batteries)
Headsize fit 52-62 cm circumference (54-62 cm is optimal)
Headset weight ~600g
Wireless range: 10 m
Digital Inputs: 8 bit input
Analog/Digital Converter: 16 bits
Analog/Digital resolution: 0.317 uV referred to input
Sample Rate: 300 Hz
Bandwidth: 0.003-150Hz
Gain: 60
Common mode rejection ratio: > 120 dB
Channel cross-talk: < -70 dB with sensors
Input impedance (1 Hz): 47 Gohm
Input bias current: <25 pA
DC offset tolerance: +/-200 mV
Maximum input range: 10 mV pk-pk
Noise (1-50 Hz): <3 uV pk-pk

* Specifications subject to change, please contact us to obtain latest specifications