DSI-7

New Features

The DSI-7 * is a research grade wireless EEG headset designed for ultra-rapid application of 7 sensors at locations corresponding to the 10-20 International System. Its main features include:

  • Self-donned and ready to record EEG in under 1 minutes
  • Comfortable for wearing continuously over 8 hours
  • Portable design suitable for light ambulation in office or lab environment
  • 7 sensors positioned at choice of F3, F4, C3, C4, Pz, P3, P4 locations of the 10-20 International System
  • Linked-Ears earclip mounted active sensors
  • Continuous impedance monitoring
  • BlueTooth wireless transmission with sampling at 300Hz
  • Rechargeable Li-ion batteries allow continuous operation
  • 4-bit digital trigger input
  • Adjustable to fit a wide range of headsizes
  • CUSTOMIZABLE SENSOR LOCATIONS (contact us for custom requests)

* The DSI-7 replaces the DSI-6 prototype system (most information about DSI-6 and tutorial videos are applicable to DSI-7)


Applications

The DSI-7's practicality, portability, and high signal quality opens the door to taking numerous applications that require rapid and non-intrusive EEG recording. Such applications include:

  • Neurofeedback
  • NeuroErgonomics
  • NeuroEconomomics / NeuroMarketing
  • NeuroEducation
  • Augmented Cognition
  • Brain Computer Interfaces
  • Biometrics
  • Cognitive Stress or Workload Monitoring
  • Psychological Research
  • Sports Peak Performance Training

DSI-7 Specification

Features and Specifications

Specifications

DSI-7
Sensor Locations Seven (7) sensors at fixed locations of theInternational 10/20 System locations:
F3, F4, Cz, C3, C4, Pz, P3, P4 + Linked Ears

Common-Mode-Follower

One (1) Common Mode Follower Sensor at Pz is default reference (can be changed to LE in software)
Ground One (1) ground electrode at the last remaining location
Headset

Easy to don, comfortable, and long-term wearable headset assembly with spring-loaded arms and pods for sensor support.
Good for easy rapid use in office or laboratory environment.

Amplifier/Digitizer

One (1) 7-channel amplifier and digitizer
Wireless BlueTooth
Run-time >12 hours
Headsize fit 52-62cm circumference
Headset weight ~350g
Wireless range: 10m
Digital Inputs: 4 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: > 120dB
Channel Cross-talk: < -70dB with sensors
Input Impedance (1Hz): 47Gohm
Input bias current: <25pA
DC offset tolerance: +/-200mV
Maximum input range: 10mV pk-pk
Noise (1-50Hz): <3 uV pk-pk

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

DSI-7 Software

DSI-Streamer

DSI-Streamer is Wearable Sensing's easy-to-use data acquisition software. The software features include:

  • Control of DSI headset functions
  • Real-time diplay and replay of data
  • Tabbed navigation of controls
  • Integrated diagnostic tab with graphical color representation of electrode impedance
  • User selectable filters
  • Record raw and/or filtered data
  • Exporting to standard EDF and comma-separated value (.csv) formats that can be readily imported to 3rd party applications
  • Editable montages, color scheme and display parameters (window size, scaling, etc.)
  • Event Related Potentials (ERP) view (in beta)
  • TCP/IP socket for real-time streaming to external applications (in beta)

* included at no additional charge with DSI systems

 


QStates

QStates is a quantitative EEG (qEEG) based cognitive state classificatin software that uses spectral features

  • Rapid and efficient Partial-Least-Squares (PLS) based learning algorithm
  • Train to classify cognitive states based on as little as two one-minute recordings (high and low states)
  • Produces linear interpolation or probability density function output of state (0-100 value) every 2 seconds
  • Models can be trained to classify any cognitive state for which there is a qEEG signature (eg. workload, emotions, ...)
  • Validated perfomance of >90% accuracy for mental workload, engagement and fatigue
  • Classifies up to 3 models simultaneously
  • Real-time processing of data streamed via TCP/IP socket
  • Off-line data analysis with graphical display of results
  • Automated summary tables generation
  • Monitor data quality and rejects bad epochs
  • Data saved in comma-separated value (.csv) format

*Sold separately


Application Programming Interface (API)

Wearable Sensing is currently developing an Application Programming Interface to allow developers to directly communicate with DSI systems via a Component Object Model (COM) interface that is implemented as a .dll library for Windows OS.

  • (Coming soon)

DSI-7 Video Tutorials

Donning DSI-7

This video tutorial shows the process of putting on a DSI-7* and getting sensors through hair.



* The DSI-7 replaces the DSI-6 prototype system (most information about DSI-6 and tutorial videos are applicable to DSI-7)

DSI: Set-Up

This video shows how to set-up Wearable Sensing's Dry Sensor Interface (DSI) systems and getting sensors through hair prior to starting the recording of data.


Acquiring EEG with DSI-7

This video tutorial shows the process of acquiring EEG signal using DSI-Streamer, and saving data to .csv and .edf format.

(COMING SOON)


Doffing DSI-7

This video tutorial shows the process of removing, cleaning and maintaining a DSI-7*.



* The DSI-7 replaces the DSI-6 prototype system (most information about DSI-6 and tutorial videos are applicable to DSI-7)