DSI-7-Flex

DSI-7-Flex

Features

The DSI-7-Flex is a research grade wireless EEG system designed for versatile application of up to 7 sensors at any location. Its main features include:

  • Integrated electonics module with amplifiers, digitizers, transmitter and power supply
  • Can be configured to record EEG from up to 7 sensors + Linked Ears earclip 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 300Hz
  • Rechargable 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.



Applications

The DSI-7-Flex's is a turn-key system whose user-configurable sensor locations allow exploration of applications requiring high signal quality dry-sensors. 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
  • NeuroEconomomics / NeuroMarketing
  • Augmented Cognition
  • Biometrics
  • Cognitive Stress or Workload Monitoring
  • Sports Peak Performance Training

 

 

DSI-7-Flex

Features and Specifications

Specifications

DSI-Mini
Sensor Locations Six (6) active dry sensors in individual pods
and one (1) Linked Ear (2 dry active sensor earclips)

Common-Mode-Follower

One (1) Common Mode Follower reference sensor
Ground One (1) ground electrode
Headset BraiNet placement cap allows users to select any location.

Amplifier/Digitizer

One 7-channel amplifier and digitizer
Wireless BlueTooth
Run-time >12 hours
Headsize fit N/A
Headset weight ~200g
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-Flex

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 classification 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-Flex

DSI-7-Flex: Donning

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


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.


Doffing DSI-7-Flex

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

(COMING SOON)



Acquiring EEG with DSI-Streamer

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

(COMING SOON)