Ergoneers Dikablis Glasses 3 Eye Tracker*

Eye tracking and much more

Dikablis Glasses offer high-precision gaze tracking, pupil dilation measures, and precise head position tracking. The system is light, ergonomic, fits over glasses and has front-mounted and individual eye cameras. When used with D-Lab software, several measures are readily available, including cognitive load. Various sensors can be connected to the D-Lab software and analyzed collectively.

The following components are included in the delivery: Dikablis Glasses 3, four exchangeable nose pieces, standard or wide-angle lens, eBox, two batteries with charger, bag, USB and HDMI cables and power supply.

Highlights

  • Light-weight ergonomic non-slip design
  • High-precision gaze tracking even with variable lighting and subject/environment movement
  • The system can easily be worn in combination with glasses
  • The eye and field cameras can be adjusted individually
  • Allows live-streaming of eye-tracking data
  • Fully integrated into D-Lab data acquisition and analysis platform
  • Simple and intuitive user interface

Variants

  • The cable version enables direct connection from the system to the computer.
  • The wireless version stores the data on a small transmission device and then transmits them to the computer via WLAN in real time. The experiment can be observed live.

Mobility Options

  • Eye Tracking at night

    For nighttime and low-light studies precise head tracking is possible using infrared markers.

  • Eye Tracking over glasses

    Dikablis Glasses 3 work over all different kind of glasses.

  • Lightweight and unobtrusive design for naturalistic measurements

    The lightweight material and ergonomic design ensures subject comfort.

Specifications

FRAME
Weight (complete device)52 g
MaterialPolyamid
Frame dimensions (width x depth x height)164.5 x 198.0 x 58.0 mm
Adjusting range field-cam16° up and 30° down
Adjusting range eye-camsdual pivot adjustment for more flexibility and/or if subject wears glasses
Designdesigned to work over any kind of glasses
FIELD CAM
ResolutionFULL HD 1920 (H) x 1080 (V) @ 30 fps
Lens parameterM9x0,5; IR Corating: T=50%@640±8nm
FOV: Horizontal 116°; Vertical 60°; Diagonal 144,5°
EYE CAM
Number of effective pixels648 x 488 (EIA & CCIR)
Image Transfer Rate60 field/sec
IR Frequency875 nm
IR intensity17 mW/sr
ACCESSORY
Nose pad 1 -4Silicon Pad, system 3, One-piece pad, entirely made of non-allergenic silicone Material-Holder: PA12 (PA 2200); biocompatible according to EN ISO 10993-1 and USP/level VI/121 °C

References

  • Brochure

    • neuroConn product portfolio for NIBS-EEG

  • Poster

    • Closed-loop application and artefact correction for tACS-EEG

  • Poster

    • Closed-loop apparatus for brain state-dependent tES: a proof of principle based on SMR

  • Poster

    • Overview of hardware artefacts during simultaneous tES and EEG

  • Poster

    • A Method for Online Correction of Artifacts in EEG signals during Transcranial Electrical Stimulation

Interpreting the Results

The first screen of the report shows the visit notes that were entered prior to the test. The second screen shows the patient identifier, the date of the test and a summary of the test results, which are described further below.

The third screen of the report shows a plot of the patient’s Eyes-Open and Eyes-Closed phybrata power aligned to their age, against the backdrop of a graph of the average power of healthy individuals across a range of ages. This chart allows the patient and their caregiver to see how the results from the current test relate to the average of healthy people the same age.

Three phybrata measures are derived from the raw sensor data:

  • Phybrata Power
  • Eyes-Closed/Eyes-Open Phybrata Power Ratio (EC/EO Ratio)
  • Left/Right Phybrata Power Ratio (L/R Asymmetry)

The Phybrata Power and L/R Asymmetry are present for both the Eyes-Open and Eyes-Closed tests. Each measure is compared to a normative threshold (0.5 for Eyes-Open, 0.6 for Eyes-Closed), above which the patient’s result is flagged for further assessment. For quick identification, results below the threshold appear in green and results above the threshold appear in red.

The Phybrata Power represents the aggregate power (in Watts) of the movement of the body measured at the head. A higher than threshold Phybrata Power indicates a potential neurological impairment that should be investigated further.

The Left/Right Ratio measures any asymmetry present in the patient’s phybrata measurement. An asymmetry of zero indicates that the patient is centered. An asymmetry less than or above zero indicates that the patient leans preferentially to either the left or right side, respectively. Favoring one side beyond the normative threshold (+/- 0.5) indicates a potential orthopedic impairment that should be investigated further.

  • PValues < -0.5 indicate a lean to the left beyond the normative threshold, indicative of a potential right leg injury.
  • Values > 0.5 indicate a lean to the right beyond the normative threshold, indicative of a potential left side injury.

The Eyes-Closed/Eyes-Open Ratio quantifies vestibular performance. An EC/EO Ratio above the normative threshold (2.0) means the Phybrata Power is much higher with the eyes closed, indicating a potential vestibular impairment that should be investigated further.

Sample of good phybrata data

Sample of bad phybrata data

Publications

COMPATIBLE SYSTEMS

EEG

Items marked with* are investigational devices and for research use only. CAUTION - Investigational Device. Limited by Federal (or United States) law to investigational use.