Latest News
- 12th Jun 2013
- Integrated E-prime / The Observer project available
- 5th Dec 2012
- EthoVision 9.0 released
- 13th Nov 2012
- EEG-eyetracker integration with Emotiv Toolkit
iView X eyetracking
Overview
Eyetracking is becoming an increasingly vital tool in behavioural research. iView X offers the solution to any eyetracking study. Select from a range of individual and combined systems for remote (non-contact), high-speed or mobile tracking. iView X is also available for use in fMRI and MEG.
The system is built around Experiment Suite 360 - a simple interface that allows you to design your study, collect your data and analyse it quickly and easily. The system produces heat and attention maps and detailed statistics whether your stimulus is a series of still images, webpages or video.
iView X can also be used with your own stimulus presentation software such as E-prime or Presentation. It is also full compatible with iMotions Emotion Tool.
How does it work?
An image of the participant's eye is obtained from a camera and processed by the iView X software. The camera can be head-mounted, desk-mounted, a high-speed camera mounted in a chin-rest or even an fMRI or MEG compatible camera, depending on your application.
iView X finds the darkest part of the eye image (the pupil) and the brightest part of the eye image (the corneal reflex) and measures the position of the centre of the pupil with respect to the corneal reflex.
By calibrating the system to a number of points of known locations, iView X can then translate these measurements into x, y coordinates of a 2D stimulus, such as a picture on a computer screen (remote, hi-speed, or fMRI interfaces) or x, y coordinates of a video of the participant's environment (head-mounted interface).
Gaze coordinates are recorded in a time-stamped datafile while a gaze cursor can be overlaid onto a real-time video record of the 2D stimulus or participant's environment.
Integrated analysis software automatically detects 'fixations' (when the eyes are relatively still), 'saccades' (when the eyes are moving) and 'blinks' on the basis of the x, y gaze coordinates and pupil size. Static, 2D areas of interest can be defined, and the amount of time spent looking in these areas can be calculated automatically. Dynamic areas of interest can be defined in The Observer XT 11 and gaze directed towards these areas can be coded and analysed from the gaze-cursor overlay video.
Features and Benefits
| Feature | Benefit |
|---|---|
Highly advanced video-based tracking with the best resolution and accuracy available (< 0.5°) | Precise, error-free data |
Measures corneal reflection as well as the pupil. | No time lost recalibrating as a result of head-movement. |
A flexible and intuitive system that allows the user to switch between camera interfaces for different applications. | One system can serve the needs of a number of users with no retraining. |
Simple, user-friendly interface. | Reduces set-up time and effort. |
Integrated analysis software (BeGaze) for automated analysis of fixations/saccades and areas of interest. | Produce meaningful data quickly. |
Real-time video with gaze position overlay can be analysed with The Observer XT 11. | Understand where the subject is looking in a dynamic environment. |
Easily integrated with standard stimulus software packages, e.g. E-prime, NBS Presentation, Superlab with on-line data streaming via ethernet. | Saves valuable experiment set-up time. |