What is Aoi eye tracking?

3. Areas of Interest (AOI) An Area of Interest, also referred to as an AOI, is a tool to select regions of a displayed stimulus, and to extract metrics specifically for those regions. While not strictly a metric by itself, it defines the area by which other metrics are calculated.

What type of data does eye tracking give you?

Eye-tracking technology helps observe and measure eye movements, pupil dilation, point of gaze, and blinking to see where subjects of a study focus their visual attention, what they engage with, and what they ignore.

How does an eye tracker work?

The eye tracker sends out near infrared light. The light is reflected in your eyes. Those reflections are picked up by the eye tracker’s cameras. Through filtering and calculations, the eye tracker knows where you are looking.

What is fixation in ophthalmology?

Fixations are those times when our eyes essentially stop scanning about the scene, holding the central foveal vision in place so that the visual system can take in detailed information about what is being looked at.

What is fixation duration?

Fixation duration is the average time for fixations. Fixation duration typically ranges from 150 to 300 msec. Fixation duration, similar to number of fixations and dwell time, represents the relative engagement with the object. The greater the average fixation duration, the greater the level of engagement.

What is visual tracking and why it is important?

Eye tracking, also referred to as visual tracking, is the ability of one’s eyes to “track” from left to right in an efficient manner, and “follow” the movement of objects. Eye movements should be smooth and consistent, with the ability to be completed quickly.

What do you need for eye tracking?

An infrared light source (and thus detection method) is necessary as the accuracy of gaze direction measurement is dependent on a clear demarcation (and detection) of the pupil as well as the detection of corneal reflection.

What is tracking data and what does it tell us?

The term “data tracking” describes the hardware and software, which when used together allows you to know where something is at any point in time.

What is eye tracking and how does it work?

Eye tracking involves measuring either where the eye is focused or the motion of the eye as an individual views a web page. When your site visitors are connected to eye tracking software, you will be able to tell: Where they are looking. How long they are looking.

What are the steps involved in developing an eye-tracker?

1. Evaluating or acquiring a commercial eye-tracker, 2. Planning an experiment where eye tracking is used as a tool, 3. About to record eye movement data, 4. Planning how to process and interpret the recorded data, before carrying out statistical tests on 5.

How do eye-trackers measure eye-in-head angles?

Eye-trackers necessarily measure the rotation of the eye with respect to some frame of reference. This is usually tied to the measuring system. Thus, if the measuring system is head-mounted, as with EOG or a video-based system mounted to a helmet, then eye-in-head angles are measured.

Is covert attention common during eye-tracking recordings?

If covert attention is common during eye-tracking recordings, the resulting scan-path and fixation patterns would often show not where our attention has been, but only where the eye has been looking, failing to indicate cognitive processing.