The EyeLink II system consists of three miniature cameras mounted on a padded headband. Two eye cameras allow binocular eye tracking or selection of the subject’s dominant eye.
An optical head-tracking camera integrated into the headband allows accurate tracking of the subject’s point of gaze without the need for a bite bar.
|500 Hz binocular eye monitoring|
|0.5º average accuracy|
|Access eye position data with 3.0 msec delay|
|0.01º RMS resolution|
|High quality computer based or scene camera eye tracking|
|Fast and simple participant setup, calibration, and validation|
The core of the EyeLink 1000 eye tracker consists of a custom designed high-speed camera connected to a dedicated Host computer. Running on a real-time operating system, the Host software provides extremely fast eye sample access with incredibly low inter-sample variability, accessed via a set of programming interfaces for multiple operating systems and programming languages
|Sampling Rate||Head Supported: 2000 Hz Monocular / 1000 Hz Binocular
Remote / Head Free: 500 Hz Monocular
|Accuracy||Head Supported: 0.25º -0.5º average accuracy
Remote / Head Free: 0.5º average accuracy
|Real-time Data Access||Head Supported: 1.4 msec (SD < 0.4 msec) @ 2000 Hz
Remote / Head Free: 3 msec (SD < 1.2 msec) @ 500 Hz
|Participant Setup||Very simple and easy. Typically less than 2-5 minutes|
|Resolution||Head Supported: 0.01º RMS, micro-saccade resolution of 0.05º
Remote / Head Free:0.05º RMS, saccade resolution of 0.25
Full specifications: http://www.sr-research.com/pdf/techspec.pdf
The Tobii T60 and T120 Eye Trackers are integrated into a 17" TFT monitor. They are ideal for all forms of eye tracking studies using screen based stimuli.
There is a Tobii setup in the babylab, which is in a fixed lab setup.
There are also two mobile Tobii setups. Please contact Gero Lange for booking requests. Please keep in mind that these mobile setups are booked _without_ a room. If you plan to use these eyetrackers, make sure to also book a room that can be locked. You can use it in a cubicle, as long as you make sure that the eyetracker is stored in a locked room at the end of the day.
|Tobii T60 Eye Tracker||Tobii T120 Eye Tracker1|
|Drift (degrees)||< 0.3||< 0.3|
|Freedom of Head Movement (cm)||44 * 22 * 30||30 * 22 * 30|
|Data Rate (Hz)||60||120|
|Display Size (inch)||17||17|
|Display Resolution (px)||1280 * 1024||1280 * 1024|
|Bright/Dark Pupil Tracking||Both - automatic optimization||Both - automatic optimization|
|Eye Tracking Server||Embedded||Embedded|
|Audio||Built-in Speakers||Built-in Speakers|
1The Tobii T120 Eye Tracker can also run in T60 mode with full head movement box
Presentation plugin, including documentation on how to install and how to use it:
SensoMotoric Instruments (SMI)