Long Range Eye Movement Recorder

Need A complete eye tracking system specifically designed for research studies with functional MRI. The system must work with a variety of MRI equipment, include a visual display system and optics for use outside of the magnet for training and testing. The system must also be reliable and easy to use and maintain.
Solution The ASL model R‐LRO6 is the first video based eye tracking system designed to meet these specific needs. Our long range optics module can be placed up to 16 feet from the subject,avoiding interference with the fMRI system. A small relay mirror is the only piece installed within the magnet. A second set of remote optics can be attached to the modular eye tracking control unit and used for training and testing outside the magnet. Compatibility with a variety of stimulus generation software products, including MatLab, E‐Prime and Presentation allows to create and perform gaze contingent timed events. This system meets the needs of minimal intrusion, ease of use and easy maintenance.
Optics fMRI Optics are mounted in/or out of the magnet room (through a wave guide), up to 16 feet away. Remote Pan/Tilt Optics attach to the same system, can be used outside the magnet room.
Control Unit 6000 modular eye tracking control unit that will connect to either set of optics and will export X, Y coordinates and pupil size, real-time, analog or digital. Also will export and import event flags.Modular system allowing the eye tracker to be used with remote optics when not being used in the fMRI Compatible with Matlab, Presentation, E‐Prime, Cortex and Tempo.

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Quick Set Up, Ease of Use & Portability

ASL provides an adjustable clam shell shelf that allows for quick alignment with the magnet bore. The setup and the calibration for each participant are quick and easy. The operating software includes the ASL auto-shareholding of the eye image and various calibration procedures depending on your research requirements. In many cases (ex. the Siemens 3T Allegra) there is not enough room to mount a separate mirror to track the eye.In these cases the mirror used to view the stimulus may also be used to track the eye, minimizing set up time and increasing the participant’s comfort. Nothing is worn by the participants.

Various Temporal Resolutions

The standard configuration of the system includes a 60 Hz camera. For other research requirements, the system is available with high speed optics, capable of tracking at 120 and 240 Hz. This unique feature gives you the flexibility to broaden your research questions.

Accurate & Reliable Eye Movement Data

Data output and input are available in real time. The system outputs real-time X and Y gaze coordinates and pupil size. This data is available as analog, digital and video outputs. In addition, the system will import data (16 bit parallel digital port, TTL level positive true) that can also be used to flag data. Data can be recorded and analyzed offline. The EYE-TRAC®6 includes our EYENAL™ and FIXPLOT™ software programs for analyzing and displaying the collected data.

Concurrent Studies with other EYE-TRAC®6 Optics

The EYE-TRAC®6 control unit can be configured with all of ASL EYE-TRAC®6 optics. This allows you the ability to conduct studies inside and outside of the magnet room. ASL offers multiple solution packages as well as the ability to share components. The EYE-TRAC®6 control unit is compact and can easily be carried from the control room of the magnet to other laboratories or mock scanner. Acquiring additional optics along with the complete ASL fMRI long range solution provides you with the opportunity to optimize your research funding.