User manual

Introduction

• Real-time feedback of eye data is available on the Host PC during

calibration or recording, allowing other network devices to be devoted to

accurate stimulus delivery.

1.2.2 Display PC

The EyeLink 1000 Display PC administers eye tracker calibration , directs data

collection, and presents stimuli during experiments. On-line eye and gaze

position can be received from the EyeLink Host PC via the Ethernet link making

gaze-contingent paradigms possible. The user can acquire the optional SR

Research Experiment Builder to assist them in creating sophisticated EyeLink

experiments on 32-bit Windows 2000 or XP.

For users who wish to program their own experiments, a wide range of

programming options exist for assisting in automated data acquisition on the

Display PC. A C/C++ programming API with example code exists for Windows,

MacOS 9, Mac OS X, Linux and other operating systems. Additionally, third

parties have made several methods freely available to use the EyeLink with

other software such as MATLAB (PC and MacOS via the Psychtoolbox),

Presentation, and E-Prime. Other languages are supported as well, such as

Python and anything with access to the Windows common object system (COM).

For full details and links to downloadable resources, visit and join the SR

Research support forums at

http://www.sr-support.com .

The Display PC has the following key attributes:

• Runs experiment application software for control of the EyeLink 1000

tracker and stimulus presentation using EyeLink programming API or SR

Research Experiment Builder, allowing development of countless

experimental paradigms.

• Display Applications can configure and control the EyeLink tracker, and

have access to real-time data including gaze position, response box button

presses, and keyboard, with minimal delay and low variability in timing.

• Applications only need to support stimulus generation and control of the

experiment sequence. Relying on the Host PC for data acquisition and

registering responses makes millisecond-accurate timing possible, even

under Windows.

• Data file viewing and conversion tools such as EyeLink Data Viewer and

EyeLink EDF2ASC converter assist researchers in deep analysis of the

data obtained.