Eyelink 1000 tower mount eyetracker

In all experiments, eye movements were recorded with an SR Research EyeLink 1000+ tower mount eyetracker (spatial resolution 0.01) at a sampling rate of 1000 Hz. Head movements were minimized using a chin and forehead rest integrated with the eyetracker’s tower mount. Although viewing was binocular, eye movements were recorded from the right eye only. The experiment was controlled using SR Research Experiment Builder software. Audio was recorded digitally at a rate of 48 kHz using a Shure SM86 cardioid condenser microphone.
In Experiments 1, 4, and 5, subjects sat 85 cm away from a 21” monitor such that scenes subtended approximately 27° × 20.5° visual angle, and audio was recorded digitally at a rate of 48 kHz using a Roland Rubix 22 USB audio interface and a Shure SM86 cardioid condenser microphone. In Experiments 2 and 3, subjects sat 83 cm away from a 24.5” monitor such that scenes subtended approximately 27° × 20.5° visual angle at a resolution of 1024×768 pixels, presented in 4:3 aspect ratio. For both Experiments 2 and 3, data were collected on two separate systems that were identical except that the operating system for the subject computer in one system was Windows 10, and Windows 7 on the other.

Eye movements were recorded with an SR Research EyeLink 1000+ tower mount eyetracker (spatial resolution 0.01) at a 1000 Hz sampling rate. Head movements were minimized using a chin and forehead rest integrated with the eyetracker’s tower mount. Subjects were instructed to lean against the forehead rest to reduce head movement while allowing them to speak. Although viewing was binocular, eye movements were recorded from the right eye. The experiment was controlled using SR Research Experiment Builder software. Scenes were displayed at 1024×768 pixel resolution. Participants sat 83 cm away from a monitor such that scenes subtended approximately 26° × 19° visual angle, presented in 4:3 aspect ratio. Audio was digitally recorded using a Shure SM86 cardioid condenser microphone. Recorded speech was preamplified using an InnoGear IG101 phantom power preamplifier.

Eye movements were recorded with an SR Research EyeLink 1000+ tower mount eyetracker (spatial resolution 0.01) at a 1000 Hz sampling rate. Subjects sat 83 cm away from a 24.5” monitor such that scenes subtended approximately 26° × 19° visual angle at a resolution of 1024 × 768 pixels, presented in 4:3 aspect ratio. Head movements were minimized using a chin and forehead rest integrated with the eyetracker’s tower mount. Subjects were instructed to lean against the forehead rest to reduce head movement while allowing them to speak during the suppression task. Although viewing was binocular, eye movements were recorded from the right eye. The experiment was controlled using SR Research Experiment Builder software. Data were collected on two systems that were identical except that one subject computer operated using Windows 10, and the other used Windows 7.