Eye Tracking Data Output
Eye tracking data is exported from the Dataview & Export tab, alongside the rest of your study's data. Labvanced separates two kinds of data: normal data, recorded once per trial (like a response or a click), and timeseries data, recorded many times per trial. Gaze coordinates are timeseries data, since they are recorded many times per second rather than once per trial: each row represents a single gaze sample, with a precise timestamp and a confidence value (0 for a blink or an undetected face, up to 1 for a confident detection) alongside the X and Y coordinates.
Because webcam hardware limits how fast a browser can process frames, sampling rate varies over the course of a recording and tops out at around 30Hz for most commercially available webcams. If you also recorded calibration or trial error, those values are reported in frame units alongside your regular per-trial data. Labvanced's GitHub repository has scripts to help process the exported data further.
Learn More
Webcam Eye Tracking Guide
The Webcam Eye Tracking Guide is the complete reference for building an eye tracking study in Labvanced, covering stimuli, calibration settings, task setup, recording, and the data export summarized here. If you are setting up eye tracking for the first time, it is the best place to start.
Recording and Exporting Gaze Data
Recording and Exporting Gaze Data covers the full breakdown of what gets recorded and how to set it up: the automated event setup dialog that creates gaze and fixation recording events for you, building those events manually, and restricting recording to specific stimulus objects. It also covers reading the resulting data export in detail, including the timestamp and confidence columns and how they relate to the times column.
In-Lab Hardware Instead
If you are connecting your own in-lab eye tracking hardware rather than using Labvanced's webcam eye tracking, see Eye Tracking in Labvanced for that option.