pupil_data: Sample Time Series of Pupil Area
In jashu/itrak: Tools for processing eye-tracking data

Description Usage Format Source

A sample of 12 time series containing measurements of pupil area used by the "pupil-data-vignette" to illustrate the use of itrak functions.

1	pupil_data

A data frame with 41652 rows and 6 variables:

RECORDING_SESSION_LABEL: index key for the eye-tracking session
SAMPLE_INDEX: index of consecutive integers indicating the temporal order of the observations of each trial in the session
SAMPLE_MESSAGE: field for "stamping" events in an eye-tracking session, such as the onset of a visual stimulus
TIMESTAMP: the computer clock time associated with each observation, in units of milliseconds
LEFT_PUPIL_SIZE: measured area of the left pupil
RIGHT_PUPIL_SIZE: measured area of the right pupil, empty here as the right pupil was not measured

Data were collected in the Mood Disorders Laboratory at the University of Texas at Austin using an EyeLink 1000 Plus, sampling pupil area from a single eye at a frequency of 500 Hz. The data shown here are a selection of 9 experimental trials and 3 drift-correction calibrations from a longer experimental session consisting of 90 trials, each involving a 2-second baseline period of viewing a gray screen followed by 6 seconds of viewing an image from the International Affective Picture System (IAPS).

jashu/itrak documentation built on May 9, 2020, 1:57 p.m.