EToralreading: Data: Eye movements (fixations) over text.

Description Usage Format Details Source

Description

Nine different readers reading the same three stories. Some included data is poor quality.

Usage

1

Format

A data.frame with 6676 rows and 8 variables:

subj

Subject identifier.

eye

The eye being tracked. Always "RIGHT".

xpos

Screen coordinates of the fixation; its (average) x position in pixels.

ypos

Screen coordinates of the fixation; its (average) y position in pixels. Note that the origin is in the upper left hand corner.

stime

Start time of fixation, in milliseconds from the beginning of the trial.

etime

End time of fixation, in milliseconds from the beginning of the trial.

label

Hand assigned labels corresponding to the nominal line of text for each fixation (line 1, 2, 3, etc). Assignment was done by first identifying the "retrace" (return from the end of line n to the beginning of line n+1) after each line of text. Then, fixations before the first retrace were assigned to line 1; those between the first and second retrace were assigned to line 2, etc. Labels with values like "x.5" indicate fixations that occur within a retrace.

story

Identifier for the text being read (1,2, or 3). Bit map images for each text can be found as system.file("extdata/story01.png", package="FDBeye"), for example. Coordinate values for fixations correspond to pixel locations in the bitmaps.

Details

Data were collected using an SR Research Eyelink 1000+ eye tracker with remote camera configuration and head stabilization. Data were extracted from EDF files as "fixation reports" using the SRR Data Viewer software.

Source

Data collected as part of U.S. National Institutes of Health grant R01 HD071988 to Haskins Laboratories.


davebraze/FDBeye documentation built on Nov. 21, 2017, 11:23 a.m.