DOI: 10.5061/dryad.b54gp
title: Data from: Temporal structure of human gaze dynamics is invariant during free viewing

description: We investigate the dynamic structure of human gaze and present an
 experimental study of the frequency components of the change in gaze
 position over time during free viewing of computer-generated fractal
 images. We show that changes in gaze position are scale-invariant in time
 with statistical properties that are characteristic of a random walk
 process. We quantify and track changes in the temporal structure using a
 well-defined scaling parameter called the Hurst exponent, H. We find H is
 robust regardless of the spatial complexity generated by the fractal
 images. In addition, we find the Hurst exponent is invariant across all
 participants, including those with distinct changes to higher order visual
 processes due to neural degeneration. The value we find for H of 0.57
 shows that the gaze dynamics during free viewing of fractal images are
 consistent with a random walk process with persistent movements. Our
 research suggests the human visual system may have a common strategy that
 drives the dynamics of human gaze during exploration.
description: Subject and Trial Image
 dataXcel spreadsheet which
 lists subject’s age, sex, diagnosis and trial. Also listed are the images
 (along with image complexity value) for each trial associated with a
 particular xdat value.SubjectTrialImageDetails.xlsxY1FilesMatlab Struct array of data for subject Y1. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y3FilesMatlab Struct array of data for subject Y3. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y6FilesMatlab Struct array of data for subject Y6. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y7FilesMatlab Struct array of data for subject Y7. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y8FilesMatlab Struct array of data for subject Y8. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.C2FilesMatlab Struct array of data for subject C2. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.FTD1FilesMatlab Struct array of data for subject FTD1. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.FTD3FilesMatlab Struct array of data for subject FTD3. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.AD2FilesMatlab Struct array of data for subject AD2. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.AD3FilesMatlab Struct array of data for subject AD3. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y2FilesMatlab Struct array of data for subject Y2. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y4FilesMatlab Struct array of data for subject Y4. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.Y5FilesMatlab Struct array of data for subject Y5. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.C1FilesMatlab Struct array of data for subject C1. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.C3FilesMatlab Struct array of data for subject C3. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.FTD2FilesMatlab Struct array of data for subject FTD2. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.FTD4FilesMatlab Struct array of data for subject FTD4. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.FTD5FilesMatlab Struct array of data for subject FTD5. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.PSP1FilesMatlab Struct array of data for subject PSP1. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.AD1FilesMatlab Struct array of data for subject AD1. Contains raweyedata which is of the form [time pupilrecognition xposition(pix) yposition(pix)] , xdat which is the value associated with the image and trial which gives the trial letter for the given data.