FTD2Files

Matlab 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

C3Files

Matlab 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

FTD5Files

Matlab 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

Y7Files

Matlab 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

Data from: Temporal structure of human gaze dynamics is invariant during free viewing

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

Data from: Temporal structure of human gaze dynamics is invariant during free viewing

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

Y6Files

Matlab 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

Subject and Trial Image data

Xcel 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

AD2Files

Matlab 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

Y5Files

Matlab 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