The effect of subjects' global interest in the image set on eye movement parameters for the first two seconds of image observation.

<p>The result pattern found regarding fixation duration (A), saccade frequency (B), and saccade length (C) are exact replications of the original results found for the whole observation interval of six seconds. Vertical lines on top of bars indicate standard error of the mean.</p

The effect of subjects' global interest in the image set on eye movement parameters depending on image type.

<p>Significant interactions were found regarding fixation duration (A), saccade frequency (B), individual entropy (C), and inter-subject variance (reliability of fixation density maps, D). Blue bars represent participants who rated the image set as interesting (RG-high), and red bars represent participants who rated images as not interesting (RG-low). Vertical lines on top of bars indicate standard error of the mean.</p

Examples of fixation distribution maps for single subjects on selected urban and nature images as well as total fixation distribution maps for all five presentation runs.

<p>The spread of fixation distributions quantified by means of entropy values is depicted (left entropy value  =  corrected via bootstrapping/right entropy value  =  exact value without correction for number of fixations). The right column depicts fixation distribution maps, including all fixations of the sample to illustrate a stronger central bias at later presentation runs.</p

Significant three-way interaction between repeated image presentation, subjects' global interest in the image set and subjects' motivational disposition (AOP; action orientation during performance of activities) regarding several eye movement parameters.

<p>The figure shows fixation duration (A), saccade frequency (B), and inter-subject variance of fixation density maps (C). Figures describe course of eye movement changes with respect to four different motivation groups: Red lines represent mean values of action-oriented participants (AOP), and blue lines indicate state-oriented participants (SOP). Both groups are additionally subdivided into participants who rated images as interesting (RG-high) and those who did not (RG-low). Vertical lines indicate standard error of the mean.</p

Active sensing - interaction of behavior and input in various modalities

Work presented in the 7th Meeting of the German Neuroscience Society / 31st Göttingen Neurobiology Conference

Main effect of subjects' global interest in the image set on eye movement parameters.

<p>The figure shows fixation duration (A), saccade frequency (B), saccade length (C), individual entropy (D), and inter-subject variance (reliability of fixation density maps, E). Blue bars represent participants who rated the image set as interesting (RG-high), and red bars represent participants who rated images as not interesting (RG-low). Vertical lines on top of bars indicate standard error of the mean.</p

The effects of repeated image presentation (left column) and image type (right column) on eye movement parameters for the first two seconds of image observation.

<p>The result pattern found regarding fixation duration (A), saccade frequency (B), and saccade length (C) are exact replications of the original effects found for the whole observation interval of six seconds. Vertical lines on top of bars indicate standard error of the mean. Significant differences between presentation runs (post-hoc Bonferroni adjusted t-tests) are marked.</p

Examples of images: (a) nature; (b) urban; (c) fractal; (d) pink-noise.

<p>Examples of images: (a) nature; (b) urban; (c) fractal; (d) pink-noise.</p

Significant three-way interactions between image type, subjects' global interest in the image set, and subjects' motivational disposition (AOP; action orientation during performance of activities) regarding several eye movement parameters.

<p>Figures describe the course of significant eye movement changes with respect to four different motivation groups on the level of fixation duration (A), saccade frequency (B), individual spread of fixation distribution (entropy, C), and inter-subject variance of fixation density maps (D). Red lines represent mean values of action-oriented participants (AOP), and blue lines indicate state- oriented participants (SOP). Both groups are additionally subdivided into participants interested in images (RG-high) and those who were not (RG-low). Vertical lines indicate standard error of the mean.</p

Main effect of repeated image presentation on eye movement parameters.

<p>The figure shows fixation duration (A), saccade frequency (B), saccade length (C), individual fixation distribution (individual entropy, D), and inter-subject variance of fixation density maps (E). Red arrows indicate changes in parameters predicted by hypothesis 1. Vertical lines on top of bars indicate standard error of the mean. Significant differences between presentation runs (post-hoc Bonferroni adjusted t-tests) are marked.</p