Active head movements contribute to spatial updating across gaze shifts

Keeping visual space constant across movements of the eye and head is a yet not fully understood feature of perception. To understand the mechanisms that update the internal coordinates of space, research has mostly focused on eye movements. However, in natural vision head movements are an integral part of gaze shifts that enlarge the field of vision. Here, we directly compared spatial updating for eye and head movements. In a virtual reality environment, participants had to localize the position of a stimulus across the execution of a gaze shift. We found that performing head movements increased the accuracy of spatial localization. By manipulating the speed of the visual scene displacement that a head movement produced, we found that spatial updating takes into account the sensorimotor contingencies of vision. Traditional accounts of perception during gaze shifts assume that self-produced changes of vision are suppressed. In direct contrast to this theory, we find that self-produced c..., Data is preprocessed and saved as pickle file (a python specific file format). Data can be opened in python with the package pandas and the function read_pickle(). Raw data is too big for an upload., , # Active head movements contribute to spatial updating across gaze shifts

[https://doi.org/10.5061/dryad.d51c5b09x](https://doi.org/10.5061/dryad.d51c5b09x)

Data is pre-processed and saved as pickle file (a python specific file format). Data can be opened in python with the package pandas and the function read_pickle(). Raw data is too big for an upload. 

Names of the data files consist the following information: SubjectID, what moved in this condition (e.g. eyes, head and eyes), the restriction imposed on the performed gaze shift (unrestricted = movement, restricted (eyes had to reach the gaze shift target prior to any head movement) = no movement), the visibility of the targets the gaze shift had to be performed to (permanent targets = start and target stimulus were permanently visible, temporary targets = start and target stimulus were only visible when needed to perform the gaze shift), the background during the performance of the gaze shift (gabor = whole-field grating, no gabor...