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Additional Information

Competing Interests

The author is not in any way affiliated with or sponsored by the EyeTribe or any other commercial party.

Author Contributions

Edwin Dalmaijer conceived and designed the experiments, performed the experiments, analyzed the data, wrote the paper, prepared figures and/or tables.

Human Ethics

The following information was supplied relating to ethical approvals (i.e., approving body and any reference numbers):

Central University Research Ethics Committee (CUREC), University of Oxford. REC No. 12/SC/0044.

Data Deposition

The following information was supplied regarding the deposition of related data:

All source code for experiments and analysis, including the output files, are available from GitHub, link:

(is currently a private repository, but will become public after pre-publication of the attached manuscript)


This research was supported by a European Union FP7 Marie Curie ITN grant (606901). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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