Correction to: Scientific Reports https://doi.org/10.1038/s41598-017-02469-7, published online 24 May 2017

The original version of this Article contained a typographical error in the spelling of the author Sonia Benitez-Rivero, which was incorrectly given as Sonia Benitez-Riveiro.

In addition, an incorrect version of the drawing of the joystick in Figure 1 was inadvertently used.

These errors have now been corrected in the HTML and PDF versions of the Article.