Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (99999.001043/2014-05)
Army Research Office (W911NF-17-1-0127-P00001)
National Science Foundation (CNS 09-23050)
Received: 17 February 2019
Accepted: 19 June 2019
First Online: 16 July 2019
: The authors declare that they have no competing interests.