[1] Vanderbilt Univ, Robot & Autonomous Syst Lab, Dept Elect Engn & Comp Sci, Nashville, TN 37235 USA
[2] Vanderbilt Kennedy Ctr, Treatment & Res Inst Autism Spectrum Disorders, Nashville, TN 37203 USA
[3] Vanderbilt Univ, Med Ctr, Treatment & Res Inst Autism Spectrum Disorders, Dept Pediat, Nashville, TN 37203 USA
[4] Vanderbilt Univ, Dept Elect Engn & Comp Sci, Nashville, TN 37212 USA
[5] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37212 USA
[6] Vanderbilt Univ, Robot & Autonomous Syst Lab, Nashville, TN 37212 USA