1 Department of Psychological and Brain Sciences, Center for Systems Neuroscience, and Neurophotonics Center, Boston University, Boston, MA, USA. Electronic address: sjkim1@jh.edu.
2 Department of Mechanical Engineering, Massachusetts Institute of Technology, MIT, Cambridge, MA, USA.
3 Department of Psychological and Brain Sciences, Center for Systems Neuroscience, and Neurophotonics Center, Boston University, Boston, MA, USA. Electronic address: bbscott@gmail.com.