http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-1-6.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-1-6.tri.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-2-6.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-2-6.tri.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-3-6.spk.txt.bz2
http://potterlab.bme.gatech.edu/development-data/simple-text/daily/stim/sparse/6-3-6.tri.txt.bz2