How to read neuron-dropping curves?

Front Syst Neurosci. 2014 May 30:8:102. doi: 10.3389/fnsys.2014.00102. eCollection 2014.
No abstract available

Keywords: brain-machine interface; large-scale recording; neuron-dropping curve; neuronal ensemble recordings; neuronal noise; neuronal tuning; neuroprosthetic device.