Fig. 10.

Impact of the TRN on mutual information (MI). A: the MI between the afferent train to the TC cell and the L4 spike train increases, then decreases, as the input rate to the TC cell increases and increases as the length of the simulation increases. B: dividing the MI by the number of spikes in the output cell causes MI to become a monotonic decreasing function with input rate and equalizes MI across the different lengths of simulation. C: across a range of rates of input to the TC and TRN cell, the normalized relative MI shows a complex relationship with input rates. D: at low rates of afferent stimulation, TRN stimulation causes a drop in MI at low TRN rates, then a recovery of MI at higher rates. At high rates of afferent stimulation, TRN stimulation at low rates causes an increase in MI, which then decreases at high rates of TRN stimulation.