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. Author manuscript; available in PMC: 2010 Jan 28.
Published in final edited form as: J Comput Neurosci. 2008 Jan 5;25(1):1–24. doi: 10.1007/s10827-007-0062-6

Fig. 3.

Fig. 3

Feature extraction in ELL during simultaneous random AM and random PM for an I-unit (A), E-unit (B), advance-unit (C), delay-unit (D), and combination E/advance-unit (E). The left column shows the spike-triggered average stimulus from -300 ms to 0 ms relative to the spike time, with amplitude plotted against phase. The arrows denote the direction of modulation with respect to time, and the solid circles mark the points occurring at 0, -10, -20, -30, -40, and -50 ms before the spike time. The right column shows the receiver operating characteristic (ROC) curves for the actual stimulus, and the curves that result from randomizing either the AM or the PM in the stimulus. In each case, the solid, thin, straight line denotes chance performance.