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. Author manuscript; available in PMC: 2008 Oct 31.
Published in final edited form as: J Neurophysiol. 2006 Aug 16;96(5):2451–2464. doi: 10.1152/jn.00471.2006

FIG. 1.

FIG. 1

Responses of a chopper unit to a noise at 30 db SPL spectrum level and the same frozen noise with an added 65 db SPL tone. Top: poststimulus time histograms (PSTHs) obtained from 50 trials, with 2-ms bin width. Bottom: dot rasters of discharge times grouped into odd- and even-numbered trials. ra is the correlation coefficient between odd-numbered trials to noise-alone and to tone-plus-noise stimuli. rb (noise alone) and rc (tone plus noise) are correlation coefficients between odd- and even-numbered trials, respectively. G309u9: characteristic frequency (CF) = 482 Hz, spontaneous rate (SR) = 0 sp/s, threshold in quiet = 22 dB SPL.