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. 2011 Dec 6;6(12):e28593. doi: 10.1371/journal.pone.0028593

Figure 6. Signal representation in neuronal activity is enhanced by a gain control mechanism.

Figure 6

(A) Representative neuronal response of AN1 in P. podagrosus to conspecific calling songs under masking noise (SNR −6 dB). Note reduced action potential activity during interstimulus intervals (ISI) compared with the noise-alone situation. (B) Quantification of suppression of the response to noise for three different SNRs (N = 8). Grey bars show the average spike rate during ISI compared with noise-alone (black bar, control). The average stimulus intensity in all experiments was 54.4±1.2 dB SPL.