Figure 4. Responses to vocalizations that are neither onset nor isomorphic.

Waveforms and PSTHs of the responses to various vocalizations. A, B. Offset responses. C, D, H. Responses during the vocalizations. D, E, F. No response to the vocalization per se but to the low level background noise in the recordings. H. The inset is the spectrogram of the low whistle on a timescale that allows the pronounced click, to which the neuron is responding, to be visualized.