Figure 2
From: Dynamic encoding of phonetic categories in zebra finch auditory forebrain

Representative multi-unit responses from two recording sites. (a) one site from the NOVEL group that has higher responses to the word “wet”. (b) one site from the EXPOSED group that has higher responses to the word “wit”. The top panel shows the amplitude envelope of the stimulus (an example for “wet” in (a) and “wit” in (b)) and the raster plot of spiking activity over 60 trials (30 for each word). The second panel shows the average peristimulus time histogram (PSTH) of the multi-unit activity for each word category. The bottom two panels show PSTHs for the responses to the words “wet” (blue colors) and “wit” (orange colors) as produced by the same 5 human speakers.