Figure 4
From: Neural correlates of vocal initiation in the VTA/SNc of juvenile male zebra finches
Comparison of syllable-related activity. (a–c) From left to right: mean firing rate at the first syllable is plotted against the spontaneous firing rate, mean firing rate at the second syllable, mean firing rate of the third syllable, and mean firing rate at the final syllable. (a) Data from singing-related units is shown. (b) The low firing rate portion (0–20 Hz) of the same data as in (a) are shown for clarity. (c). Data from non-singing related units is shown.
