Figure 5
From: Distinct timescales for the neuronal encoding of vocal signals in a high-order auditory area
Responses to the two AB pairs that form ABAB sequences reflects sensitivity to the context in awake birds. (a) For ABAB-Same series, the same syllables A and B were used to build pairs of syllables AB that were repeated twice within a sequence, so two consecutive sequence renditions (n) include two repetitions of the same pairs of syllable AB. For ABAB-Var series, variants of the syllables A and B were used to build pairs of syllables AB that were repeated twice within a sequence so two consecutive sequence renditions include variants of the pairs of syllable AB repeated twice. (b) Strength of responses (RS values) changed from the first AB pair to the second one. The exposure to the first pair of syllables AB impacts the responses to the second pair of syllables AB within a stimulus rendition in awake birds (b–d). Evoked auditory responses (b) and CorrCoef (c) were overall higher for ABAB-Same than for ABAB-Var sequences and were lower for the second pair of syllables AB than for the first pair. Yet, Pearson correlation coefficient measured on each individual spike train between the first and second pair of syllables AB was lower for ABAB-Var than ABAB-Same sequences (d). *, ** and ***, p < 0.05, 0.01 and 0.001, respectively (see main text for statistics details).
