Copy reference, caption or embed code

Figure 4 - Songbirds can learn flexible contextual control over syllable sequencing

Figure 4. Contextual changes are local to the target sequences. (A) Transition diagram for the song of Bird 6 (spectrogram in Figure 1) in yellow probe context. Sequences of syllables with fixed transition patterns (e.g. 'aab') as well as repeat phrases and introductory notes have been summarized as single states to simplify the diagram. (B) Transition matrix for the same bird, showing same data as in (A). (C) Differences between the two contexts are illustrated by subtracting the transition matrix in the yellow context from the one in the green context, so that sequence transitions which are more frequent in green context are positive (colored green) and sequence transitions which are more frequent in yellow are negative (colored yellow). For this bird, the majority of contextual differences occurred at the branch point ('aab') which most closely preceded the target sequences ('ab-c' and 'ab-d'), while very little contextual difference occurred at the other three branch points ('i', 'wr', 'cr'). (D-F) Same for Bird 2 for which two different branch points ('f' and 'n') preceded the target sequences ('f-abcd' and 'n-abcd') (spectrogram in Figure 3). (G) Proportion of changes at the branch point(s) most closely preceding the target sequences, relative to the total magnitude of context differences for each bird (see Materials and methods). Most birds exhibited high specificity of contextual changes to the relevant branch points. Source data in Figure 4-source data 1. The online version of this article includes the following source data and figure supplement(s) for figure 4:
Contextual changes are local to the target sequences. (A) Transition diagram for the song of Bird 6 (spectrogram in Figure 1) in yellow probe context. Sequences of syllables with fixed transition patterns (e.g. 'aab') as well as repeat phrases and introductory notes have been summarized as single states to simplify the diagram. (B) Transition matrix for the same bird, showing same data as in (A). (C) Differences between the two contexts are illustrated by subtracting the transition matrix in the yellow context from the one in the green context, so that sequence transitions which are more frequent in green context are positive (colored green) and sequence transitions which are more frequent in yellow are negative (colored yellow). For this bird, the majority of contextual differences occurred at the branch point ('aab') which most closely preceded the target sequences ('ab-c' and 'ab-d'), while very little contextual difference occurred at the other three branch points ('i', 'wr', 'cr'). (D-F) Same for Bird 2 for which two different branch points ('f' and 'n') preceded the target sequences ('f-abcd' and 'n-abcd') (spectrogram in Figure 3). (G) Proportion of changes at the branch point(s) most closely preceding the target sequences, relative to the total magnitude of context differences for each bird (see Materials and methods). Most birds exhibited high specificity of contextual changes to the relevant branch points. Source data in Figure 4-source data 1. The online version of this article includes the following source data and figure supplement(s) for figure 4:
Go to figure page
Reference
Caption
Embed code