Innervation of the syrinx of the zebra finch (Taeniopygia guttata).

摘要: In songbirds, the learning and maintenance of song is dependent on auditory feedback, but little known about presence or role other forms sensory feedback. Here, we studied innervation avian vocal organ, syrinx, in zebra finch. Using a combination immunohistochemistry, immunofluorescence neural tracing with subunit B cholera toxin (CTB), analysed peripheral central endings branch hypoglossal nerve that supplies tracheosyringeal nerve. syringeal muscles, show numerous choline acetyl transferase-like immunoreactive en plaque motor endplates substance P-like immunoreactive, thin varicose free endings. Substance were also present luminal tissues, especially epithelium trachea pessulus. Also, by transganglionic following injections CTB nerve, identified as targets receptors caudolateral part interpolaris subnucleus descending trigeminal tract, region nucleus tractus solitarius, lateral band principal nucleus. Further studies are required to determine modalities these connections their specific synaptic targets.