Subdivisions of the Auditory Midbrain (N. Mesencephalicus Lateralis, pars dorsalis) in Zebra Finches Using Calcium-Binding Protein Immunocytochemistry

摘要: The midbrain nucleus mesencephalicus lateralis pars dorsalis (MLd) is thought to be the avian homologue of central mammalian inferior colliculus. As such, it a major relay in ascending auditory pathway all birds and songbirds mediates feedback necessary for learning maintenance song. To clarify organization MLd, we applied three calcium binding protein antibodies tissue sections from brains adult male female zebra finches. staining patterns resulting application parvalbumin, calbindin calretinin differed each other different parts nucleus. Parvalbumin-like immunoreactivity was distributed throughout whole nucleus, as defined by totality terminations brainstem afferents; words parvalbumin-like defines boundaries MLd. Staining two regions MLd: inner (MLd.I) outer (MLd.O). MLd.O largely surrounds MLd.I distinct surrounding intercollicular Unlike case some non-songbirds, however, MLd do not correspond terminal zones projections nuclei angularis laminaris, which have been found overlap substantially