Organization of the zebra finch song control system: Functional organization of outputs from nucleus robustus archistriatalis
- 22 July 1991
- journal article
- research article
- Published by Wiley in Journal of Comparative Neurology
- Vol. 309 (4), 486-494
- https://doi.org/10.1002/cne.903090405
Abstract
The organization of projections from nucleus robustus archistriatalis (RA) was mapped by a combination of anatomical tracer techniques. After injections of retrograde tracers in the syringeal part of the hypoglossal motor nucleus (nXIIts), labelled cells were seen in ipsilateral RA, in agreement with previous work. However, a shallow band in the dorsal and dorsocaudal part of RA did not contain labelled cells. Cells in this “cap” area were labelled following tracer injections in the dorsomedial nucleus of midbrain ICo (DM), the other known target of RA projections. The topography of outputs to nXIIts was further examined by making small injections of retrograde tracer into physiologically identified control zones for individual syringeal muscles in nXIIts. The distribution of labelled cells in RA revealed bands of cells that cross RA in approximately horizontal layers and project to different parts of nXIIts. This topography was confirmed with the anterograde tracer PHA-L. Thus RA contains two functional subdivisions, one related to midbrain centers for vocalization and the other directly controlling syringeal motorneurons. The latter area can be further divided into zones that preferentially engage particular syringeal muscles.Keywords
This publication has 19 references indexed in Scilit:
- Contributions of syringeal muscles to respiration and vocalization in the zebra finchJournal of Neurobiology, 1991
- Organization of the zebra finch song control system: I. Representation of syringeal muscles in the hypoglossal nucleusJournal of Comparative Neurology, 1988
- A respiratory-vocal pathway in the brainstem of the pigeonBrain Research, 1987
- Fluorescent latex microspheres as a retrograde neuronal marker for in vivo and in vitro studies of visual cortexNature, 1984
- Forebrain Lesions Disrupt Development But Not Maintenance of Song in Passerine BirdsScience, 1984
- Connections of vocal control nuclei in the canary telencephalonJournal of Comparative Neurology, 1982
- Midbrain vocalization centres in birdsTrends in Neurosciences, 1981
- Central control of song in the canary, Serinus canariusJournal of Comparative Neurology, 1976
- PERIODATE-LYSINE-PARAFORMALDEHYDE FIXATIVE A NEW FIXATIVE FOR IMMUNOELECTRON MICROSCOPYJournal of Histochemistry & Cytochemistry, 1974
- The anatomy of the syrinx in passerine birdsJournal of Zoology, 1972