Article (Scientific journals)
In vivo manganese-enhanced magnetic resonance imaging reveals connections and functional properties of the songbird vocal control system
Van der Linden, A.; Verhoye, M.; Van Meir, V. et al.
2002In Neuroscience, 112 (2), p. 467-474
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Keywords :
oscines; song-control nuclei; magnetic resonance imaging; in vivo tract tracing; in vivo axonal transport; sex differences
Abstract :
[en] Injection of manganese (Mn2+), a paramagnetic tract tracing agent and calcium analogue, into the high vocal center of starlings labeled within a few hours the nucleus robustus archistriatalis and area X as observed by in vivo magnetic resonance imaging. Structures highlighted by Mn2+ accumulation assumed the expected tri-dimensional shape of the nucleus robustus archistriatalis and area X as identified by classical histological or neurochemical methods. The volume of these nuclei could be accurately calculated by segmentation of the areas highlighted by Mn2+. Besides confirming previously established volumetric sex differences, Mn2+ uptake into these nuclei revealed new functional sex differences affecting Mn2+ transport. A faster transport was observed in males than in females and different relative amounts of Mn2+ were transported to nucleus robustus archistriatalis and area X in males as compared to females. This new in vivo approach, allowing repeated measures, opens new vistas to study the remarkable seasonal plasticity in size and activity of song-control nuclei and correlate neuronal activity with behavior. It also provides new insights on in vivo axonal transport and neuronal activity in song-control nuclei of oscines. (C) 2002 IBRO. Published by Elsevier Science Ltd. All rights reserved.
Disciplines :
Neurosciences & behavior
Author, co-author :
Van der Linden, A.
Verhoye, M.
Van Meir, V.
Tindemans, I.
Eens, M.
Absil, Philippe ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Balthazart, Jacques  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie de la différenciation sexuelle du cerveau
Language :
English
Title :
In vivo manganese-enhanced magnetic resonance imaging reveals connections and functional properties of the songbird vocal control system
Publication date :
2002
Journal title :
Neuroscience
ISSN :
0306-4522
eISSN :
1873-7544
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
Volume :
112
Issue :
2
Pages :
467-474
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 April 2009

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