Developmental refinement of inhibitory sound-localization circuits.
The ability to localize sound rapidly and accurately depends on the precise organization of inhibitory neuronal circuits in the auditory brainstem. However, the rules and mechanisms by which this precision is established during development are still poorly understood. Although activity-dependent reorganization has been known for over a decade to have a central role in this process, more recent studies have revealed an unanticipated degree of reorganization that occurs on levels ranging from cellular phenotype to network connectivity. These results suggest novel mechanisms by which immature inhibitory sound-localization circuits become optimized. Lessons from auditory brainstem circuits thus could provide insight into inhibitory development in other brain areas, where inhibitory networks are less experimentally accessible.
Kandler
Karl
K
Department of Neurobiology and Center for the Neuronal Basis of Cognition, University of Pittsburgh School of Medicine, 3500 Terrace Street, Pittsburgh, PA 15261, USA. kkarl@pitt.edu
Gillespie
Deda C
DC
D000367:Age Factors; D000818:Animals; D001303:Auditory Cortex / Q000254:growth & development*; D001306:Auditory Pathways / Q000254:growth & development*; D005998:Glycine / Q000378:metabolism; D009433:Neural Inhibition / Q000502:physiology*; D009473:Neuronal Plasticity / Q000502:physiology; D013017:Sound Localization / Q000502:physiology*; D013569:Synapses / Q000502:physiology*; D005680:gamma-Aminobutyric Acid / Q000378:metabolism
D005680:gamma-Aminobutyric Acid; D005998:Glycine