Ontology type: schema:ScholarlyArticle
2003-04-21
AUTHORSAlan Carleton, Leopoldo T. Petreanu, Rusty Lansford, Arturo Alvarez-Buylla, Pierre-Marie Lledo
ABSTRACTNew neurons are continually recruited throughout adulthood in certain regions of the adult mammalian brain. How these cells mature and integrate into preexisting functional circuits remains unknown. Here we describe the physiological properties of newborn olfactory bulb interneurons at five different stages of their maturation in adult mice. Patch-clamp recordings were obtained from tangentially and radially migrating young neurons and from neurons in three subsequent maturation stages. Tangentially migrating neurons expressed extrasynaptic GABAA receptors and then AMPA receptors, before NMDA receptors appeared in radially migrating neurons. Spontaneous synaptic activity emerged soon after migration was complete, and spiking activity was the last characteristic to be acquired. This delayed excitability is unique to cells born in the adult and may protect circuits from uncontrolled neurotransmitter release and neural network disruption. Our results show that newly born cells recruited into the olfactory bulb become neurons, and a unique sequence of events leads to their functional integration. More... »
PAGES507-518
http://scigraph.springernature.com/pub.10.1038/nn1048
DOIhttp://dx.doi.org/10.1038/nn1048
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/12704391
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