Crossref journal-article
Society for Neuroscience
The Journal of Neuroscience (393)
Abstract

In the olfactory bulb (OB), new neurons are added throughout life, forming an integral part of the functioning circuit. Yet only some of them survive more than a month. To determine whether this turnover depends on olfactory learning, we examined the survival of adult newborn cells labeled with the cell division marker BrdU, administered before learning in an olfactory discrimination task. We report that discrimination learning increases the number of newborn neurons in the adult OB by prolonging their survival. Simple exposure to the pair of olfactory cues did not alter neurogenesis, indicating that the mere activation of sensory inputs during the learning task was insufficient to alter neurogenesis. The increase in cell survival after learning was not uniformly distributed throughout angular sectors of coronal sections of the OB. Monitoring odor activation maps using patterns of Zif268 immediate early gene expression revealed that survival was greater in regions more activated by the non-reinforced odorant. We conclude that sensory activation in a learning context not only controls the total number of newborn neurons in the adult OB, but also refines their precise location. Shaping the distribution of newborn neurons by influencing their survival could optimize the olfactory information processing required for odor discrimination.

Bibliography

Alonso, M., Viollet, C., Gabellec, M.-M., Meas-Yedid, V., Olivo-Marin, J.-C., & Lledo, P.-M. (2006). Olfactory Discrimination Learning Increases the Survival of Adult-Born Neurons in the Olfactory Bulb. The Journal of Neuroscience, 26(41), 10508–10513.

Authors 6
  1. Mariana Alonso (first)
  2. Cécile Viollet (additional)
  3. Marie-Madeleine Gabellec (additional)
  4. Vannary Meas-Yedid (additional)
  5. Jean-Christophe Olivo-Marin (additional)
  6. Pierre-Marie Lledo (additional)
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Dates
Type When
Created 18 years, 10 months ago (Oct. 11, 2006, 1:30 p.m.)
Deposited 2 years, 4 months ago (April 13, 2023, 1:40 p.m.)
Indexed 2 months, 2 weeks ago (June 2, 2025, 12:27 p.m.)
Issued 18 years, 10 months ago (Oct. 11, 2006)
Published 18 years, 10 months ago (Oct. 11, 2006)
Published Online 18 years, 10 months ago (Oct. 11, 2006)
Published Print 18 years, 10 months ago (Oct. 11, 2006)
Funders 0

None

@article{Alonso_2006, title={Olfactory Discrimination Learning Increases the Survival of Adult-Born Neurons in the Olfactory Bulb}, volume={26}, ISSN={1529-2401}, url={http://dx.doi.org/10.1523/jneurosci.2633-06.2006}, DOI={10.1523/jneurosci.2633-06.2006}, number={41}, journal={The Journal of Neuroscience}, publisher={Society for Neuroscience}, author={Alonso, Mariana and Viollet, Cécile and Gabellec, Marie-Madeleine and Meas-Yedid, Vannary and Olivo-Marin, Jean-Christophe and Lledo, Pierre-Marie}, year={2006}, month=oct, pages={10508–10513} }