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      Gonadotropic and Photosensitive Abilities of the Lobus paraolfactorius:Electrophysiological Study in Quail

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          Abstract

          Spontaneous and flash-altered multiunit activity MUA was recorded from the lobus paraolfactorius of young male quail reared in either long or short daily photoperiods. The birds were subjected to testosterone administration, castration, optic nerve section or retroparaolfactory disconnection and compared to intact controls. In all experimental and intact quail, iterative flashes led to decreased paraolfactory MUA. Spontaneous firing rates were found to be significantly higher during the light than during the dark part of the photoperiods, indicating some direct effect of environmental lighting on the paraolfactory neuronal populations. However, blinded as well as paraolfactory disconnected animals failed to exhibit any difference in firing rates according to the daily short and long photoperiods as seen in controls, suggesting that the light regime might also indirectly influence the paraolfactory activity.

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          Author and article information

          Journal
          NEN
          Neuroendocrinology
          10.1159/issn.0028-3835
          Neuroendocrinology
          S. Karger AG
          0028-3835
          1423-0194
          1983
          1983
          26 March 2008
          : 36
          : 2
          : 81-87
          Affiliations
          Laboratory of Neuroendocrinology B, University of Montpellier II, France
          Article
          123441 Neuroendocrinology 1983;36:81–87
          10.1159/000123441
          6835473
          © 1983 S. Karger AG, Basel

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          Page count
          Pages: 7
          Categories
          Original Paper

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