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      Volumetric Comparison of Auditory Structures in the Brains of European Wild Boars (Sus scrofa) and Domestic Pigs (Sus scrofa f. dom.)

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      ,
      Brain, Behavior and Evolution
      S. Karger AG
      Domestication, Allometric relationship, European boar, Pig, Brain, Auditory structures

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          Abstract

          The size of certain brain parts involved in the processing of auditory stimuli was measured in European wild boars (Sus scrofa) and domestic pigs (Sus scrofa f. dom.). By means of intraspecific allometric methods for analyzing the brain weight to body weight relationships, the volumes were compared in both groups. In general, all measured structures were smaller in the domestic form, indicating that domestication has led to a decrease in the size of auditory brain parts. Within the auditory system, however, differences in the amount of decrease were observed in different structures The cochlear nucleus is only 15% smaller and the medial geniculate body about 20% smaller in the domestic form, whereas the superior olive (28%), the inferior colliculus (28%), the grey matter of the auditory cortex (32%) and the lateral lemniscus (33%) are decreased more significantly. Furthermore, in the medial superior olivary nucleus, there are 9% fewer neurons in the domestic form, but the neuron density has increased by 28 %.

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          Author and article information

          Journal
          BBE
          Brain Behav Evol
          10.1159/issn.0006-8977
          Brain, Behavior and Evolution
          S. Karger AG
          0006-8977
          1421-9743
          1990
          1990
          01 February 2008
          : 35
          : 3
          : 146-155
          Affiliations
          Institut für Haustierkunde, Christian-Albrechts-Universität, Kiel, BRD
          Article
          115863 Brain Behav Evol 1990;35:146–155
          10.1159/000115863
          2375973
          85f47dca-e3b6-49d9-be14-ced3b828b67c
          © 1990 S. Karger AG, Basel

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          History
          Page count
          Pages: 10
          Categories
          Paper

          Geriatric medicine,Neurology,Cardiovascular Medicine,Neurosciences,Clinical Psychology & Psychiatry,Public health
          European boar,Domestication,Auditory structures,Brain,Allometric relationship,Pig

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