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1998[X]
1Author    Hermann Wagner, Harald LukschRequires cookie*
 Title    Effect of Ecological Pressures on Brains: Examples from Avian Neuroethology and General Meanings  
 Abstract    Comparative neuroethological research emphasizes that brains of animals have been shaped by the specific demands and constraints imposed by the ecological niche that a species occupies. Since avian species have developed very diverse life styles and occupy extreme ecological niches, bird brains should show many specializations, which may be revealed in species that have survived under high ecological pressures. In this paper, we will give several examples of adaptations, in which we are able to correlate structural and physiological spe­ cializations to the specific ecological demands: adaptations found to nocturnal hunting in barn owls, the characteristics of bird song and its underlying neurobiological correlates, reti-nopetal projections and their relation to peripheral attentional switching, looming detection, and adaptations related to memory capacities of food-storing birds. We stress especially that the analysis of the anim al's ecological situation is important in understanding the factors that shaped both behavior and the neuronal substrate. 
  Reference    Z. Naturforsch. 53c, 560 (1998); received April 2 1998 
  Published    1998 
  Keywords    Neural Computation, Vision, Audition, Comparative, Sensory 
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 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-0560.pdf 
 Identifier    ZNC-1998-53c-0560 
 Volume    53 
2Author    Martin Egelhaaf, Roland Kern, Anne-Kathrin WarzechaRequires cookie*
 Title    Sensory Ecology and Neural Coding in Arthropods  
 Abstract    Arthropods live in almost any conceivable habitat. Accordingly, structural and functional specialisations have been described in many species which allow them to behave in an adap­ tive way with the limited computational resources of their small brains. These adaptations range from the special design of the eyes, the spectral sensitivities of their photoreceptors to the specific properties of neural circuits. 
  Reference    Z. Naturforsch. 53c, 582 (1998); received April 9 1998 
  Published    1998 
  Keywords    Sensory Ecology, Behaviour, Neural Coding, Vision, Arthropods 
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 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-0582.pdf 
 Identifier    ZNC-1998-53c-0582 
 Volume    53