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  • 65.70.+y  (1)
  • Classification tectum cells  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Responses in the optic tectum of the salamanderHydromantes italicus to moving prey stimuli (1982)
    Springer
    Experimental brain research 45 (1982), S. 386-392 
    Details
    ISSN: 1432-1106
    Schlagwort(e): Salamander optic tectum ; Stimulus velocity ; Classification tectum cells
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In the tectum opticum ofHydromantes italicus neurons were recorded extracellularly which responded selectively to moving visual stimuli. Part of the recorded cells were marked iontophoretically by means of alcian-blue dye for anatomical localization. Out of a total of 110 neurons six groups could be distinguished which preferred the square stimulus but differred strongly in their responses to rectangles oriented either vertically or horizontally. Two of these groups showed stimulus preference inversion if the stimulus velocity was changed. These response patterns displayed characteristic differences with those known in other amphibia, well corresponding to differences in the prey catching behaviours.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01208598
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Phase transition at 240 K in C70 single crystal (1993)
    Springer
    Applied physics 56 (1993), S. 227-229 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 31.70.Ks ; 64.70.Pf ; 65.70.+y
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract The thermal expansion of single- and polycrystalline C70 is studied between 5 and 315K using an ultrahigh-resolution capacitance dilatometer. We observe a first-order phase transition in single crystalline C70 at ≈240K and a transition at ≈280K in polycrystalline C70. X-ray diffraction measurements at 300K show that the C70 single crystal has fcc symmetry, whereas the polycrystalline sample is multiphase (fcc and hcp). The results are compared to thermal expansion measurements of solid C60.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00539479
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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