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  • 1
    Electronic Resource
    Electronic Resource
    Weitere Ergebnisse zur Frage cortico-subcorticaler Wechselbeziehungen bei der Ausbildung bedingter Abwehrreflexe (1964)
    Springer
    Psychopharmacology 6 (1964), S. 219-228 
    Details
    ISSN: 1432-2072
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In adult male rats under the influence of 0,1 mg/kg reserpine acquisition of avoidance conditioning was tested. The retention test has shown, that an acquired avoidance reaction is not affected by reserpine in this dosage. Controls were performed with an without injection of equal volumes of a 0,9% NaCl solution. In the two chambered shuttle box arrangement use da conditioned avoidance reaction failed to develope in animals treated with reserpine. The result is discussed and a possible mechanism suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00404012
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Das hypoxiebedingte EEG-Arousalstadium unter dem Einfluss von Pentobarbital und Urethan (1967)
    Springer
    Cellular and molecular life sciences 23 (1967), S. 217-218 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The influence of pentobarbital and urethan on the hypoxia induced EEG arousal was studied in adult rats and rabbits. A depression of this EEG reaction by pentobarbital was found, while the arousal was unchanged by urethan. A possible mechanism for these findings is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02136297
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The human motion VEP as a function of size and eccentricity of the stimulation field (1990)
    Springer
    Documenta ophthalmologica 76 (1990), S. 81-89 
    Details
    ISSN: 1573-2622
    Keywords: Cortical representation ; eccentricity ; human VEP ; motion onset ; M-scaling ; stimulation field size
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A ‘motion onset VEP’ was elicited by the onset of a pattern drift. The amplitude of the most distinct wave (A n200) was determined on the following stimulation conditions: eccentricity, 0 to 23deg; velocity, 1.5 to 16deg/s; spatial frequency, 0.19 to 2.1c/deg; and stimulation field size, 0.2 to 160 deg2. A n200 remained constant at any degree of eccentricity if stimulation field size, velocity, and spatial frequency were M-scaled according to Rovamo-Virsu's M-equations. A n200 decreased as a function of eccentricity if field size and velocity were kept constant (spatial frequency had minimal effect). The size of the cortical representation field (Sc) in this case varied with change in eccentricity (stimulation field size constant). In another experiment, it varied by change in stimulation field size (eccentricity constant). For both conditions, A n200 was proportional to log Sc.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00140501
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The human motion onset VEP as a function of stimulation area for foveal and peripheral vision (1990)
    Springer
    Documenta ophthalmologica 75 (1990), S. 165-173 
    Details
    ISSN: 1573-2622
    Keywords: fovea ; motion onset VEP ; parafovea ; pattern frequency ; stimulation area
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We studied amplitude of the wave N200 of the motion-onset VEP by varying the side length of a square stimulation field between 0.5 and 7 degrees. A significant increase in amplitude was obtained between 0.5 and 1 degree of side length in central stimulation and between 0.5 and 5 degrees in 10-degree peripheral stimulation. Variations of spatial frequency between 0.34 and 6.8 c/deg did not modify the amplitude size, ie, no tuning effect could be found. The results of simultaneous and separate stimulation of foveal and parafoveal regions support the observation that the stimulation field size is a minor influence. Features of motion-sensitive cortical neurons, such as those found in monkeys, could account for this behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146552
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    Paper (German National Licenses)
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