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  • 1
    Electronic Resource
    Electronic Resource
    Genetic selection for avoidance behavior in the rat (1979)
    Springer
    Behavior genetics 9 (1979), S. 309-316 
    Details
    ISSN: 1573-3297
    Keywords: rats ; avoidance learning ; selective breeding ; shuttlebox
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Long-Evans rats were selectively bred for over 20 generations using two behavioral criteria: (1) limited responding to the warning signal during ten pretest trials and (2) either good or poor avoidance behavior during 60 avoidance training trials in a two-way shuttlebox. The results suggest that avoidance behavior in the rat is a heritable characteristic that may be selected independently of activity level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01068209
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Alteration of pituitary-adrenal dynamics induced by a water deprivation regimen (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Experiments are described which were designed to assess the degree of adaptation that occurs in rats chronically exposed to the stress of a water-deprivation regimen and to determine if that adaptation represents a normalization of the hypothalamic-pituitary-adrenal axis. There were no significant differences in mean corticosterone concentrations among control nondeprived rats 1, 4, and 8 weeks after the start of the experiment. The water-deprived rats, however, had significantly elevated plasma steroids 1 and 4 weeks after the onset of deprivation as compared to controls, but not after 8 weeks. Thus, there was a significant decrease in mean plasma corticosterone levels during water deprivation from 1 week to 8 weeks.
    Keywords: BIOSCIENCES
    Type: Physiology and Behavior; 12; 1974
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Increased rate of response of the pituitary-adrenal system in rats adapted to chronic stress (1975)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The response and adaptation of the pituitary-adrenal system to chronic stresses was investigated. These included individual caging, confinement, and exposure to cold for varying periods of time. Studies were carried out demonstrating that during the period of adaptation when plasma corticosterone concentrations returned toward their prestress level despite continued exposure to the stressor, the animals responded to additional stimuli of ether for 1 min, a saline injection, or release from confinement with a faster increase (within 2.5 min) in plasma corticosterone than controls (10 min). It is concluded that during adaptation to a chronic stress the pituitary-adrenal system is not inhibited by the circulating steroid level but is actually hypersensitive to additional stimuli.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: Endocrinology; 97; Sept
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Noradrenergic control of circadian rhythms in Cebus albifrons (1973)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: AEROSPACE MEDICINE
    Type: Life Sci. Publ., Vol. 1; 7 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Automatic fluid dispenser (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Fluid automatically flows to individual dispensing units at predetermined times from a fluid supply and is available only for a predetermined interval of time after which an automatic control causes the fluid to drain from the individual dispensing units. Fluid deprivation continues until the beginning of a new cycle when the fluid is once again automatically made available at the individual dispensing units.
    Keywords: INSTRUMENTATION AND PHOTOGRAPHY
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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