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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2004-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tobena, Adolf -- New York, N.Y. -- Science. 2004 Apr 2;304(5667):47-9; author reply 47-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15060306" target="_blank"〉PubMed〈/a〉
    Keywords: *Behavior ; Female ; Humans ; Islam ; Male ; *Personality ; Religion ; *Suicide ; Temperament ; *Terrorism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    ISSN: 1573-3297
    Keywords: Roman high- and low-avoidance rats ; tunnel maze ; emotionality ; correlational analysis ; factor analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Two hundred forty 30-day-old Roman high- and low-avoidance (RHA/Verh and RLA/Verh) rats (divided equally by line and gender) which had received several peri- and/or postnatal treatments, forming two factorial [line x sex x treatment(s)] experimental designs, were tested in a hexagonal tunnel maze including a brightly illuminated central arena. The present study reports the results of correlational and factorial (principal-components) analyses performed on the data from those two experimental constituencies. The purpose of the study was to evaluate the validity of the hexagonal tunnel maze for testing emotionality, and therefore, the following measures were included in the analysis: entries into the central illuminated arena, total activity during testing, defecation during testing, and defecation during handling and weighing after testing. An overall pattern of negative correlations (or opposite loadings in the principal-components analyses) between defecation (especially during maze testing) and entries into the illuminated center and activity was found, thus giving support to the validity of entries into the illuminated center as being indicative of emotional reactivity.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-3297
    Keywords: Roman/Verh inbred strains ; exploratory activity ; emotionality ; tunnel maze ; conditioned fear
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract An inbreeding program has been carried out with the Swiss sublines of Roman high- and low-avoidance rats since 1993. The present study reports the first experiments conducted with young animals of those inbred strains (RHA-I/Verh and RLA-I/Verh, respectively) from the sixth and seventh inbreeding generations. The results confirmed expected behavioral profiles. Compared to the RHA-I/Verh strain, RLA-I/Verh rats showed decreased entries into the illuminated central arena of an hexagonal tunnel maze, as well as decreased spontaneous locomotor activity and increased defecations, in two independent experiments. Young RLA-I/Verh females explored less than did their RHA-I/Verh counterparts during session 1 of a conditioned-fear experiment preceding shock administration, and in session 2 (conducted 24 h after the application of three footshocks), they showed greater conditioned behavioral inhibition (i.e., reduced amount of rearing), as well as higher defecation scores, than did RHA-I/Verh females.
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  • 4
    ISSN: 1573-3297
    Keywords: Genetic selection ; emotionality ; anxiety ; amygdala ; acoustic startle responses ; cohort removal ; isolation stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Male and female rats of the inbred Roman/Verh strains, which have been psychogenetically selected and bred for good (RHA-I/Verh) and extremely poor (RLA-I/Verh) two-way avoidance acquisition, were evaluated in an acoustic startle response test. One half of the rats of each strain and sex were previously subjected to 30 min of isolation by removal of their cage partners (“cohort removal”). During the testing session each animal received 40 acoustic stimuli at interstimulus intervals of 30 seconds. The hyperemotional RLA-I/Verh rats (especially the males) showed stronger acoustic startle responses than did their RHA-I/Verh counterparts. Startle amplitudes of the RLA-I/Verh males were further enhanced by the stress of 30 min isolation, whereas cohort removal did not significantly affect startle response amplitudes in RHA-I/Verh rats of either sex or in females of the RLA-I/Verh strain.
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