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  • 2000-2004  (1)
  • 1980-1984  (1)
  • hemispheric lateralization  (1)
  • rumen  (1)
  • 1
    Electronic Resource
    Electronic Resource
    In Vitro Metabolism of Fumonisin B1 by Ruminal Microflora (2000)
    Springer
    Veterinary research communications 24 (2000), S. 379-387 
    Details
    ISSN: 1573-7446
    Keywords: biodegradation ; fumonisin B1 ; metabolites ; microflora ; mycotoxin ; rumen ; short-chain fatty acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fumonisin B1 (FB1) is a mycotoxin produced by Fusarium moniliforme and F. proliferatum. Little is known of its metabolic fate after oral ingestion in ruminants, but these animals are reported to be tolerant towards FB1. The metabolism of this mycotoxin was evaluated following incubation (1 μg/ml) in ruminal fluid for up to 72 h, in the presence or absence of alfalfa as a substrate for microbial growth, using a model rumen (sealed flask, anaerobic conditions, exclusion of light, gentle agitation, 39°C). The decrease in FB1 concentration and the production of short-chain fatty acids were determined. FB1 had no effect on SCFA production. After 72 h incubation, FB1 depletion was 12% and 18% in samples with and without alfalfa, respectively. No hydrolysed metabolites (aminopolyols or aminopentol) were detected. These results indicate that FB1 is poorly metabolized in the rumen and suggest that such metabolism is not the cause of the tolerance to this toxin displayed by ruminants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006422200226
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Differential left hemisphere activation during the voluntary control of skin resistance level (1983)
    Springer
    Applied psychophysiology and biofeedback 8 (1983), S. 505-516 
    Details
    ISSN: 1573-3270
    Keywords: biofeedback ; hemispheric lateralization ; skin resistance level
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sixteen dextral subjects were presented auditory feedback (FBK) in the form of clicks, the frequency of which was inversely proportional to the surn of the skin resistance levels (SRLs) of the two hands. The FBK was presented in a two-ear changeover paradigm: FBK was presented for 10 minutes to one ear while a white noise masking stimulus was presented to the other; the ears of FBK and masking stimulus presentation were then reversed. Subjects were instructed to decrease the frequency of the clicking. An increase in the SRL of each hand was used as a measure of the activation of the contralateral hemisphere. Significant increases in right-hand SRL (on the order of 40% of baseline) were seen following FBK and obtained regardless of the ear to which FBK was presented, the order of FBK presentation, or the sex of the subjects. Also seen were small-magnitude changes in left-hand SRL, which were not statistically significant. These findings indicate that the left hemisphere was differentially active during acquisition of inhibitory control of SRL in dextrals receiving auditory FBK. Clinical implications of this finding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00998757
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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