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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Nervenarzt 69 (1998), S. 543-556 
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Hyperkinetisches Syndrom beim Erwachsenen ; Aufmerksamkeitsdefizit-/Hyperaktivitätsstörung ; Methylphenidat ; Pemolin ; Key words Hyperkinetic syndrome ; Attention deficit ; Hyperactivity ; Impulsivity in adults
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The clinical picture of adult hyperkinetic syndrome (HKS) or attention deficit/hyperactivity disorder is nearly unknown in Germany. It can be estimated, that approximately one third of affected children also show symptoms as adults. In the combined type of the syndrome symptoms of inattention as well as of hyperactivity and impulsivity are present, a predominantly inattentive or hyperactive-impulsive type is possible. Retrospective diagnosis of HKS in childhood can be difficult. Disorganization, emotional disturbances and stress intolerance are common in adults with HKS as well as residual symptoms of learning disorders like dyslexia, dyscalculia and dysgraphia. In differential diagnosis especially affective, anxiety and antisocial personality disorders have to be considered, for which on the other side a frequent comorbidity with HKS is known. There is strong evidence for genetic transmission. Neurobiological findings revealed dysregulation of neurotransmitters. For treatment stimulants as pemoline and methamphetamin are effective, in addition tricyclic antidepressants or beta blockers; positive effects are probable for moclobemide, bupropion, fluoxetine and venlafaxine.
    Notes: Zusammenfassung Das Krankheitsbild des hyperkinetischen Syndroms (HKS) oder der Aufmerksamkeitsdefizit-/Hyperaktivitätsstörung beim Erwachsenen ist im deutschsprachigen Raum wenig bekannt. Es ist davon auszugehen, daß etwa ein Drittel der betroffenen Kinder Symptome auch im Erwachsenenalter zeigt. Beim Mischtypus finden sich sowohl Konzentrationsprobleme als auch motorische Unruhe und Impulsivität, deutliche Betonung der einen (vorwiegend unaufmerksamer Typus) oder anderen (vorwiegend hyperaktiv-impulsiver Typus) Symptomengruppe ist möglich. Die retrospektive Diagnose eines HKS im Kindesalter kann schwierig sein. Desorganisation im beruflichen und privaten Bereich, emotionale Störungen und Streßintoleranz sind bei Erwachsenen mit HKS häufig, Symptome von oft mit dem HKS vergesellschafteten Teilleistungsstörungen wie Lese- und Rechtschreibschwäche, Dysgraphie und Dyskalkulie können persistieren. Differentialdiagnostisch sind v. a. affektive Störungen, Angststörungen und dissoziale Entwicklungsstörungen abzugrenzen, wobei eine Komorbidität des HKS mit diesen Krankheitsbildern vorkommen kann. Ätiologisch ist eine genetische Ursache wahrscheinlich. Pathogenetisch ergeben sich Hinweise auf eine komplexe Dysregulation verschiedener Neurotransmitter. Therapeutisch können Pemolin und Methylphenidat, außerdem trizyklische Antidepressiva oder Betarezeptorenblocker eingesetzt werden; günstige Effekte sind wahrscheinlich für Moclobemid, Bupropion, Fluoxetin und Venlafaxin.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta ethologica 2 (1999), S. 29-34 
    ISSN: 1437-9546
    Keywords: Key words Gasterosteus aculeatus ; Foraging behaviour ; Refuge use ; Weight change
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Refuge use provides a good model for the study of trade-offs between the benefits of predator avoidance and the costs of lost feeding opportunities. We manipulated the latter costs by subjecting similar-sized three-spine sticklebacks to 2 days of food deprivation followed by a 2-day re-feeding period and recorded associated changes in body weight and refuge use. Food deprivation resulted in a decrease and re-feeding in an increase in the duration of refuge use by fish. Emergence times of fish from the refuge were extremely variable (with a ratio of 1:127 between the shortest and the longest ones) but individual ranks were highly consistent between different days of testing, suggesting that emergence times were individually characteristic. Percentage weight change of fish in response to the experimental treatments also showed a high level of inter-individual variation ranging from 0–17%. A significant positive correlation was found between the percentage weight lost and the percentage decrease in emergence time from a refuge after food deprivation and similarly between the percentage weight gained and the percentage increase in refuge use after re-feeding. The relationship between energy turnover and behavioural strategies is discussed.
    Type of Medium: Electronic Resource
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