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  • 1
    Electronic Resource
    Electronic Resource
    Effects of methylphenidate on learning a ‘beginning reading vocabulary’ by normal adults (1980)
    Springer
    Psychopharmacology 69 (1980), S. 69-72 
    Details
    ISSN: 1432-2072
    Keywords: Methylphenidate ; Psychostimulants ; Adult learning ; Reading instruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects of methylphenidate on reading was studied by having nine adults learn a beginning vocabulary of 96 Chinese characters under placebo and 5 mg and 10 mg methylphenidate by two teaching methods which differed in the rate at which new items were introduced for practice. Using lists composed of 12 characters and their English equivalents; all items were presented prior to the start of practice trials (simultaneous method), or each item was introduced only as the subject practiced items previously presented (progressive method). Learning performance was analyzed in terms of total errors and errors made at two criterion stages in list acquisition. Overall performance was significantly facilitated by the low (5 mg) dose of methylphenidate, but only with the simultaneous method. Significant drug effects were also obtained at criterion stages which were associated with high error rates. It was concluded that drug effects are likely to be most pronounced in difficult learning situations and that dosage appears to be an important variable for consideration in further studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00426524
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Calcitonin immunoreactive cells in prostate gland and cloacal derived tissues (1986)
    Springer
    Virchows Archiv 409 (1986), S. 523-533 
    Details
    ISSN: 1432-2307
    Keywords: Prostate ; Anal canal ; Urethra ; Calcitonin cells ; Prostatic adenocarcinomas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Calcitonin- and serotonin-storing cells have been immunocharacterized in prostate gland, urethra, urinary bladder and anal canal. In addition, a few hCG and somatostatin immunoreactive cells have been detected in prostate gland. All these cells were dispersed throughout the epithelial lining. In the anal canal, calcitonin cells were exclusively confined to the anal ducts and anal transitional zone epithelium. Calcitonin and serotonin cells were seen in some examples of prostatic adenocarcinoma. Combined techniques most often showed coexistence of calcitonin and serotonin immunoreactivities in the same endocrine cell. hCG immunoreactive cells corresponded to a subpopulation of serotonin-, calcitonin-storing cells. Calcitonin and serotonin cells were present in most organs which originated from the cloaca. In this territory, this distinctive endocrine pattern could be regarded as an excellent marker of cloacal derived tissues. These tissues constitute an additional site for extrathyroid C-cells. It is likely that calcitonin cells are a component of some prostatic adenocarcinomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00705422
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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