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  • 1
    Digitale Medien
    Digitale Medien
    N1 and P2 of frequent and rare event-related potentials show effects and after-effects of the attended target in the oddball-paradigm
    Amsterdam : Elsevier
    International Journal of Psychophysiology 9 (1990), S. 293-301 
    Details
    ISSN: 0167-8760
    Schlagwort(e): Attention ; Event-related potential ; Habituation ; N1 ; Oddball paradigm ; P2 ; Serial order of frequent stimulus ; Spatial ERP analysis
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Medizin , Psychologie
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-8760(90)90061-H
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Cryopreservation of encapsulated shoot primordia induced in horseradish (Armoracia rusticana) hairy root cultures (1997)
    Springer
    Plant cell reports 16 (1997), S. 469-473 
    Details
    ISSN: 1432-203X
    Schlagwort(e): Cryopreservation ; Encapsulation-dehydration ; Encapsulation-vitrification ; Hairy roots ; Horseradish shoot primordia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Shoot primordia induced inArmoracia rusticana Gaertn. Mey. et Scherb. (horseradish) hairy root cultures were successfully cryopreserved by two cryogenic procedures. Encapsulated shoot primordia were precultured on solidified Murashige-Skoog medium supplemented with 0.5M sucrose for 1 day and then dehydrated with a highly concentrated vitrification solution (PVS2) for 4 h at 0°C prior to a plunge into liquid nitrogen. The survival rate of encapsulated vitrified primordia amounted to 69%. In a revised encapsulation-dehydration technique, the encapsulated shoot primordia were precultured with a mixture of 0.5M sucrose and 1M or 1.5M glycerol for 1 day to induce dehydration tolerance and then subjected to air-drying prior to a plunge into liquid nitrogen. The survival rate of encapsulated dried primordia was more than 90%, and the revived primordia produced shoots within 2 weeks after plating. A long-term preservation of shoot primordia was also achieved by the technique. Thus, this revised encapsulation-dehydration technique appears promising as a routine method for the cryopreservation of shoot primordia of hairy roots.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01092768
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Abnormal information processing in dementia of Alzheimer type. A study using the event-related potential's field (2000)
    Springer
    European archives of psychiatry and clinical neuroscience 250 (2000), S. 152-155 
    Details
    ISSN: 1433-8491
    Schlagwort(e): Key words Event related potentials (ERPs) dementia of Alzheimer type (DAT) ; Attention
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Electrical field changes of event-related potentials (ERPs) were investigated in 26 patients with dementia of Alzheimer's type (DAT) and 12 age-matched normal subjects. The patients were assessed with the Clinical Dementia Rating and Mini-Mental State. Each patient selected had only mild to moderate mental disability. Auditory oddball stimulation was presented at 1.5 s intervals and 1000 Hz for the nontarget and 2000 Hz for the target tones, both at 85 dB. The target tones were 20% of all the tones. The reference-independent data (latency, global field power: GFP, dissimilarity index: DISS and location of centroids) were obtained and analyzed for each ERP component. The momentary electric strength or ‘hilliness’ of the ERPs landscape was indicated by GFP. The patients showed prolonged latencies and decreased P300 GFP amplitudes and of N100 GFP. These findings suggest that the abnormal electrical field of ERP may reflect abnormal information processing following the attentional process for target stimuli in DAT patients.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004060070033
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Cryopreservation of encapsulated shoot primordia induced in horseradish (Armoracia rusticana) hairy root cultures (1997)
    Springer
    Plant cell reports 16 (1997), S. 469-473 
    Details
    ISSN: 1432-203X
    Schlagwort(e): Key words Cryopreservation ; Encapsulation-dehydration ; Encapsulation-vitrification ; Hairy roots ; Horseradish shoot primordia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Shoot primordia induced in Armoracia rusticana Gaertn. Mey. et Scherb. (horseradish) hairy root cultures were successfully cryopreserved by two cryogenic procedures. Encapsulated shoot primordia were precultured on solidified Murashige-Skoog medium supplemented with 0.5 M sucrose for 1 day and then dehydrated with a highly concentrated vitrification solution (PVS2) for 4 h at 0°C prior to a plunge into liquid nitrogen. The survival rate of encapsulated vitrified primordia amounted to 69%. In a revised encapsulation-dehydration technique, the encapsulated shoot primordia were precultured with a mixture of 0.5 M sucrose and 1 M or 1.5 M glycerol for 1 day to induce dehydration tolerance and then subjected to air-drying prior to a plunge into liquid nitrogen. The survival rate of encapsulated dried primordia was more than 90%, and the revived primordia produced shoots within 2 weeks after plating. A long-term preservation of shoot primordia was also achieved by the technique. Thus, this revised encapsulation-dehydration technique appears promising as a routine method for the cryopreservation of shoot primordia of hairy roots.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01092768
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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