Search Results - (Author, Cooperation:R. Roll)
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1Latest Papers from Table of Contents or Articles in PressF. Goesmann ; H. Rosenbauer ; J. H. Bredehoft ; M. Cabane ; P. Ehrenfreund ; T. Gautier ; C. Giri ; H. Kruger ; L. Le Roy ; A. J. MacDermott ; S. McKenna-Lawlor ; U. J. Meierhenrich ; G. M. Munoz Caro ; F. Raulin ; R. Roll ; A. Steele ; H. Steininger ; R. Sternberg ; C. Szopa ; W. Thiemann ; S. Ulamec
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-08-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressJ. Biele ; S. Ulamec ; M. Maibaum ; R. Roll ; L. Witte ; E. Jurado ; P. Munoz ; W. Arnold ; H. U. Auster ; C. Casas ; C. Faber ; C. Fantinati ; F. Finke ; H. H. Fischer ; K. Geurts ; C. Guttler ; P. Heinisch ; A. Herique ; S. Hviid ; G. Kargl ; M. Knapmeyer ; J. Knollenberg ; W. Kofman ; N. Komle ; E. Kuhrt ; V. Lommatsch ; S. Mottola ; R. Pardo de Santayana ; E. Remetean ; F. Scholten ; K. J. Seidensticker ; H. Sierks ; T. Spohn
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-08-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Articles: DFG German National LicensesStaff View
ISSN: 0015-6264Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineProcess Engineering, Biotechnology, Nutrition TechnologyType of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 0022-1996Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0167-9457Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineSports ScienceType of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0167-9457Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineSports ScienceType of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0304-405XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 1434-6036Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract Copper influences the electrical and optical properties of zinc oxide to a high degree. Previously this has been explained within the frame of a model assuming Cu++ ions to be substitutional for divalent zinc. The observation of additional signals in the Electron Spin Resonance spectrum, however, proved this assumption to be wrong. Satisfying quantitative agreement with experiment is obtained assuming neutral copper atoms at an interstitial site having 3d9 4s2 electron configuration and a2D3/2 ground state. The infrared absorption bands as well as the spin lattice relaxation mechanism give further confirmation of Cu i 0 .Type of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1434-6036Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract Electron paramagnetic resonance (EPR) experiments of light activated Ge, Sn and Pb impurities in wurtzite type CdSe crystals are presented. These2S1/2 centres exhibit a large hyperfine structure which shows a variation with temperature. 25 shells of neighbour nuclei are resolved for CdSe∶Sn by means of the Electron nuclear double resonance (ENDOR) technique. All shells belong to one of three distinct shell symmetries of the lattice thus confirming a high symmetry defect. Additional Sn respectively Ge related spectra are described and interpreted as complex centres correlated with lithium.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesBeitrag zur Frage des Einflusses einer epidermalen Sensibilisierung auf die experimentelle AcanthoseStaff View
ISSN: 1432-069XSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Zusammenfassung 1. Bei 45 Meerschweinchen wurde in drei Versuchsserien der Einfluß einer 0,1%igen, einer 0,4%igen und einer 0,6%igen Dinitrochlorbenzolsalbe anhand des Acanthose-Testes vor und nach Eintritt einer epidermalen Sensibilisierung untersucht. 2. Als Salbengrundlage diente das nur eine geringe Acanthose verursachende Silikon. Die Acanthose wurde quantitativ anhand der Epidermisbreite, der Zahl der Zell-Lagen und der Mitoserate (Dustinsche Reaktion nach Colchicinblockade) erfaßt. 3. Durch die epidermale Sensibilisierung ist keine wesentliche Veränderung anhand der Epidermisbreite und der Zell-Zahl festzustellen. Auch die Mitoserate bleibt bei 0,1%iger DNCB-Salbe ebenfalls unverändert. Unter dem Einfluß einer 0,4%igen und 0,6%igen DNCB-Salbe sinkt die Mitoserate bei den sensibilisierten Tieren gegenüber den nichtsensibilisierten. 4. Für den Acanthose-Test, der zum Nachweis einer klinisch unterschwelligen toxischen Reizwirkung geeignet ist, sind diese Ergebnisse insofern von Bedeutung, als dieser Test auf eine epidermale (ekzematöse) Sensibilisierung offenbar nicht anspricht.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 0167-2231Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0164-0704Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EconomicsType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 1432-1106Keywords: Body reference ; Extraocular proprioception ; Gaze direction ; Neck proprioception ; Vibration ; Visuomanual pointing ; Visual illusion ; HumanSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Summary The egocentric localization of objects in extrapersonal space requires that the retinal and extraretinal signals specifying the gaze direction be simultaneously processed. The question as to whether the extraretinal signal is of central or peripheral origin is still a matter of controversy, however. Three experiments were carried out to investigate the following hypotheses: 1) that the proprioceptive feedback originating in eye and neck muscles might provide the CNS with some indication about the gaze direction; and 2) that the retinal and proprioceptive extraretinal inputs might be jointly processed depending on whether they are of monocular or binocular origin. Application of low amplitude mechanical vibrations to either the extraocular or neck muscles (or both) of a subject looking monocularly at a small luminous target in darkness resulted in an illusory movement of the target, the direction of which depended on which muscle was stimulated. A slow upward target displacement occurred on vibrating the eye inferior rectus or the neck sterno-cleido-mastoidus muscles, whereas a downward shift was induced when the dorsal neck muscles (trapezius and splenius) were vibrated. The extent of the perceptual effects reported by subjects was measured in an open-loop pointing task in which they were asked to point at the perceived position of the target. These results extend to visually-oriented behavior the role of extraocular and neck proprioceptive inputs previously described in the case of postural regulation, since they clearly show that these messages contribute to specifying the gaze direction. This suggests that the extraretinal signal might include a proprioceptive component. The proposition that a directional body reference frame may be based on the common processing of various proprioceptive feedbacks is discussed.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesRoll, R. ; Gilhodes, J. C. ; Roll, J. P. ; Popov, K. ; Charade, O. ; Gurfinkel, V.
Springer
Published 1998Staff ViewISSN: 1432-1106Keywords: Key words Microgravity ; Muscle proprioception ; Posture ; Kinesthesia ; ManSource: Springer Online Journal Archives 1860-2000Topics: MedicineNotes: Abstract The ”illusions” experiment carried out on five astronauts during the last two French-Russian flights (Antarès in 1992 and Altaı˙˙r in 1993) and in the Russian Post-Antarès mission (1993) was designed to investigate the adaptive changes in human proprioceptive functions occurring in weightlessness at both the sensorimotor and cognitive levels, focusing on two kinds of responses: (1) whole-body postural reflexes, and (2) whole-body movement perception. These kinesthetic and motor responses were induced using the tendon-vibration method, which is known to selectively activate the proprioceptive muscular sensory channel and to elicit either motor reactions or illusory movement sensations. Vibration (70 Hz) was therefore applied to ankle (soleus or tibialis) and neck (splenii) muscles. The subject’s whole-body motor responses were analyzed from EMG and goniometric recordings. The perceived vibration-induced kinesthetic sensations were mimicked by the subjects with a joystick. The main results show that a parallel in-flight attenuation of the vibration-induced postural responses and kinesthetic illusions occurred, which seems to indicate that the proprioceptive system adapts to the microgravity context, where standing posture and conscious coding of anteroposterior body movements are no longer relevant. The same sensory messages are used at the same time in different sensory motor loops and in the coding of newly developed behavioral movements under microgravity. These results suggest that the human proprioceptive system has a high degree of adaptive functional plasticity, at least as far as the perceptualand motor aspects are concerned.Type of Medium: Electronic ResourceURL: