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author = "Straumann, D"
<< < 1 2 3 4 > >>

Found 40 documents, displaying page 2 of 4

Accuracy of the bedside head impulse test in detecting vestibular hypofunction

Author(s) : Jorns‐Häderli, M , Straumann, D , Palla, A
Description :
Repository : Europe PubMed Central
Language(s) : English

Mitochondrial diseases represent a risk factor for valproate-induced fulminant liver failure

Author(s) : Krahenbuhl, S , Brandner, S , Kleinle, S , Liechti, S , Straumann, D
Description : We report on 3 siblings (2 females and 1 male) with chronic progressive external ophthalmoplegia (CPEO), compatible with inherited mitochondrial cytopathy. The younger of the two sisters died at the age of 37 due to progressive respiratory failure. The older one presented with a status epilepticus a...
Repository : UCL Eprints
Language(s) : Undetermined

Dynamic aspects of trochlear nerve palsy

Author(s) : Straumann, D , Bockisch, C J , Weber, K P
Description : Trochlear nerve palsy leads to kinematic aberrations of both the paretic and the unaffected eye. During dynamic head roll, the rotation axis of the covered paretic or unaffected eye deviates inward, while the rotation axis of the viewing paretic or unaffected eye aligns with the line of sight; this ...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Do humans show velocity-storage in the vertical rVOR?

Author(s) : Bertolini, G , Bockisch, C J , Straumann, D , Zee, D S , Ramat, S
Description : To investigate the contribution of the vestibular velocity-storage mechanism (VSM) to the vertical rotational vestibulo-ocular reflex (rVOR) we recorded eye movements evoked by off-vertical axis rotation (OVAR) using whole-body constant-velocity pitch rotations about an earth-horizontal, interaural ...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Cyclovergence evoked by up-down acceleration along longitudinal axis in humans

Author(s) : Olasagasti, I , Bockisch, C J , Zee, D S , Straumann, D
Description : We present results of a study of torsional eye movements evoked by earth-vertical accelerations along the subject's longitudinal axis. The earth-vertical stimulus leads to a gravito-inertial acceleration vector that changes magnitude but not direction. It can therefore be viewed as a dynamic change ...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Modulation of saccade curvature by ocular counterroll

Author(s) : Weber, K P , Bockisch, C J , Olasagasti, M I , Straumann, D
Description : PURPOSE: On close inspection, most saccadic trajectories are not straight, but curve slightly, i.e. they are not single-axis ocular rotations. We asked whether saccade curvatures are systematically influenced by static ocular counterroll (OCR). METHODS: OCR was elicited by static whole-body roll pos...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Gravity-dependence of subjective visual vertical variability

Author(s) : Tarnutzer, A A , Bockisch, C J , Straumann, D , Olasagasti, I
Description : The brain integrates sensory input from the otolith organs, the semicircular canals, and the somatosensory and visual systems to determine self-orientation relative to gravity. Only the otoliths directly sense the gravito-inertial force vector and therefore provide the major input for perceiving sta...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Up-down asymmetry of cerebellar activation during vertical pursuit eye movements

Author(s) : Glasauer, S , Stephan, T , Kalla, R , Marti, S , Straumann, D
Description : Animal experiments have demonstrated that the vast majority of vertical gaze-velocity Purkinje cells in the cerebellar floccular lobe, whose firing rate is modulated during vertical smooth pursuit eye movements, show a preference for downward pursuit. Here we validate the functional vertical asymmet...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Precision and accuracy of the subjective haptic vertical in the roll plane

Author(s) : Schuler, J R , Bockisch, C J , Straumann, D , Tarnutzer, A A
Description : ABSTRACT: BACKGROUND: When roll-tilted, the subjective visual vertical (SVV) deviates up to 40degrees from earth-vertical and trial-to-trial variability increases with head roll. Imperfections in the central processing of visual information were postulated to explain these roll-angle dependent error...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Geometrical considerations on canal-otolith interactions during OVAR and Bayesian modelling

Author(s) : Laurens, J , Hess, B J M , Straumann, D
Description : During constant-velocity rotation about a tilted axis (OVAR), the VOR and the rotation perception last indefinitely, but show a striking dependency on tilt angle. We show that, during OVAR, a variety of motions can account for the head motion relative to gravity. Some of these are in conflict with c...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English
<< < 1 2 3 4 > >>

Found 40 documents, displaying page 2 of 4