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author = "Bockisch, C J"
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Found 15 documents, displaying page 1 of 2

Neurophysiology : vertigo in MRI machines

Author(s) : Straumann, D , Bockisch, C J
Description : Subjects of brain-imaging studies often report experiencing vertigo while in MRI machines; a new study shows that the magnetic field stimulates the vestibular sensors in the inner ear by a Lorentz force.
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Looking for the answer: the mind's eye in number space

Author(s) : Loetscher, T , Bockisch, C J , Brugger, P
Description : Human subjects' answer to questions like "what number is halfway between 2 and 8" provides insights into spatial attention mechanisms involved in numerical processing. Here we show that mental numerical bisections are accompanied by a systematic pattern of horizontal eye movements: processing of a l...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

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

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

Antihysteresis of perceived longitudinal body axis during continuous quasi-static whole-body rotation in the earth-vertical roll plane

Author(s) : Tatalias, M , Bockisch, C J , Bertolini, G , Straumann, D , Palla, A
Description : Estimation of subjective whole-body tilt in stationary roll positions after rapid rotations shows hysteresis. We asked whether this phenomenon is also present during continuous quasi-static whole-body rotation and whether gravitational cues are a major contributing factor. Using a motorized turntabl...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English

Dynamic cyclovergence during vertical translation in humans

Author(s) : Olasagasti, I , Bockisch, C J , Zee, D S , Straumann, D
Description : When humans are accelerated along the body vertical, the right and left eyes show oppositely directed torsional modulation (cyclovergence). The origin of this paradoxical response is unknown. We studied cyclovergence during linear sinusoidal vertical motion in healthy humans. A small head-fixed visu...
Repository : Zurich Open Repository and Archive (ZORA)
Language(s) : English
1 2 > >>

Found 15 documents, displaying page 1 of 2