Abstract:
: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 of the gravity level. Up-down oscillations induced relatively symmetric cyclovergence (0.6-2.2 degrees peak-to-peak). Eyes intorted/extorted for higher/lower effective gravity. The phase of this modulation was small relative to chair acceleration. We contrast this behaviour to the dynamics of cycloversion in response to interaural acceleration, which shows a considerably larger phase lag. This strikingly different dynamics suggest a different processing of otolith signals during interaural and longitudinal stimulation.
journal_name
Prog Brain Resjournal_title
Progress in brain researchauthors
Olasagasti I,Bockisch CJ,Zee DS,Straumann Ddoi
10.1016/S0079-6123(08)00646-8subject
Has Abstractpub_date
2008-01-01 00:00:00pages
319-22eissn
0079-6123issn
1875-7855pii
S0079-6123(08)00646-8journal_volume
171pub_type
杂志文章abstract::PTSD arises by definition as a direct consequence of the experience of an acute severe stressor. The formation of traumatic memory and its extinction, sympathetic and adrenocortical stress systems activity in relation to individual vulnerability form the core of animal models for PTSD. ...
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