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Mantrap (access control) A mantrap, security mantrap portal, airlock, sally port or access control vestibule is a physical security access control system comprising a small space with two sets of interlocking doors, such that the first set of doors must close before the second set opens. [1] [2] [3] Airlocks have a very similar design, allowing ...
A sailor checks an identification card (ID) before allowing a vehicle to enter a military installation. In physical security and information security, access control ( AC) is the selective restriction of access to a place or other resource, while access management describes the process. The act of accessing may mean consuming, entering, or ...
When you have a vestibular disorder, something is interfering with your body's balance system. It could be caused by disease or an injury, but the signals between your inner ear and brain are no ...
Pulled to one direction. Other symptoms that may accompany vertigo include: Feeling nauseated. Vomiting. Abnormal or jerking eye movements (nystagmus) Headache. Sweating. Ringing in the ears or ...
Neural pathway of vestibular/balance system. The vestibular system, in vertebrates, is a sensory system that creates the sense of balance and spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of the inner ear in most mammals .
Sensory structures within the vestibule and semicircular canals control this. The vestibule contains two sacs, the utricle and the saccule, and each contains a sensory patch called a macula.
Before you get dizzy, usually one of your ears feels full or stuffy, or hurts. During an attack, one or both ears may ring, or you might lose hearing. This doesn't usually happen with a vestibular ...
The main symptom of a vestibular migraine is an episode of vertigo. Usually it happens spontaneously. You may also experience symptoms including: feeling imbalanced. motion sickness caused by ...
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