They also make more money for investors. And, no, I didnât just repeat myself. At issue here is the distinction between a fundâs total return and its dollar-weighted return. The total return is the standard performance number you see on fund-company websites and in fund prospectuses.
Central vertigo is a more serious problem in the cerebellum (back part of the brain) or brain stem. Your doctor will evaluate your eye to look for abnormal jerking movements (nystagmus). The pattern of your eye movements may help to determine if the problem is peripheral or central.
Vertigo is the false sense that your surroundings are spinning or moving. With inner ear disorders, your brain receives signals from the inner ear that aren't consistent with what your eyes and sensory nerves are receiving. Vertigo is what results as your brain works to sort out the confusion. Benign paroxysmal positional vertigo (BPPV). This condition causes an intense and brief but false sense that you're spinning or moving. These episodes are triggered by a rapid change in head movement, such as when you turn over in bed, sit up or experience a blow to the head. BPPV is the most common cause of vertigo. Infection. A viral infection of the vestibular nerve, called vestibular neuritis, can cause intense, constant vertigo.