Sudden sensorineural hearing loss (SSNHL) is a syndrome characterized by rapid progression of hearing impairment over seconds to days.
[[12]](#references). [[9]](#references). [[8]](#references). [[3]](#references). [9](#figure-anchor-422543)). [[2]](#references). [[11,12]](#references). The reported prevalence is 0.05-0.06%, and the vertebrobasilar circulation is the most frequently affected; in contrast, the anterior cerebral circulation is rarely involved [[5]](#references). [4](#figure-anchor-387324)), secondary to brain trauma caused by repeat syncopal events. Additionally, the nystagmus changed direction during positional maneuvers (Dix-Hallpike, hyperextension, and roll test) in a direction that was different from the expected one of a patient with benign paroxysmal postural vertigo. There is no universally accepted definition, but it is frequently defined as a sensorineural hearing loss of 30 decibels (dB) or more in three or more consecutive frequencies, occurring in less than 72 hours While no universally accepted definition exists, it is often defined as a sensorineural hearing loss of 30 decilbles (dB) or more across at least three contiguous frequencies, occurring within 72 hours.
Alfred Hitchcock invented a new type of shot for the opening scene of Vertigo, one which has been taken up by other master filmmakers and used to ...
[Martin Scorsese](https://www.youtube.com/watch?v=StcvV1pZXz4), who has spoken highly of ["Vertigo"](https://www.youtube.com/watch?v=uqIOQK1L6QE) many times, used a slower-paced dolly zoom in "Goodfellas." Scorsese and DP Michael Ballhaus start with a center-framed medium-wide shot of the two men sitting on opposite ends of the booth, then slowly zoom in as the dolly tracks out inch by inch, creating a subtle "Vertigo effect" that lasts over 30 seconds. ](https://www.slashfilm.com/900783/the-10-greatest-jaws-moments/) Here, it comes during the second shark attack of the movie, when young Alex Kintner (Jeffrey Voorhees) is killed a few yards from shore. While this camera trick is most accurately called a "dolly zoom," it's also sometimes called the "Vertigo effect" in a nod to its origin. When Chief Brody (Roy Scheider) sees the attack, the scene cuts to a medium close-up of him sitting down. Why can't we make a miniature of the stairway and lay it on its side, then take our shot by pulling away from it? That doesn't mean the shot wasn't easy to create; it took some creative thinking and a pretty penny to pull off the Vertigo effect. ](https://www.slashfilm.com/761251/how-alfred-hitchcock-subtly-makes-you-feel-uneasy-in-rebecca/) As [Hitchcock](https://www.slashfilm.com/587316/alfred-hitchcocks-15-best-films-ranked/) explained: As a result, the subject of the shot remained in focus while the background of the frame distorts. When I asked why, they said, 'Because to put the camera at the top of the stairs we have to have a big apparatus to lift it, counterweight it, and hold it up in space.' I said, 'There are no characters in this scene; it's simply a viewpoint. I always remember one night at the Chelsea Arts Ball at Albert Hall in London when I got terribly drunk and I had the sensation that everything was going far away from me. The effect was achieved by mounting a camera on a dolly track and then zooming in on the lens while moving the dolly backward.