Labyrinth

In Greek mythology, the Labyrinth (Greek λαβύρινθος labyrinthos) was an elaborate structure designed and built by the legendary artificer Daedalus for King Minos of Crete at Knossos. Its function was to hold the Minotaur eventually killed by the hero Theseus. Daedalus had so cunningly made the Labyrinth that he could barely escape it after he built it.

Although early Cretan coins occasionally exhibit branching (multicursal) patterns, the single-path (unicursal) seven-course "Classical" design without branching or dead ends became associated with the Labyrinth on coins as early as 430 BC, and similar non-branching patterns became widely used as visual representations of the Labyrinth – even though both logic and literary descriptions make it clear that the Minotaur was trapped in a complex branching maze. Even as the designs became more elaborate, visual depictions of the mythological Labyrinth from Roman times until the Renaissance are almost invariably unicursal. Branching mazes were reintroduced only when garden mazes became popular during the Renaissance.

Labyrinth (game)

Labyrinth is a game of physical skill consisting of a box with a maze on top with holes, and a steel marble. The object of the game is to try to tilt the playfield to guide the marble to the end of the maze, without letting it fall into any of the holes. Some versions of the game feature a suspended maze surface that rotates on two axes, each of which is controlled by a knob. Small handheld versions of the game are sold, with the box being completely closed with a transparent cover on top.

The game was developed by BRIO in Sweden and first released there in 1946. It was introduced to the United States by BRIO around 1950. Similar games are offered in the US by a number of companies, due to it never being properly copyrighted there (according to one such company).

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Bony labyrinth

The bony labyrinth (also osseous labyrinth or otic capsule) is the rigid, bony outer wall of the inner ear in the temporal bone. It consists of three parts: the vestibule, semicircular canals, and cochlea. These are cavities hollowed out of the substance of the bone, and lined by periosteum. They contain a clear fluid, the perilymph, in which the membranous labyrinth is situated.

A fracture classification system in which temporal bone fractures detected on CT are delineated based on disruption of the otic capsule has been found to be predictive for complications of temporal bone trauma such as facial nerve injury, sensorineural deafness and cerebrospinal fluid otorrhea. On radiographic images, the otic capsule is the most dense portion of the temporal bone.

In otospongiosis, a leading cause of adult-onset hearing loss, the otic capsule is exclusively affected. This area normally undergoes no remodeling in adult life, and is extremely dense. With otospongiosis, the normally dense enchondral bone is replaced by haversian bone, a spongy and vascular matrix that results in sensorineural hearing loss due to compromise of the conductive capacity of the inner ear ossicles. This results in hypodensity on CT, with the portion first affected usually being the fissula ante fenestram.