Akinetopsia, also known as cerebral akinetopsia or motion blindness, is an extremely rare neuropsychological disorder in which a patient cannot perceive motion in their visual field, despite being able to see stationary objects without issue. For patients with akinetopsia, the world becomes devoid of motion. Most of what is known about akinetopsia was learned through the case study of one patient, LM. There is currently no effective treatment or cure for akinetopsia. Classification Akinetopsia is known as a neuropsychological disorder, because a change in brain structure (typically lesio...

Scuba diving is a form of underwater diving in which a diver uses a self contained underwater breathing apparatus (scuba) to breathe underwater. Unlike other modes of diving, which rely either on breath-hold or on air pumped from the surface, scuba divers carry their own source of breathing gas, (usually compressed air), allowing them greater freedom of movement than with an air line or diver's umbilical and longer underwater endurance than breath-hold. Scuba equipment may be open circuit, in which exhaled gas is exhausted to the surroundings, or closed or semi-closed circuit, in whic...

Scuba is an acronym for self-contained underwater breathing apparatus. It may also refer to: * Scuba diving, the use of a self-contained breathing set to stay underwater for periods of time * Scuba set, the equipment used to do SCUBA may refer to: * Submillimetre Common-User Bolometer Array, an instrument used on the James Clerk Maxwell Telescope * Scuba (musician)