oculogravic illusion

An illusion caused by linear acceleration/deceleration, which gives a feeling of a false climb/descent, respectively. It is caused by the pilot's misinterpreting the information from the otolith organs. When the aircraft accelerates, on increasing engine power or reducing drag, the inertial force resulting from the increase in forward speed combines with the force of gravity to produce a resultant, which is inclined backward. (The otolith organ—the utricle—is shifted to the rear just as if the head were tilted backward; it, thus, sends erroneous signals to the brain that the head is tilting backward. This causes the pilot to sense a nose-high attitude.) If this resultant is used as a vertical reference, then the pilot will feel as if he or she and the aircraft are in a nose-up attitude. The pilot may try to correct this by pushing the stick forward. Conversely, when an aircraft decelerates, on decreasing engine power or by extending air brakes, the resultant vector swings forward and the pilot perceives that the aircraft has pitched down. The situation is unlikely to occur if either the visual clues are available or the pilot cross-checks the instruments. Also known as an agravic illusion.

单词	oculogravic illusion
释义	oculogravic illusion oculogravic illusion An illusion caused by linear acceleration/deceleration, which gives a feeling of a false climb/descent, respectively. It is caused by the pilot's misinterpreting the information from the otolith organs. When the aircraft accelerates, on increasing engine power or reducing drag, the inertial force resulting from the increase in forward speed combines with the force of gravity to produce a resultant, which is inclined backward. (The otolith organ—the utricle—is shifted to the rear just as if the head were tilted backward; it, thus, sends erroneous signals to the brain that the head is tilting backward. This causes the pilot to sense a nose-high attitude.) If this resultant is used as a vertical reference, then the pilot will feel as if he or she and the aircraft are in a nose-up attitude. The pilot may try to correct this by pushing the stick forward. Conversely, when an aircraft decelerates, on decreasing engine power or by extending air brakes, the resultant vector swings forward and the pilot perceives that the aircraft has pitched down. The situation is unlikely to occur if either the visual clues are available or the pilot cross-checks the instruments. Also known as an agravic illusion. oculogravic illusion oc·u·lo·grav·ic il·lu·sion apparent movement of the visual field when the body is subjected to acceleration; due to gravity.
随便看	optical data transmission optical dedicated protection ring optical deep level transient spectroscopy optical deep space network optical defocus optical demand and facility system optical demultiplexing unit optical densities optical density optical density at 500 nm optical density at 600 nm optical density at 650 nm optical density of the oxalate extract optical density readings at 492 nm optical density unit optical depth optical design verification test optical detection and ranging optical detection of cyclotron resonance optical detection of magnetic resonance optical detector optical detectors optical detector subsystem optical device optical device drive

oculogravic illusion

oculogravic illusion

oculogravic illusion

oc·u·lo·grav·ic il·lu·sion