Role of gravitation-dependent systems in visual tracing
Kornilova, L.N.
Rossiiskii Fiziologicheskii Zhurnal Imeni I.M. Sechenova 89(3): 280-291
2003
ISSN/ISBN: 0869-8139 PMID: 12968521 Document Number: 553655
In 31 astronauts under conditions of free falling, when the visual functions proper were preserved, the precision and speedy parameters of all the forms of visual tracing (saccades, smooth tracing) became worse, and in a number of cases a complete disintegration of the smooth tracing reflex occurred as well as a 2-fold and greater enhancement of the time for fixing the stare at a target. In the beginning of adaptation to altered gravitation conditions, a transition of the smooth visual tracing into the strategy of saccadic approximation, occurs. These disorders were shown to be due to a vestibular deprivation.