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Perception of the visual horizontal in normal and labyrinthine defective subjects during prolonged rotation



Perception of the visual horizontal in normal and labyrinthine defective subjects during prolonged rotation



Us Nav Sch Aviat Med Res Rep 6001 1(116): 1-7



Five normal and 9 labyrinthine defective men were studied in a Slow Rotation Room which produced a change in resultant force of 20[degree] on them. The men faced in the direction of rotation and at 1 min. intervals set a luminous line to the perceived horizontal in darkness for 1 hour. The results for the normal men confirmed an earlier study showing no systematic change in the perception of the visual horizontal after an initial lag effect. In contrast, the labyrinthine defective men showed a smaller, rapid, and then a gradual change in the perception of the visual horizontal throughout the 1 hour of constant rotation. At the end of 1 hour there was no significant difference between the 2 groups. These results are discussed in terms of a differential weighting of the synergistic information available to the 2 groups.

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Accession: 025217763

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PMID: 5294801


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