Effects of motion paradigm on human perception of tilt and translation.

Autor: Clément G; Lyon Neuroscience Research Center, CNRS UMR5292-INSERM U1028-University of Lyon, Impact Team, 16 Avenue Doyen Lepine, 69676, Bron Cedex, France. gilles.clement@inserm.fr., Beaton KH; The Aerospace Corporation, El Segundo, CA, USA., Reschke MF; NASA Neuroscience Laboratory, Johnson Space Center, Houston, TX, USA., Wood SJ; NASA Neuroscience Laboratory, Johnson Space Center, Houston, TX, USA.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 Jan 26; Vol. 12 (1), pp. 1430. Date of Electronic Publication: 2022 Jan 26.
DOI: 10.1038/s41598-022-05483-6
Abstrakt: The effect of varying sinusoidal linear acceleration on perception of human motion was examined using 4 motion paradigms: off-vertical axis rotation, variable radius centrifugation, linear lateral translation, and rotation about an earth-horizontal axis. The motion profiles for each paradigm included 6 frequencies (0.01-0.6 Hz) and 5 tilt amplitudes (5°-20°). Subjects verbally reported the perceived angle of their whole-body tilt and the peak-to-peak translation of their head in space and used a joystick capable of recording 2-axis motion in the sagittal and transversal planes to indicate the phase between the perceived and actual motions. The amplitudes of perceived tilt and translation were expressed in terms of gain, i.e., the ratio of perceived tilt to equivalent tilt angle, and the ratio of perceived translation to equivalent linear displacement. Tilt perception gain decreased, whereas translation perception gain increased, with increasing frequency. During off-vertical axis rotation, the phase of tilt perception and of translation perception did not vary across stimulus frequencies. These motion paradigms elicited similar responses in roll tilt and interaural perception of translation, with differences likely due to the influence of naso-occipital linear accelerations and input to the semicircular canals that varied across motion paradigms.
(© 2022. The Author(s).)
Databáze: MEDLINE
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