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Modality‐dependent Indication of the Subjective Vertical during Combined Linear and Rotational Movements
Author(s) -
Guenther Anna L.,
Bartl Klaus,
Nauderer Josef,
Schneider Erich,
Huesmann Alexander,
Brandt Thomas,
Glasauer Stefan
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2009.03849.x
Subject(s) - modality (human–computer interaction) , geodesy , physics , mathematics , geology , computer science , artificial intelligence
Humans can discriminate whether a change in the direction of gravito‐inertial force (GIF) is caused by body tilt or by linear translation. This ability, attributed to vestibular sensory fusion, is often examined by asking subjects to adjust an indicator to match their subjective earth‐fixed vertical (SV). We used two different modalities, visual and haptic, to examine continuous adjustment during different combinations of roll rotation and linear translation on a hexapod motion device. We conclude that, in conditions of combined translational and rotational motion, the modality of indication plays a major role for the perception of verticality of the indicator.