Human discrimination of head-centred visual-inertial yaw rotations

Experimental Brain Research
Alessandro NestiHeinrich H Bülthoff

Abstract

To successfully perform daily activities such as maintaining posture or running, humans need to be sensitive to self-motion over a large range of motion intensities. Recent studies have shown that the human ability to discriminate self-motion in the presence of either inertial-only motion cues or visual-only motion cues is not constant but rather decreases with motion intensity. However, these results do not yet allow for a quantitative description of how self-motion is discriminated in the presence of combined visual and inertial cues, since little is known about visual-inertial perceptual integration and the resulting self-motion perception over a wide range of motion intensity. Here we investigate these two questions for head-centred yaw rotations (0.5 Hz) presented either in darkness or combined with visual cues (optical flow with limited lifetime dots). Participants discriminated a reference motion, repeated unchanged for every trial, from a comparison motion, iteratively adjusted in peak velocity so as to measure the participants' differential threshold, i.e. the smallest perceivable change in stimulus intensity. A total of six participants were tested at four reference velocities (15, 30, 45 and 60 °/s). Results are comb...Continue Reading

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Oct 26, 2013·Experimental Brain Research·Alessandro NestiHeinrich H Bülthoff
Apr 24, 2014·PloS One·Alessandro NestiHeinrich H Bülthoff
Dec 17, 2014·Experimental Brain Research·Alessandro NestiHeinrich H Bülthoff

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Citations

Apr 18, 2016·Biological cybernetics·Christopher J NashRobert S Bigler
Jan 27, 2017·PloS One·Alessandro NestiHeinrich H Bülthoff
Feb 23, 2019·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Gernot SchmidTheodoros Samaras
Jun 5, 2021·Neuroscience·Ana Diaz-Artiles, Faisal Karmali
Sep 4, 2021·Proceedings of the National Academy of Sciences of the United States of America·Jerome CarriotMaurice J Chacron

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Software Mentioned

rmANCOVA
MPI CyberMotion Simulator
Virtools
3DVIA

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