Canal-otolith interactions and detection thresholds of linear and angular components during curved-path self-motion.

ABSTRACT: Gravitational signals arising from the otolith organs and vertical plane rotational signals arising from the semicircular canals interact extensively for accurate estimation of tilt and inertial acceleration. Here we used a classical signal detection paradigm to examine perceptual interactions between otolith and horizontal semicircular canal signals during simultaneous rotation and translation on a curved path. In a rotation detection experiment, blindfolded subjects were asked to detect the presence of angular motion in blocks where half of the trials were pure nasooccipital translation and half were simultaneous translation and yaw rotation (curved-path motion). In separate, translation detection experiments, subjects were also asked to detect either the presence or the absence of nasoo

SUBMITTER: MacNeilage PR 

PROVIDER: S-EPMC2934934 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature