Spatial orientation of the vestibular system.

摘要: 1. A simplified three-dimensional state space model of visual vestibular interaction was formulated. Matrix and dynamical system operators representing coupling from the semicircular canals to velocity storage integrator were incorporated into model. 2. It postulated that matrix for a tilted position composition two linear transformations upright position. One transformation modifies eigenvalues while another rotates pitch roll eigenvectors with head, maintaining yaw axis eigenvector approximately spatially invariant. Using this representation, response characteristics pitch, roll, eye obtained in terms associated eigenvectors. 3. OKAN data monkeys comparing predictions, identified as function tilt side or prone positions, using modification Marquardt algorithm. The right-side-down downward cross-coupling 30 degrees spatial vertical. For position, computed be 20 relative both side-down oblique OKN induced along directions generated which decayed zero straight line single time constant. This verified by spectral analysis residual sequence about fit decaying data. narrow autocorrelation wide power spectrum. 4. Parameters found algorithm Diagonal matrices head coordinate frame introduced represent direct pathway integrator. Model simulations predicted behavior when animal upright, well trajectories also accurately simulated. 5. There similarities between monkey human perception tilts cross-coupling, there only an Aubert (A) effect. upward Muller (E) effects. mean velocities overlay 1 x g perceptual data.(ABSTRACT TRUNCATED AT 400 WORDS)