PSYC 230 Study Guide - Midterm Guide: Angular Acceleration, Angular Velocity, Otolith

• School: University of Illinois
• Department: Psychology
• Course: PSYC 230
• Professor: Simona Buetti

Document Summary

* vestibular organs three semicircular canals: sense angular motion (horizontal, anterior, posterior) two otolith organs: sense gravity and linear acceleration (utricle and saccule) * problems with the vestibular system spatial disorientation dizziness vertigo: a sensation of rotation or spinning imbalance blurred vision illusory self-motion: modalities and qualities of spatial orientation semicircular canals. : the three toroidal tubes in the vestibular system that sense angular acceleration, a change in angular velocity otolith organs. : the mechanical structures in the vestibular system that sense both linear acceleration and gravity amplitude: the size of a head movement. e. g. linear motion, rotation, tilt direction: the line along which one faces or moves. **directions of linear motion: x, y, z axis. **directions of rotation: roll (rotation around x-axis, ), pitch (y-axis, nodding), yaw (z, no) **directions for sense of tilt: pitch tilt forward/backward, roll tilt to the left/right: the mammalian vestibular system. * hair cells hair cells release neurotransmitter at a constant rate.