PSYC 3690 Chapter Notes - Chapter 10: Vestibular System, Ampulla, Hair Cell

• School: York University
• Department: Psychology
• Course: PSYC 3690
• Professor: Heather Jordan

Document Summary

Interaural time difference (itd) : the difference in time between a sound arriving at one ear vs the other ear. Interaural level difference (ild) : difference in level (intensity) between a sound arriving at an ear vs another; largest at 90,-90. nonexistent at 0, 180. Head blocks high frequency sounds much more effectively than it does low frequency sounds ; almost nonexistent below 1000hz. Lateral superior olive (lso) : a relay station in the olive where inputs from both ears contribute to ild; excitatory inputs come from the ipsilateral ear and inhibitory from contralateral. Cone of confusion : region of positions in space where all sounds produce the same itd and ild. Changing spectral shares across changes in elevation provide cues to auditory localization. Directional transfer function : measure that describes how pinna, ear canal , head and torso change the intensity of sounds with different frequencies that arrive at each ear from different locations in space.