PSYB51H3 Lecture Notes - Lecture 9: Sound Pressure, Eardrum, Basilar Membrane
Document Summary
Stages before the actual execution of the motor command, that the muscles are twitching somehow and moving the eyeballs. You can actually suppress these eye movements. Anatomy and physiology of the auditory system. Impairments of hearing: hearing in the environment, sound localization (where?) Vibrations of object cause molecules in object s surrounding medium to vibrate as well, which causes pressure changes in medium. Speed of sound depends on density of medium air: ~340 m/s water: ~1500 m/s. Amplitude: magnitude of displacement of a sound pressure wave-> molecules in the air are going to be pushed away and towards the original vibrating object. Intensity: amount of sound energy falling on a unit area. Measured in decibels sound pressure level (db spl) ex. from 6-> 12-> 18-> 24. Ex. a gun shot is very loud but in reality it s intensity is much higher.
