MHR 711 Study Guide - Midterm Guide: Sensorineural Hearing Loss, Tinnitus, Cochlea

• School: Ryerson University
• Department: Human Resources
• Course: MHR 711
• Professor: Danielle Lamb

Document Summary

Physical agents: sources of energy that may cause injury or disease (ex: noise, vibration, temperature, radiation, heat) Ambient: all-encompassing condition associated with a given environment, being usually a composite of inputs from sources all around us (ex: condition surrounding entire environment heat, light) Early warning change: a deterioration of hearing in the upper frequency the earliest detectable sign of noise induced hearing loss (ex: test of hearing loss) Can cause physiological damage that affects hearing and psychological effects. Physiological damage conductive hearing loss (restricts transmission of sound to cochlea or inner ear) and sensorineural hearing loss (nerve deafness) affects the cochlea, irreversible. Indications of exposure to excessive noise levels: ringing in ears (tinnitus) and raising volume on radio or television. Temporary threshold shifts (tts): gradual hearing loss, can be sometimes reversed by removal from noise source. Permanent threshold shifts (pts): hearing disability that is permanent and may not be correctable.