All Flashcards
What is the order of the journey of sound through the ear?
Pinna → Ear Canal → Eardrum → Middle Ear Bones → Cochlea → Auditory Nerve → Thalamus → Auditory Cortex.
What is the process of transduction in the ear?
Hair cells convert mechanical energy from sound waves into neural impulses.
What is the effect of damage to the hair cells?
Sensorineural hearing loss.
What is the effect of damage to the eardrum?
Conduction hearing loss.
What is the effect of loud noise exposure?
Can cause sensorineural hearing loss.
What is the effect of differences in timing and intensity of sound reaching each ear?
Enables sound localization.
What is the effect of aging on hearing?
Can lead to sensorineural hearing loss.
What is the effect of heredity on hearing?
Can increase the risk of sensorineural hearing loss.
What is the effect of a high amplitude sound wave?
Perception of a louder sound.
What is the effect of a high frequency sound wave?
Perception of a higher pitched sound.
What is the effect of damage to the auditory nerve?
Sensorineural hearing loss and difficulty transmitting auditory information to the brain.
What is the effect of fluid buildup in the middle ear?
Conduction hearing loss due to interference with the vibration of the middle ear bones.
Compare sensorineural and conduction hearing loss.
Sensorineural: damage to inner ear/auditory nerve. Conduction: damage to outer/middle ear.
Compare Place Theory and Frequency Theory.
Place Theory: High-pitched sounds, location on basilar membrane. Frequency Theory: Low-pitched sounds, rate of neural impulses.