Hearing Flashcards
Pinna
Visible part of the ear that protrudes from our heads
Ossicles
three bones in the middle ear.
Cochlea
fluid-filled structure that contains sensory receptor cells.
Hair cells
Auditory receptor cells of inner ear embedded in the basilar membrane
Basilar membrane
thin strip of tissue within the cochlea
temporal theory
asserts that frequency is coded by the activity level of a sensory neuron
Place theory
suggests that different portions of the basilar membrane are sensitive to sounds of different frequency
Monoaural
using one ear
Binaural
using both ears
Interaural level difference
refers to fact that a sound coming from right side of body is more intense in the right ear than the left because attenuation of the sound wave as it passes through your head.
Deafness
partial of complete inability to hear
Congenital deafness
being born without hearing
Conductive haring loss
haring loss due to a problem delivering sound energy to the cochlea
Conductive hearing loss causes
blockage of ear canal, hole in tympanic membrane, problems with the ossicles, fluid between the eardrum and cochlea.
Sensorineural hearing loss causes
aging, head or acoustic trauma, infections and diseases, medications, environmental effects, tumours and toxins.
Meiniere’s disease
results in a degeneration of inner ear structures that can lead to hearing loss, tinnitus, vertigo, and increase in pressure in the inner ear. Cannot be treated within hearing aids.
Cochlear implants
electronic devices that consist of a microphone, speech processor and an electrode array. The device receives sound information and directly stimulates the auditory nerve to transmit information to the brain.
Pure tone
tone with a single frequency vibration.
Frequency
the number of cycles per second of an auditory stimulus in hertz.
