The Pros and Cons of the Cochlear Implant HS Extension Site To begin to know the advantages and disadvantages of the Cochlear Implant we need to be clear exactly what it is. The Cochlear Implant is an electronic device which is implanted into the human ear, via surgery. Their function is to stimulate the auditory nerve and help people who are severely hearing impaired or are profoundly deaf, improve their hearing ability. The cochlear implant, converts acoustic sounds into electrical pulses. These pulses, in turn, stimulate the auditory nerve directly.
It’s astounding that such a small device has created such gargantuan waves in the deaf community. Kathleen Kernicky simply explained how the implants work: “…a cochlear implant is a small electronic device surgically implanted behind the ear. Working with an earpiece, a microphone worn on the skull and a sound processor worn at the waist or behind the ear, the implant does the work of damaged hair cells in the inner ear (called the cochlea) by feeding electrical impulses to the brain.” (“To Hear Again.” Sun-Sentinel). Even from the conception of the cochlear implant, the National Association of the Deaf (NAD) has spoken out against them. The organization has accused them of being scientifically unsound, highly experimental, and ethically wrong.
The sound wave then enter into the eardrum where vibrations are matched. The eardrum sends the vibration waver to the middle ear whose job is to transfer sound waves to the hammer, the anvil, and the
Such as Hearing aids, The Mincom machine and other telecommunication devises which have a display panel built in and also a key pad similar to a computer key pad, there are also cochlear implants available for people with total hearing loss to help them hear sounds by bypassing the ear and sending sounds straight to the auditory nerve. Deaf
Nasal cavity – Preferred entrance for outside air into the respiratory system. The hairs that line the inside wall are part of the air-cleansing system. Larynx – Voice box. Contains the vocal chords. Moving air breathed in and out creates sound.
The epiglottis is a small flap of tissue that closes over the larynx when one is swallowing (deglutition). The epiglottis prevents food or liquids from entering the larynx. They are related in structure because they are both made of tissue. They are related in function because they work together in order to protect and use your voice. 6.
The parietal lobe receives sensory input for the sense of touch. The Occipital lobe is used for vision. Lastly, the temporal lobe is used for the sense of hearing or other auditory words. C) The lobe that processes the words we here is would be the temporal lobe. D) The lobe that processes what we see is the occipital
Those with moderate deafness find the quietest sounds they can hear are 40 to 69 decibels, the level of normal conversation.Those with severe deafness rely on lip-reading, even with a hearing aid, as the quietest sounds they hear are 70 to 94 decibels - loud shouting. 'Within the inner ear is a structure, called the cochlea, which is lined with sound-sensitive hair cells,' explains Edgar. 'Noises cause these tiny hairs to vibrate, stimulating the auditory nerve and sending messages to the brain, where they are interpreted as sound. We all have a finite number of hair cells and once they die, they are not replaced. 'They die as a natural part of ageing, but how quickly this happens depends on exposure to loud noises - which can prematurely damage the hair cells - over a
The use of microelectronics has reduced the cost of digital techniques and now makes digital methods feasible and cost-effective such as in the field of human-machine communication by voice. [7] The main differences between analogue and digital electronics are Noise Because of the way information is encoded in
The lateral nucleus is concerned with detecting the direction from which the sound is coming, presumably by simply comparing the difference in intensities of the sound reaching the two ears and sending an appropriate signal to the auditory cortex to estimate the direction. The medial superior olivary nucleus, however, has a specific mechanism for detecting the time lag between acoustical signals entering the two ears. This nucleus contains large numbers of neurons that have two major dendrites, one projecting to the right and the other to the left. The acoustical signal from the right ear impinges on the right dendrite, and the signal from the left ear impinges on the left dendrite.The intensity of excitation of each neuron is highly sensitive to a specific time lag between the two acoustical signals from the two ears.The neurons near one border of the nucleus respond maximally to a short time lag, while those near the opposite border respond to a long time lag; those in between respond to intermediate time lags. Thus, a spatial pattern of neuronal stimulation develops in the medial superior olivary nucleus, with sound from directly in front of the head stimulating one set of olivary neurons maximally and sounds from different side angles stimulating other sets of neurons on opposite sides.