Cochlea

Hearing is a complex process where thousands of tiny hair cells, located in the cochlea of the ear, convert vibrations of sound waves into electrical nerve pulses. These pulses are understood by the brain to be what a person hears as sound. Hearing loss can occur throughout any part of the ear, and in varying degrees of severity. As hearing loss can affect a child’s ability to develop speech, language, and social skills, it is important to identify any signs and symptoms early in the child’s…

and outer {3}. Glue ear occurs when the middle ear becomes filled with a sticky fluid, similar to glue {3}. When it comes to hearing, vibrations travel through the three parts of the ear until they reach a portion of the inner ear called the cochlea. The cochlea resembles a snail’s shell and is responsible for converting vibrations into nerve impulses which can be sent to the brain and interpreted {4}. The fluid caused by glue ear affects this process as it dampens the vibrations and stops the…

The reflex is intensity-dependent, as particular intensities cause the contraction. Once contracted, it lessens the vibrations traveling through the stapes footplate as it pulls the stapes away from the oval window, decreasing the energy to the cochlea and compliance (Emanuel, 2009). Furthermore, it is a bilateral phenomenon as stimulation in one ear evokes an AR in the opposite ear as well, involving contralateral and…

How do hearing aids paintings? hearing aids can provide the help you can want to be able to pay attention the arena around you in complete shade. hearing aids pick up all the excellent sounds around you, they process the sounds and launch the signal again into your ear - all without delay supplying you with a rounded 360-degree listening experience customized just for you. listening to Aids are available with varieties of generation: analog and virtual. The components of a listening to aid There…

ears that function in many ways, specifically in the detection of vibrations and seismic cues due to their ear structure that have three essential parts: the outer ear which captures sounds, a middle ear which filters and amplifies sound, and the cochlea (the inner ear) which is a band-pass filter and transducer of sound into neural impulses (Ketten 1994). Another important functional aspect of the middle ear is that the quantity of sound energy captured by the pinnae and tympanic membrane…

A very knowledgeable individual once said, “When you light a cigarette, your life burns with it” and in my opinion, no truer words were ever uttered. Smoking cigarettes disturb, destroy, crush and cripple every organ and system in the body. Furthermore, it negatively alters an individual’s physical appearance, reduces his or her lifespan, and causes and leaves the body susceptible to, a plethora of diseases. When conducting a physical or head to toe assessment on Mr. T the nurse can expect his…

(1,11-12). It was revealed that exposure to high levels of glucocorticoids during fetal period result in differentiation of inner ear tissues with fewer blood vessels and progenitor cells (11). This condition, in turn, will damage the cochlea (11) and increases hearing threshold (9). Furthermore, in these animals, vulnerability to ototoxic agents will be increased. (13). Conflict at The higher levels of afferent auditory pathways is also seen in animals with a history of embryonic stress…

Results indicated that average reaction times for the auditory and visual stimuli tests were both significantly different from that of the control conditions (see table 1 and figures 1, 2 and 3). Differences in average reaction time differing from the control test (test 1) range from as little as 4 milliseconds (test 2, test subject 2) to that of 67 milliseconds (test 4, test subject 3) (see table 1 and figure 1, 2 and 1.3). According to the averages of the percent increase in reaction time, the…

the external sound-gathering part of the ear. Its function is to gather sound energy and focuses it on the eardrum. The middle ear, an air-filled chamber serves as an amplifier of vibration. The inner ear is where the cochlea is located and also where we perceive sound. While cochlea plays an important part in hearing perception, how sounds move from there to the brain is even more complicated. The vibration of the membrane moves the hair, which sends signals to the roots, the spiral ganglia,…

Research into the genetics of deafness has shown that mutations in the CX26 gene, located on human chromosome 13q11, cause non-syndromic recessive deafness (9, 10). Expression of GJB2 has been documented in a variety of cells and tissues. In the cochlea, CX26-containing gap junctions are proposed to maintain K homeostasis by ferrying K away from the hair cells during auditory transduction(11). Recently, it has been shown that the intercellular transduction of the second messenger inositol…