HearHear is a term that refers to the sensory faculty to achieve the perception of a sound. The concept is usually associated with the verb listen, although this mentions the fact of attending to what has been heard. In colloquial language, however, both are used synonymously.

For instance: “I couldn’t hear what you said, could you repeat it?”, “I will not hear any more reproaches: I do what I want with my life”, “After hearing the noise, the man went out to the street and found his car wrecked”.

The faculty of hearing constitutes the sense of hearing, formed by various physiological and psychological procedures that allow the persons hear and pick up sounds. A sound, for its part, is a sensation that occurs in the hearing from certain vibrations.

When sound waves pass through the air and reach the ears, a process begins in the human being It involves various bones, nerves, cells, and membranes. Ultimately, the vibrations that are generated by sound waves are converted into nerve impulses that are interpreted by the brain.

Suppose there is a woman sitting on the Bank of a square. Behind her, a friend appears who calls her by name, without the woman seeing her. The person who is sitting can hear her name (since she perceives the sound in question) and, through a psychic and cognitive process, notices that she is being called and even recognizes the voice of her friend. As she turns around, she observes her friend through her sense of vision.

Ear diseases

HearAlthough hearing is something that most of us humans do with satisfactory results, there are several disorders that affect or cancel hearing. To hear, we need the inner, middle and outer ears to function properly. The sound waves enter through the outer ear, reach the middle and produce vibrations in the eardrum that are transmitted to the internal through the ossicles (very small bones); finally, the impulse Nerves travel from the inner ear to the brain, where they are identified as sounds.

When any of these parts is affected, the process of hearing cannot be carried out with precision. Some diseases and more common disorders are:

* infections: They occur especially in children, but also in a small percentage of the adult population. They usually affect the middle ear and are called otitis media. The presence of fluid and mucus makes hearing difficult, as it prevents the passage of sound. It is very important to detect this type of infection in time in children who have not yet learned to speak, to avoid cognitive problems;

* tinnitus: it is a condition characterized by perception of rumors, hissing or ringing in the ears. It is a disease that produces frequent or constant discomfort, depending on the severity, and that affects many people worldwide. When tinnitus is severe, difficulties appear to perform daily tasks such as work or study, to hear normally and even to sleep;

* Ménière’s disease: it affects the inner ear and usually appears on one side only. It is one of the common causes of deafness and can also be accompanied by tinnitus. Between his symptom there are severe dizziness, pain and pressure in the ear, and intermittent hearing loss. Depending on the severity with which this disease occurs, sudden attacks may appear that cause the absolute loss of balance, with the consequent fall to the ground;

* barotrauma: is he hurt caused by changes in water or air (barometric). For example, a change in altitude can produce a barotrauma characterized by earache, something very common in air travel or in mountainous areas. Among the most common symptoms of barotrauma are difficulty hearing, pain, dizziness, and plugged ears. It is undoubtedly a disorder that does not have serious consequences, but that must be properly cared for.