Hearing (or audition; adjectival form: "auditory" or "aural") is the ability to perceive sound by detecting vibrations through an organ such as the ear. It is one of the traditional five senses. The inability to hear is called deafness.

In humans and other vertebrates, hearing is performed primarily by the auditory system: vibrations are detected by the ear and transduced into nerve impulses that are perceived by the brain (primarily in the temporal lobe). Like touch, audition requires sensitivity to the movement of molecules in the world outside the organism. Both hearing and touch are types of mechanosensation.

Contents

• 1 Hearing mechanism
• 2 Hearing tests
• 3 Defense mechanism
• 4 Hearing underwater
• 5 Hearing in animals
• 6 Mathematics
• 7 See also
• 8 References
• 9 Further reading
• 10 External links

Adjective

listening (not comparable)

1. Of something that listens, or is used in order to listen.

   Any listening person can tell she's lying.

   He could hear better when he used his listening device.

Noun

listening (plural listenings)

1. Action of the verb to listen

   You can learn a lot from grandparents by listening.

Listening is the act of hearing something and paying attention to what is heard.

Sourced

• When people talk listen completely. Most people never listen.
  • Ernest Hemingway, letter of advice to a young writer, reported in Malcolm Cowley, "Mister Papa", LIFE magazine (January 10, 1949), Volume 26, No. 2, p. 90. A longer version appears in Hemingway's Across the River and Into the Trees (1967): "When people talk listen completely. Don't be thinking what you're going to say. Most people never listen. Nor do they observe. You should be able to go into a room and when you come out know everything that you saw there and not only that. If that room gave you any feeling you should know exactly what it was that gave you that feeling".

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