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Related Concept Videos

Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
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Perception of Sound Waves01:01

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The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
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Introduction to Special Senses01:26

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Hair Cells01:22

Hair Cells

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Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
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Anatomy of the Ear01:16

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Related Experiment Video

Updated: Jul 23, 2025

Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea
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WHAT MAKES HUMAN HEARING SPECIAL?

Christian J Sumner1, Christopher Bergevin2, Andrew J Oxenham3,4

  • 1NTU Psychology, Nottingham Trent University, Nottingham, United Kingdom.

Frontiers for Young Minds
|July 19, 2023
PubMed
Summary
This summary is machine-generated.

Human hearing is remarkable, with the inner ear playing a key role. While many animals hear higher or quieter sounds, humans excel at distinguishing similar sounds, evidenced by otoacoustic emissions.

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Area of Science:

  • Auditory Neuroscience
  • Comparative Biology
  • Bioacoustics

Background:

  • Humans and animals possess a broad hearing range, distinguishing subtle sound differences.
  • The mechanisms underlying these auditory capabilities, particularly in the inner ear, are complex.
  • Comparing human hearing to other species reveals unique strengths and limitations.

Purpose of the Study:

  • To investigate the inner ear's role in determining animal hearing abilities.
  • To compare human auditory perception with that of other mammals.
  • To explore the potential human superiority in distinguishing similar sounds.

Main Methods:

  • Analysis of inner ear structures and their relation to hearing frequency ranges.
  • Comparative studies of auditory thresholds in humans and various animal species.
  • Investigation of otoacoustic emissions as a biomarker for auditory processing.

Main Results:

  • Many mammals can perceive higher frequencies and quieter sounds than humans.
  • Humans demonstrate exceptional ability in differentiating between similar auditory stimuli.
  • Otoacoustic emissions, generated by the ears, provide insights into sound processing.

Conclusions:

  • The inner ear is critical for defining the spectrum of audible sounds for a species.
  • While other animals may have broader hearing ranges, humans possess advanced capabilities in sound discrimination.
  • Otoacoustic emissions offer a unique physiological correlate to human auditory acuity.