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Related Concept Videos

Hearing01:31

Hearing

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.
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Auditory Perception01:17

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
Hair Cells01:22

Hair Cells

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.
Anatomy of the Ear01:16

Anatomy of the Ear

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: May 30, 2026

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

Published on: March 13, 2026

Facilitated auditory detection for speech sounds.

Carine Signoret1, Etienne Gaudrain, Barbara Tillmann

  • 1CNRS UMR5292, INSERM U1028, Lyon Neuroscience Research Center, Auditory Cognition and Psychoacoustics Team Lyon, France.

Frontiers in Psychology
|August 17, 2011
PubMed
Summary
This summary is machine-generated.

This study shows that speech sounds, like words and pseudo-words, are easier to detect than non-speech sounds. Lexical knowledge further improves auditory detection, especially when recognition is required.

Keywords:
auditory thresholdknowledgemodelrecognitionspeech detection effect

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Area of Science:

  • Cognitive Science
  • Auditory Perception
  • Speech Processing

Background:

  • Knowledge enhances cognitive functions like word recognition.
  • The impact of knowledge on auditory detection remains less understood.
  • Auditory detection is crucial for processing spoken language.

Purpose of the Study:

  • To investigate the influence of phonological and lexical knowledge on auditory detection.
  • To determine if speech stimuli are detected better than non-speech stimuli.
  • To explore the role of lexical knowledge in auditory detection.

Main Methods:

  • Participants performed auditory detection tasks with words, pseudo-words, and non-phonological sounds.
  • Stimuli were energetically matched and presented across various sound levels.
  • Experiment 2 included a subsequent two-alternative forced-choice recognition task.

Main Results:

  • Phonological stimuli (words, pseudo-words) were better detected than non-phonological sounds near the auditory threshold.
  • Words were recognized even when not consciously detected, using a subjective threshold approach.
  • An advantage for words over pseudo-words in detection was observed in Experiment 2.
  • Simulations confirmed speech advantage was not due to stimulus energy differences.

Conclusions:

  • Speech stimuli possess an inherent advantage for auditory signal detection.
  • Lexical knowledge can further enhance auditory detection, particularly when stimulus recognition is involved.
  • These findings contribute to understanding how knowledge influences auditory perception and speech processing.