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Related Concept Videos

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...
Perception of Sound Waves01:01

Perception of Sound Waves

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 frequency...
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.
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...
Sound Intensity Level00:53

Sound Intensity Level

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 hence a...
Assessment of the Cardiovascular System I: Subjective Data01:23

Assessment of the Cardiovascular System I: Subjective Data

A thorough health history and physical assessment are essential for identifying cardiovascular disease (CVD) symptoms and distinguishing them from other health issues.
Initial Enquiry
Ask the patient about their primary concern and thoroughly explore all reported symptoms.
Medical History
Investigate past illnesses affecting the cardiovascular system, such as angina, anemia, rheumatic fever, congenital heart disease, stroke, thrombophlebitis, dysrhythmias, varicosities
Inquire about symptoms...

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Related Experiment Video

Updated: May 8, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Everyday listening questionnaire: correlation between subjective hearing and objective performance.

Martina Brendel, Carolin Frohne-Buechner, Anke Lesinski-Schiedat

    Cochlear Implants International
    |September 4, 2013
    PubMed
    Summary

    Newer cochlear implant (CI) coding strategies improve speech understanding, especially in challenging situations like phone calls and music. Self-assessment using the Everyday Listening Questionnaire 2 (ELQ 2) correlates well with objective measures.

    Keywords:
    Cochlear implantEveryday listeningQuestionnaireSpeech coding strategies

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    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss

    Published on: January 25, 2016

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    Last Updated: May 8, 2026

    Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
    06:04

    Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

    Published on: March 24, 2023

    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
    09:44

    Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss

    Published on: January 25, 2016

    Area of Science:

    • Audiology
    • Biomedical Engineering
    • Neuroscience

    Background:

    • Cochlear implant (CI) technology has advanced, improving speech understanding for recipients.
    • The Everyday Listening Questionnaire 2 (ELQ 2) assesses CI user challenges in daily listening.
    • Comparing subjective self-assessments with objective measures is crucial for evaluating CI performance.

    Purpose of the Study:

    • To compare self-reported listening challenges (ELQ 2) with objective speech recognition in CI users.
    • To evaluate differences in listening performance between users of older and newer CI coding strategies.

    Main Methods:

    • Adult CI recipients using Advanced Bionics systems completed the ELQ 2.
    • 100 participants were recruited regardless of processor or coding strategy.
    • Correlations between subjective ELQ 2 scores and objective speech perception data were analyzed based on coding strategies.

    Main Results:

    • Significant differences in telephone use and music perception were observed between users of older and newer coding strategies (HiRes, HiRes 120).
    • Positive correlations were found between specific subjective ratings and objective speech perception in noise.
    • Newer strategies demonstrated better performance in challenging listening environments.

    Conclusions:

    • Subjective and objective data on CI performance show a strong correlation.
    • Advanced speech coding strategies are associated with fewer difficulties in complex auditory situations.
    • The ELQ 2 is a valuable tool for assessing real-world listening challenges in CI users.