Related Experiment Video
Updated: Oct 4, 2025
09:13
Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
Published on: April 22, 2015
16.7K
Central Auditory Processing and the Relationship to Perceived Hearing Difficulty: The Jackson Heart Study.
Brandon Shepherd1, Christopher Spankovich1, Charles E Bishop1
1Department of Otolaryngology and Communicative Sciences.
Summary
Central auditory processing (CAP) deficits are linked to perceived hearing difficulty (PHD) in African Americans with normal hearing. These findings highlight the importance of assessing CAP beyond standard hearing tests.
Area of Science:
- Audiology
- Neuroscience
- Public Health
Background:
- Limited population-based studies exist on central auditory processing (CAP).
- Perceived hearing difficulty (PHD) can occur despite normal pure-tone audiometry.
- Investigating CAP in diverse populations is crucial for understanding hearing health.
Purpose of the Study:
- To determine the relationship between CAP measures and PHD in an African-American population.
- To assess CAP using Quick Speech-in-Noise (QuickSIN) and Dichotic Digits, Double Pairs (DDT2) tests.
- To identify if CAP deficits contribute to hearing difficulties in individuals with normal audiograms.
Main Methods:
- A cross-sectional study of the Jackson Heart Study (JHS) cohort.
- Included African-American participants with normal hearing sensitivity (PTA-4 or PT-AF ≤ 25 dBHL).
- Logistic regression analyzed the association between CAP measures (QuickSIN, DDT2) and PHD, adjusted for covariates.
Main Results:
- 27-28% of participants reported PHD despite normal hearing.
- Increased QuickSIN scores (worse CAP) were associated with higher odds of PHD (OR 1.14-1.15).
- Reduced DDT2 scores (worse CAP) were associated with higher odds of PHD (OR 0.92-0.93).
Conclusions:
- Central auditory processing deficits are significantly associated with increased odds of perceived hearing difficulty.
- These findings apply to individuals with normal pure-tone hearing sensitivity within the JHS cohort.
- CAP assessment may be valuable for identifying individuals experiencing hearing difficulties not detected by standard audiometry.
Related Concept Videos
01:17Auditory Perception
647
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...
647
01:31Hearing
53.6K
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.
53.6K
01:15Auditory Pathway
5.9K
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...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
5.9K
01:21Perceiving Loudness, Pitch, and Location
467
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...
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...
467
01:25Assessment of the Cardiovascular System IV: Auscultation
791
Cardiac auscultation is a clinical skill used to assess heart function and detect abnormalities. It involves listening to heart sounds at specific anatomical locations through a stethoscope.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
791
01:01Perception of Sound Waves
4.8K
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...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.8K