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Development of the ear and hearing
1Department of Communication Disorders, University of Florida Health Sciences Center, 1600 SW Archer Road, P.O. Box 100174, Gainesville, FL 32610-0174, USA.
Insights
Understanding peripheral auditory system development, including the middle and inner ear, is crucial for interpreting infant hearing tests and newborn screening. This knowledge also informs how noise impacts neonatal hearing based on maturation.
Area of Science:
- Auditory Neuroscience
- Developmental Biology
- Audiology
Background:
- The peripheral auditory system, comprising the middle and inner ear (cochlea), undergoes significant development during infancy.
- Interpreting audiologic measures in infants, such as newborn hearing screening, requires understanding auditory system maturation.
- Neonatal auditory system development influences hearing function and susceptibility to noise effects.
Purpose of the Study:
- To provide an overview of the principles and trends in the development of the human middle and inner ear.
- To emphasize the structural and functional maturation of the peripheral auditory system in humans.
- To contextualize human auditory development with relevant findings from animal research.
Main Methods:
- Literature review focusing on principles and trends in auditory system development.
- Emphasis on human peripheral auditory system maturation (structure and function).
- Inclusion of comparative data from animal research.
Main Results:
- The development of the middle and inner ear is a complex maturational process.
- Auditory system maturation directly impacts the reliability and interpretation of infant hearing assessments.
- Understanding developmental trajectories is key to assessing the effects of environmental factors like noise on hearing.
Conclusions:
- Knowledge of peripheral auditory system development is essential for accurate audiologic assessments in infants.
- Maturation of the auditory system is a critical factor in determining hearing function and noise susceptibility in neonates.
- This overview highlights key aspects of human auditory development, supported by animal studies, for a comprehensive understanding.
Abstract:
Knowledge of the development of the peripheral auditory system, especially the middle ear and inner ear (cochlea), contributes to meaningful interpretation of audiologic measures infants, including newborn screening outcome. An understanding of the effects of noise on neonatal auditory system and hearing function is also dependent on maturational factors. This paper is a brief overview of principles and trends in the development of the middle and inner ear. The emphasis is on maturation of human peripheral auditory system structure and function, although reference is also made to animal research.