Related Experiment Video
Updated: Jun 23, 2025
06:34
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
16.4K
Functional and structural maturation of auditory cortex from 2 months to 2 years old
Biorxiv : the Preprint Server for Biology
|June 19, 2024
Summary
Auditory radiation white matter maturation in infants is linked to faster auditory brainstem responses. This study reveals how white matter development impacts early auditory processing in young children.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Auditory Neuroscience
Background:
- Auditory radiation myelination in children correlates with auditory evoked response latency.
- The function-structure association of the auditory system in infants is not well understood.
- Early auditory pathway development is crucial for speech and language acquisition.
Purpose of the Study:
- To investigate the association between auditory radiation white matter microstructure maturation and infant auditory response latency.
- To examine this association in both cross-sectional and longitudinal infant cohorts.
Main Methods:
- Diffusion-weighted magnetic resonance imaging (dMRI) was used to measure auditory radiation white matter microstructure (fractional anisotropy).
- Magnetoencephalography (MEG) measured the latency of the infant auditory response (P2m).
- Cross-sectional (2-24 months) and longitudinal (2-29 months) data from typically developing infants were analyzed.
Main Results:
- Non-linear maturation patterns were observed for both P2m latency and auditory radiation diffusion measures.
- Auditory radiation microstructure explained significant variance in P2m latency, even after accounting for age.
- Longitudinal analysis revealed consistent associations between latency and fractional anisotropy at the individual child level.
Conclusions:
- Findings support the role of auditory radiation white matter in rapid cortical auditory encoding in infants.
- This research highlights the importance of white matter development for early auditory processing.
- The study provides insights into the neurobiological underpinnings of auditory development in early childhood.
Related Concept Videos
01:15Auditory Pathway
5.4K
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...
5.4K
01:31Hearing
52.0K
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.
52.0K
01:13The Cochlea
44.7K
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.
44.7K
01:16Anatomy of the Ear
8.3K
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...
8.3K
01:14Motor and Sensory Areas of the Cortex
3.7K
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
3.7K
01:22Language Development
341
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
341