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Infant Auditory Processing and Event-related Brain Oscillations
06:34

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Published on: July 1, 2015

Functional specializations for music processing in the human newborn brain.

Daniela Perani1, Maria Cristina Saccuman, Paola Scifo

  • 1Faculty of Psychology, Vita-Salute San Raffaele University, 20132 Milan, Italy. perani.daniela@hsr.it

Proceedings of the National Academy of Sciences of the United States of America
|February 24, 2010
PubMed
Summary
This summary is machine-generated.

Newborn brains show early music processing specialization. Even at birth, the infant brain is sensitive to musical elements like key and dissonance, indicating innate neural architecture for music perception.

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Area of Science:

  • Neuroscience
  • Auditory Perception
  • Developmental Psychology

Background:

  • Adults exhibit right-hemispheric dominance for processing complex musical elements like pitch, melody, harmony, and musical structure.
  • The extent to which this specialization arises from musical experience versus inherent neurobiological factors remains unclear.
  • Investigating music processing in newborns, with minimal auditory exposure, offers insight into innate neural constraints.

Purpose of the Study:

  • To determine if hemispheric specialization for music processing is present at birth.
  • To investigate how the infant brain responds to musical variations, such as changes in tonal key and consonance/dissonance.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed to measure brain activity in 1- to 3-day-old newborns.
  • Newborns were exposed to excerpts of Western tonal music and altered versions (key changes, permanent dissonance).
  • Hemodynamic responses in auditory cortex and other brain regions were analyzed.

Main Results:

  • Music elicited predominantly right-hemispheric activations in the primary and higher-order auditory cortex of newborns.
  • Altered musical excerpts led to reduced right auditory cortex activity.
  • Processing of altered music engaged the left inferior frontal cortex and limbic structures.

Conclusions:

  • The infant brain demonstrates hemispheric specialization for music processing within hours of birth.
  • Newborns' neural architecture for music perception is sensitive to tonal key and consonance/dissonance.
  • These findings suggest an innate basis for music processing, potentially independent of extensive musical experience.