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P50 Sensory Gating in Infants
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Behavioral states modulate sensory processing in early development.

James C Dooley1,2, Greta Sokoloff1,2,3, Mark S Blumberg1,4,5,2,3

  • 1Department of Psychological & Brain Sciences, University of Iowa, Iowa City, IA 52242, USA.

Current Sleep Medicine Reports
|October 31, 2019
PubMed
Summary
This summary is machine-generated.

Infant sleep-wake states dynamically modulate sensory processing in the visual and somatosensory systems. This modulation shifts rapidly in the second postnatal week, impacting developmental plasticity.

Keywords:
Cortical developmentREM sleepactivity-dependent developmentmovementsomatosensory systemvisual system

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Sleep Research

Background:

  • Cortical activity in adults is modulated by sleep-wake states.
  • In infants, early cortical activity is primarily driven by peripheral sensory input.
  • The modulatory role of behavioral state on sensory processing in infants has been largely overlooked in developmental studies.

Purpose of the Study:

  • To investigate how sleep-wake states modulate sensory processing in the developing infant brain.
  • To understand the dynamic interplay between behavioral state and sensory-driven neural activity during early development.

Main Methods:

  • Utilizing established methods for recording neural activity in unanesthetized infant animals.
  • Examining sensory processing in the visual and somatosensory systems.

Main Results:

  • Sleep and wake states are confirmed to modulate sensory processing in developing visual and somatosensory systems.
  • The nature of this sensory modulation undergoes rapid changes during the second postnatal week.
  • Subcortical nuclei demonstrate altered gating of sensory inputs during this critical developmental period.

Conclusions:

  • The interactions between sleep-wake states, sensory processing, and neural development are complex and dynamic.
  • New methods enable a comprehensive understanding of how infant sleep-wake states influence sensory responses.
  • This research provides insights into how these interactions promote developmental plasticity in infants.