Infant sensory gating and a developmental cascade to autistic traits and anxiety

Area of Science:

• Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Infant sensory environment disruptions impact neural development and behavior.
• Inhibitory signaling and sensory gating are critical factors in early sensory experience.
• Impaired sensory gating in neonates is linked to sensory over-responsivity, autistic traits, and anxiety.

Purpose of the Study:

• To propose a model for the developmental cascade of impaired sensory gating.
• To highlight infant sensory responsivity as an intermediate phenotype.
• To emphasize the importance of early sensory processing for research and intervention.

Main Methods:

• Review of converging human and animal studies.
• Developmental cascade modeling.
• Analysis of sensory gating's role in neurodevelopment.

Main Results:

• Impaired sensory gating during neonatal sensitive periods can initiate a cascade.
• This cascade promotes phenotypes including sensory over-responsivity and psychiatric challenges.
• Sensory responsivity differences serve as a crucial intermediate phenotype.

Conclusions:

• A model is proposed for how disrupted sensory gating impacts neurodevelopment.
• Early sensory processing differences are vital for identifying at-risk infants.
• Targeting sensory gating offers potential for early screening and intervention strategies.