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Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

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The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
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Related Experiment Video

Updated: May 4, 2026

P50 Sensory Gating in Infants
12:55

P50 Sensory Gating in Infants

Published on: December 26, 2013

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P50 sensory gating in infants.

Anne Spencer Ross1, Sharon Kay Hunter, Mark A Groth

  • 1Department of Psychiatry, University of Colorado School of Medicine.

Journal of Visualized Experiments : Jove
|January 17, 2014
PubMed
Summary

Assessing infant auditory P50 sensory gating, a passive EEG measure, offers a novel window into early attention development. This method may help identify neurodevelopmental origins of attentional deficits in infants.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Psychiatry

Background:

  • Attentional deficits are prevalent in neuropsychiatric disorders like ADHD, autism, bipolar disorder, and schizophrenia.
  • These deficits often stem from neurodevelopmental issues originating in infancy or prenatal stages.
  • Current methods for assessing attention in early infancy are limited.

Purpose of the Study:

  • To introduce and describe the methodology for assessing infant auditory P50 sensory gating.
  • To highlight the potential of this passive electroencephalogram (EEG) task for studying early attention.
  • To provide a tool for understanding the developmental trajectory of attentional deficits.

Main Methods:

  • Utilizes auditory P50 sensory gating, a passive EEG task measuring the brain's response to auditory stimuli.

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  • Presents identical auditory stimuli 500 ms apart to assess the gating response.
  • Adapts methodologies previously used in adult populations for infant assessment.

    • Main Results:

    • Sensory gating involves reduced EEG response to a second stimulus, indicating effective inhibition.
    • Poor sensory gating (failure to reduce the response to the second stimulus) is linked to impaired cerebral inhibition.
    • This impairment in sensory gating correlates with attentional deficits.

    Conclusions:

    • Infant auditory P50 sensory gating is a viable method for assessing early attention.
    • This passive task is suitable for use with young infants, offering insights into neurodevelopment.
    • It may serve as an early indicator for attentional deficits and related neuropsychiatric disorders.