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The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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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: Sep 12, 2025

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

Infant Auditory Processing and Event-related Brain Oscillations

Published on: July 1, 2015

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Newborns' Asymmetrical Processing of Order From Sequentially Presented Magnitudes.

Martina Arioli1, Valentina Silvestri1, Angelo Petrelli2

  • 1Department of Psychology, Università Degli Studi di Milano-Bicocca, Milan, Italy.

Child Development
|August 7, 2025
PubMed
Summary

Newborns can process ordinal information when both number and size change simultaneously, but only if the changes are increasing. This suggests early continuity in how infants represent quantity.

Keywords:
human newbornsincreasingmagnitudesordinal computationvisual sequences

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Area of Science:

  • Cognitive Development
  • Developmental Psychology
  • Neuroscience

Background:

  • Four-month-old infants can extract ordinal information from visual sequences.
  • Ordinal processing relies on increasing magnitude relations in number and size.
  • Understanding the origins of ordinal processing in newborns is crucial for developmental theories.

Purpose of the Study:

  • To investigate the ontogenetic origins of ordinal processing in newborns.
  • To determine if newborns can discriminate reversals in numerical and size-based sequences.
  • To examine the role of concurrent numerical and non-numerical cues in early ordinal discrimination.

Main Methods:

  • Habituation paradigm with newborns to assess visual sequence discrimination.
  • Experiment 1: Testing discrimination of numerosity reversals.
  • Experiment 2 & 3: Testing discrimination of numerical and size-based order with redundant cues.

Main Results:

  • Newborns successfully discriminated sequence reversals only when both numerical and non-numerical cues changed concurrently.
  • Discrimination occurred specifically after habituation to increasing order sequences.
  • A significant effect was found for concurrent cue change and increasing order (p=0.017).

Conclusions:

  • Newborns demonstrate rudimentary ordinal processing abilities.
  • Early magnitude representation shows continuity across development and species.
  • Concurrent changes in multiple quantitative dimensions are essential for newborn ordinal discrimination.