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Related Experiment Video

Updated: Apr 16, 2026

Preterm EEG: A Multimodal Neurophysiological Protocol
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Active touch in late-preterm and early-term neonates.

Michèle Molina1, Coralie Sann, Morgane David

  • 1Psychologie des Actions Langagières et Motrices, Université de Caen-Basse Normandie, Esplanade de la Paix, EA4649, Caen F-14032, France. michele.molina@unicaen.fr.

Developmental Psychobiology
|March 19, 2015
PubMed
Summary

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Early-term infants show novelty responses to tactile exploration, unlike late-preterm infants, indicating developmental differences in sensory processing and brain maturation. This study highlights varying infant exploration abilities.

Area of Science:

  • Neonatal development
  • Neuroscience
  • Developmental psychology

Background:

  • Preterm birth affects neurodevelopmental trajectories.
  • Tactile exploration is crucial for infant learning and sensory processing.
  • Understanding differences between early-term and late-preterm infants is vital for targeted interventions.

Purpose of the Study:

  • To compare the tactile exploratory abilities of late-preterm and early-term neonates.
  • To investigate novelty detection through tactile exploration in different preterm groups.
  • To assess the relationship between brain maturation and tactile sensory processing in neonates.

Main Methods:

  • Utilized an infant-controlled tactile habituation procedure without visual control.
  • Assessed 32 late-preterm (34 weeks GA) and 32 early-term (38 weeks GA) neonates.
Keywords:
active touchearly-term neonatesgraspinghaptic explorationlate-preterm neonatesmodulation

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  • Recorded holding time and Hand Pressure Frequency (HPF) when interacting with smooth and granular objects.

    • Main Results:

    • Both groups showed decreased holding time with habituation.
    • Only early-term neonates increased holding time and showed a reaction to novelty.
    • Hand Pressure Frequency (HPF) dynamics differed between groups during habituation and testing.

    Conclusions:

    • Early-term neonates exhibit more advanced tactile novelty detection compared to late-preterm infants.
    • Findings suggest differential brain maturation impacting sensory exploration and cognitive processing in preterm infants.
    • Results underscore the importance of considering gestational age in assessing neonatal neurodevelopment.