Related Experiment Video
Updated: Aug 11, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
Intermodal enhancement of stimulus localisation in infants born prematurely
Insights
Infants integrate sound and light for better orientation, even at distant positions. This auditory-visual enhancement develops normally in premature infants, aiding sensory development research.
Area of Science:
- Developmental Psychology
- Neuroscience
- Sensory Integration
Background:
- Infants' sensory processing abilities are crucial for development.
- Understanding cross-modal interactions aids in assessing infant development.
- Premature infants may exhibit altered sensory development trajectories.
Purpose of the Study:
- To investigate the role of auditory-visual integration in infant orientation.
- To determine if infants can orient to peripheral stimuli using combined sensory inputs.
- To assess the development of cross-modal spatial localization in premature infants.
Main Methods:
- Infants (4.5–15 months) were presented with auditory, visual, or combined auditory-visual stimuli.
- Stimuli were presented at various positions in sensory space, including peripheral locations.
- Orienting responses were measured to assess stimulus detection and localization.
Main Results:
- Infants exhibited robust orienting responses to peripheral stimuli only when auditory and visual cues were spatially congruent.
- This auditory-visual enhancement effect was observed across all infants, regardless of gestational age.
- Infants demonstrated the ability to respond to visual stimuli beyond traditional visual field limits.
Conclusions:
- Spatially coherent auditory-visual stimuli significantly enhance infant orientation to peripheral locations.
- Intersensory integration and stimulus localization appear to develop typically in premature infants.
- The auditory-visual enhancement test is a promising tool for clinical and laboratory assessments of infant sensory development.
Abstract:
The interaction of auditory and visual modalities in the enhancement of orientation was examined in premature and near-term infants by presenting them auditory or visual stimuli or auditory-visual stimulus combinations at various positions in sensory space. In 4.5--15-mo-olds, brisk orienting responses could be elicited to very peripheral stimulus positions but only when the stimulus consisted of a spatially coherent auditory-visual combination (i.e., where a sound and a light occurred at the same point in space). This occurred for all infants, irrespective of age or gestational age at birth. First, the result shows that infants can respond to visual stimuli at eccentric positions, beyond the supposed limits of their effective visual fields as measured by standard perimetry. Second, the result extends earlier studies showing that intersensory integration and stimulus localisation develop relatively normally in prematurely born infants. The auditory-visual enhancement test as used here may have a number of further uses and applications in the clinic and laboratory.
