Up Versus Down: The Role of Intersensory Redundancy in the Development of Infants' Sensitivity to the Orientation of Moving Objects

Overview

Journal Infancy

Specialties Gynecology & Obstetrics
Pediatrics

Date 2009 Jul 7

PMID 19578562

Citations 18

Authors

Lorraine E Bahrick

Robert Lickliter

Ross Flom

Affiliations

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Abstract

According to the intersensory redundancy hypothesis (IRH), during early development, perception of nonredundantly specified properties is facilitated in unimodal stimulation as compared with bimodal stimulation. Later in development, attention becomes more flexible and infants can detect nonredundantly specified properties in both unimodal and bimodal stimulation. This study tested these predictions by assessing the development of infants' sensitivity to the orientation of an object striking a surface, information that is nonredundantly specified in visual and in audiovisual stimulation. Infants of 3, 5, and 8 months were habituated to unimodal visual or bimodal, synchronous, audiovisual films of a hammer tapping a rhythm in 1 of 2 orientations (upward vs. downward). Results demonstrated an Age × Condition interaction, where younger infants (3 and 5 months) detected the orientation change in unimodal but not bimodal stimulation, whereas older infants (8 months) detected the change in both types of stimulation. Further, in a control study, 3-month-olds detected the orientation change when bimodal stimulation was asynchronous, demonstrating that temporal synchrony impaired performance in the bimodal condition. These findings converge with those of prior studies and support predictions of the IRH.

Citing Articles

Intersensory redundancy impedes face recognition in 12-month-old infants.

Bursalioglu A, Michalak A, Guy M Front Psychol. 2023; 14:1210132.

PMID: 37529309 PMC: 10389088. DOI: 10.3389/fpsyg.2023.1210132.

Individual Differences in Multisensory Attention Skills in Children with Autism Spectrum Disorder Predict Language and Symptom Severity: Evidence from the Multisensory Attention Assessment Protocol (MAAP).

Todd J, Bahrick L J Autism Dev Disord. 2022; 53(12):4685-4710.

PMID: 36181648 PMC: 10065966. DOI: 10.1007/s10803-022-05752-3.

The intersensory redundancy hypothesis: Extending the principle of unimodal facilitation to prenatal development.

Lickliter R, Bahrick L, Vaillant-Mekras J Dev Psychobiol. 2017; 59(7):910-915.

PMID: 28833041 PMC: 5630509. DOI: 10.1002/dev.21551.

Multisensory-Based Rehabilitation Approach: Translational Insights from Animal Models to Early Intervention.

Purpura G, Cioni G, Tinelli F Front Neurosci. 2017; 11:430.

PMID: 28798661 PMC: 5526840. DOI: 10.3389/fnins.2017.00430.

Enhanced attention to speaking faces versus other event types emerges gradually across infancy.

Bahrick L, Todd J, Castellanos I, Sorondo B Dev Psychol. 2016; 52(11):1705-1720.

PMID: 27786526 PMC: 5291072. DOI: 10.1037/dev0000157.

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