The costs of monitoring simultaneously two sensory modalities decrease when dividing attention in space

Valerio Santangelo, Sabrina Fagioli, Emiliano Macaluso

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Traditional views of multisensory integration emphasise the advantage of stimulating or attending to different senses at one single spatial location. We challenge this view demonstrating that in-parallel processing of two sensory modalities can be more efficient when attention is spatially divided rather than focused. We asked subjects to monitor simultaneously vision and audition either at one location (focused attention) or in the two opposite hemifields (divided attention) or to monitor one single modality at one or two locations. Behavioural results demonstrated that the costs of monitoring two modalities, versus one modality, decrease when spatial attention is divided between two separate locations compared with focused attention. Neuroimaging data revealed increased activity in the posterior-parietal cortex (PPC) when monitoring two modalities at different locations, while no specific region was recruited in the focused attention conditions. We suggest that supramodal control and the integration of spatial representations hinders the selection of independent sensory streams when attention is spatially focused, while a greater exploitation of modality-specific resources and the engagement of PPC allows in-parallel processing when attention is spatially divided.

Original languageEnglish
Pages (from-to)2717-2727
Number of pages11
JournalNeuroImage
Volume49
Issue number3
DOIs
Publication statusPublished - Feb 1 2010

Fingerprint

Costs and Cost Analysis
Parietal Lobe
Neuroimaging
Hearing

Keywords

  • Audiovisual
  • Divided
  • fMRI
  • Focused
  • Modality specific
  • Multisensory
  • Spatial attention
  • Supramodal

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Neurology

Cite this

The costs of monitoring simultaneously two sensory modalities decrease when dividing attention in space. / Santangelo, Valerio; Fagioli, Sabrina; Macaluso, Emiliano.

In: NeuroImage, Vol. 49, No. 3, 01.02.2010, p. 2717-2727.

Research output: Contribution to journalArticle

Santangelo, Valerio ; Fagioli, Sabrina ; Macaluso, Emiliano. / The costs of monitoring simultaneously two sensory modalities decrease when dividing attention in space. In: NeuroImage. 2010 ; Vol. 49, No. 3. pp. 2717-2727.
@article{91d714afac70443da341b5133b9cab34,
title = "The costs of monitoring simultaneously two sensory modalities decrease when dividing attention in space",
abstract = "Traditional views of multisensory integration emphasise the advantage of stimulating or attending to different senses at one single spatial location. We challenge this view demonstrating that in-parallel processing of two sensory modalities can be more efficient when attention is spatially divided rather than focused. We asked subjects to monitor simultaneously vision and audition either at one location (focused attention) or in the two opposite hemifields (divided attention) or to monitor one single modality at one or two locations. Behavioural results demonstrated that the costs of monitoring two modalities, versus one modality, decrease when spatial attention is divided between two separate locations compared with focused attention. Neuroimaging data revealed increased activity in the posterior-parietal cortex (PPC) when monitoring two modalities at different locations, while no specific region was recruited in the focused attention conditions. We suggest that supramodal control and the integration of spatial representations hinders the selection of independent sensory streams when attention is spatially focused, while a greater exploitation of modality-specific resources and the engagement of PPC allows in-parallel processing when attention is spatially divided.",
keywords = "Audiovisual, Divided, fMRI, Focused, Modality specific, Multisensory, Spatial attention, Supramodal",
author = "Valerio Santangelo and Sabrina Fagioli and Emiliano Macaluso",
year = "2010",
month = "2",
day = "1",
doi = "10.1016/j.neuroimage.2009.10.061",
language = "English",
volume = "49",
pages = "2717--2727",
journal = "NeuroImage",
issn = "1053-8119",
publisher = "Academic Press Inc.",
number = "3",

}

TY - JOUR

T1 - The costs of monitoring simultaneously two sensory modalities decrease when dividing attention in space

AU - Santangelo, Valerio

AU - Fagioli, Sabrina

AU - Macaluso, Emiliano

PY - 2010/2/1

Y1 - 2010/2/1

N2 - Traditional views of multisensory integration emphasise the advantage of stimulating or attending to different senses at one single spatial location. We challenge this view demonstrating that in-parallel processing of two sensory modalities can be more efficient when attention is spatially divided rather than focused. We asked subjects to monitor simultaneously vision and audition either at one location (focused attention) or in the two opposite hemifields (divided attention) or to monitor one single modality at one or two locations. Behavioural results demonstrated that the costs of monitoring two modalities, versus one modality, decrease when spatial attention is divided between two separate locations compared with focused attention. Neuroimaging data revealed increased activity in the posterior-parietal cortex (PPC) when monitoring two modalities at different locations, while no specific region was recruited in the focused attention conditions. We suggest that supramodal control and the integration of spatial representations hinders the selection of independent sensory streams when attention is spatially focused, while a greater exploitation of modality-specific resources and the engagement of PPC allows in-parallel processing when attention is spatially divided.

AB - Traditional views of multisensory integration emphasise the advantage of stimulating or attending to different senses at one single spatial location. We challenge this view demonstrating that in-parallel processing of two sensory modalities can be more efficient when attention is spatially divided rather than focused. We asked subjects to monitor simultaneously vision and audition either at one location (focused attention) or in the two opposite hemifields (divided attention) or to monitor one single modality at one or two locations. Behavioural results demonstrated that the costs of monitoring two modalities, versus one modality, decrease when spatial attention is divided between two separate locations compared with focused attention. Neuroimaging data revealed increased activity in the posterior-parietal cortex (PPC) when monitoring two modalities at different locations, while no specific region was recruited in the focused attention conditions. We suggest that supramodal control and the integration of spatial representations hinders the selection of independent sensory streams when attention is spatially focused, while a greater exploitation of modality-specific resources and the engagement of PPC allows in-parallel processing when attention is spatially divided.

KW - Audiovisual

KW - Divided

KW - fMRI

KW - Focused

KW - Modality specific

KW - Multisensory

KW - Spatial attention

KW - Supramodal

UR - http://www.scopus.com/inward/record.url?scp=71849108291&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=71849108291&partnerID=8YFLogxK

U2 - 10.1016/j.neuroimage.2009.10.061

DO - 10.1016/j.neuroimage.2009.10.061

M3 - Article

C2 - 19878728

AN - SCOPUS:71849108291

VL - 49

SP - 2717

EP - 2727

JO - NeuroImage

JF - NeuroImage

SN - 1053-8119

IS - 3

ER -