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Effects of spatial congruity on audio-visual multimodal integration.
J Cogn Neurosci. 2005 Sep; 17(9):1396-409.JC

Abstract

Spatial constraints on multisensory integration of auditory (A) and visual (V) stimuli were investigated in humans using behavioral and electrophysiological measures. The aim was to find out whether cross-modal interactions between A and V stimuli depend on their spatial congruity, as has been found for multisensory neurons in animal studies (Stein & Meredith, 1993). Randomized sequences of unimodal (A or V) and simultaneous bimodal (AV) stimuli were presented to right- or left-field locations while subjects made speeded responses to infrequent targets of greater intensity that occurred in either or both modalities. Behavioral responses to the bimodal stimuli were faster and more accurate than to the unimodal stimuli for both same-location and different-location AV pairings. The neural basis of this cross-modal facilitation was studied by comparing event-related potentials (ERPs) to the bimodal AV stimuli with the summed ERPs to the unimodal A and V stimuli. These comparisons revealed neural interactions localized to the ventral occipito-temporal cortex (at 190 msec) and to the superior temporal cortical areas (at 260 msec) for both same- and different-location AV pairings. In contrast, ERP interactions that differed according to spatial congruity included a phase and amplitude modulation of visual-evoked activity localized to the ventral occipito-temporal cortex at 100-400 msec and an amplitude modulation of activity localized to the superior temporal region at 260-280 msec. These results demonstrate overlapping but distinctive patterns of multisensory integration for spatially congruent and incongruent AV stimuli.

Authors+Show Affiliations

Department of Neurosciences, School of Medicine, University of California-San Diego, La Jolla, CA 92093-0608, USA. wat@sdepl.ucsd.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

16197693

Citation

Teder-Sälejärvi, W A., et al. "Effects of Spatial Congruity On Audio-visual Multimodal Integration." Journal of Cognitive Neuroscience, vol. 17, no. 9, 2005, pp. 1396-409.
Teder-Sälejärvi WA, Di Russo F, McDonald JJ, et al. Effects of spatial congruity on audio-visual multimodal integration. J Cogn Neurosci. 2005;17(9):1396-409.
Teder-Sälejärvi, W. A., Di Russo, F., McDonald, J. J., & Hillyard, S. A. (2005). Effects of spatial congruity on audio-visual multimodal integration. Journal of Cognitive Neuroscience, 17(9), 1396-409.
Teder-Sälejärvi WA, et al. Effects of Spatial Congruity On Audio-visual Multimodal Integration. J Cogn Neurosci. 2005;17(9):1396-409. PubMed PMID: 16197693.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of spatial congruity on audio-visual multimodal integration. AU - Teder-Sälejärvi,W A, AU - Di Russo,F, AU - McDonald,J J, AU - Hillyard,S A, PY - 2005/10/4/pubmed PY - 2006/2/8/medline PY - 2005/10/4/entrez SP - 1396 EP - 409 JF - Journal of cognitive neuroscience JO - J Cogn Neurosci VL - 17 IS - 9 N2 - Spatial constraints on multisensory integration of auditory (A) and visual (V) stimuli were investigated in humans using behavioral and electrophysiological measures. The aim was to find out whether cross-modal interactions between A and V stimuli depend on their spatial congruity, as has been found for multisensory neurons in animal studies (Stein & Meredith, 1993). Randomized sequences of unimodal (A or V) and simultaneous bimodal (AV) stimuli were presented to right- or left-field locations while subjects made speeded responses to infrequent targets of greater intensity that occurred in either or both modalities. Behavioral responses to the bimodal stimuli were faster and more accurate than to the unimodal stimuli for both same-location and different-location AV pairings. The neural basis of this cross-modal facilitation was studied by comparing event-related potentials (ERPs) to the bimodal AV stimuli with the summed ERPs to the unimodal A and V stimuli. These comparisons revealed neural interactions localized to the ventral occipito-temporal cortex (at 190 msec) and to the superior temporal cortical areas (at 260 msec) for both same- and different-location AV pairings. In contrast, ERP interactions that differed according to spatial congruity included a phase and amplitude modulation of visual-evoked activity localized to the ventral occipito-temporal cortex at 100-400 msec and an amplitude modulation of activity localized to the superior temporal region at 260-280 msec. These results demonstrate overlapping but distinctive patterns of multisensory integration for spatially congruent and incongruent AV stimuli. SN - 0898-929X UR - https://www.unboundmedicine.com/medline/citation/16197693/Effects_of_spatial_congruity_on_audio_visual_multimodal_integration_ L2 - https://www.mitpressjournals.org/doi/10.1162/0898929054985383?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -