Natural stimuli from three coherent modalities enhance behavioral responses and electrophysiological cortical activity in humans
Identifieur interne : 000030 ( PascalFrancis/Checkpoint ); précédent : 000029; suivant : 000031Natural stimuli from three coherent modalities enhance behavioral responses and electrophysiological cortical activity in humans
Auteurs : Irit Sella [Israël] ; Miriam Reiner [Israël] ; Hillel Pratt [Israël]Source :
- International journal of psychophysiology [ 0167-8760 ] ; 2014.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Réalité virtuelle, Homme.
English descriptors
- KwdEn :
Abstract
Cues that involve a number of sensory modalities are processed in the brain in an interactive multimodal manner rather than independently for each modality. We studied multimodal integration in a natural, yet fully controlled scene, implemented as an interactive game in an auditory-haptic-visual virtual environment In this imitation of a natural scene, the targets of perception were ecologically valid uni-, bi- and tri-modal manifestations of a simple event-a ball hitting a wall. Subjects were engaged in the game while their behavioral and early cortical electrophysiological responses were measured. Behavioral results confirmed that tri-modal cues were detected faster and more accurately than bi-modal cues, which, likewise, showed advantages over unimodal responses. Event-Related Potentials (ERPs) were recorded, and the first 200 ms following stimulus onset was analyzed to reveal the latencies of cortical multimodal interactions as estimated by sLORETA. These electrophysiological findings indicated bi-modal as well as tri-modal interactions beginning very early (∼30 ms), uniquely for each multimodal combination. The results suggest that early cortical multimodal integration accelerates cortical activity and, in turn, enhances performance measures. This acceleration registers on the scalp as sub-additive cortical activation.
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type="ISSN">0167-8760</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Behavior</term><term>Cerebral cortex</term><term>Electrophysiology</term><term>Event evoked potential</term><term>Evoked potential</term><term>Hearing</term><term>Human</term><term>Intermodal perception</term><term>Tactile sensitivity</term><term>Virtual reality</term><term>Vision</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Comportement</term><term>Electrophysiologie</term><term>Cortex cérébral</term><term>Perception intermodale</term><term>Audition</term><term>Vision</term><term>Sensibilité tactile</term><term>Potentiel évoqué</term><term>Potentiel évoqué cognitif</term><term>Réalité virtuelle</term><term>Homme</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Réalité virtuelle</term><term>Homme</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cues that involve a number of sensory modalities are processed in the brain in an interactive multimodal manner rather than independently for each modality. We studied multimodal integration in a natural, yet fully controlled scene, implemented as an interactive game in an auditory-haptic-visual virtual environment In this imitation of a natural scene, the targets of perception were ecologically valid uni-, bi- and tri-modal manifestations of a simple event-a ball hitting a wall. Subjects were engaged in the game while their behavioral and early cortical electrophysiological responses were measured. Behavioral results confirmed that tri-modal cues were detected faster and more accurately than bi-modal cues, which, likewise, showed advantages over unimodal responses. Event-Related Potentials (ERPs) were recorded, and the first 200 ms following stimulus onset was analyzed to reveal the latencies of cortical multimodal interactions as estimated by sLORETA. These electrophysiological findings indicated bi-modal as well as tri-modal interactions beginning very early (∼30 ms), uniquely for each multimodal combination. The results suggest that early cortical multimodal integration accelerates cortical activity and, in turn, enhances performance measures. This acceleration registers on the scalp as sub-additive cortical activation.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0167-8760</s0></fA01><fA02 i1="01"><s0>IJPSEE</s0></fA02><fA03 i2="1"><s0>Int. j. psychophysiol.</s0></fA03><fA05><s2>93</s2></fA05><fA06><s2>1</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Natural stimuli from three coherent modalities enhance behavioral responses and electrophysiological cortical activity in humans</s1></fA08><fA09 i1="01" i2="1" l="ENG"><s1>Applied Neuroscience: Functional enhancement, prevention, characterisation and methodology. 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