Spatial remapping in the audio-tactile ventriloquism effect: a TMS investigation on the role of the ventral intraparietal area.
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Spatial remapping in the audio-tactile ventriloquism effect: a TMS investigation on the role of the ventral intraparietal area. / Renzi, Chiara; Bruns, Patrick; Heise, Kirstin-Friederike; Zimerman, Maximo; Feldheim, Jan-Frederik; Hummel, Friedhelm; Röder, Brigitte.
in: J COGNITIVE NEUROSCI, Jahrgang 25, Nr. 5, 5, 2013, S. 790-801.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Spatial remapping in the audio-tactile ventriloquism effect: a TMS investigation on the role of the ventral intraparietal area.
AU - Renzi, Chiara
AU - Bruns, Patrick
AU - Heise, Kirstin-Friederike
AU - Zimerman, Maximo
AU - Feldheim, Jan-Frederik
AU - Hummel, Friedhelm
AU - Röder, Brigitte
PY - 2013
Y1 - 2013
N2 - Previous studies have suggested that the putative human homologue of the ventral intraparietal area (hVIP) is crucially involved in the remapping of tactile information into external spatial coordinates and in the realignment of tactile and visual maps. It is unclear, however, whether hVIP is critical for the remapping process during audio-tactile cross-modal spatial interactions. The audio-tactile ventriloquism effect, where the perceived location of a sound is shifted toward the location of a synchronous but spatially disparate tactile stimulus, was used to probe spatial interactions in audio-tactile processing. Eighteen healthy volunteers were asked to report the perceived location of brief auditory stimuli presented from three different locations (left, center, and right). Auditory stimuli were presented either alone (unimodal stimuli) or concurrently to a spatially discrepant tactile stimulus applied to the left or right index finger (bimodal stimuli), with the hands adopting either an uncrossed or a crossed posture. Single pulses of TMS were delivered over the hVIP or a control site (primary somatosensory cortex, SI) 80 msec after trial onset. TMS to the hVIP, compared with the control SI-TMS, interfered with the remapping of touch into external space, suggesting that hVIP is crucially involved in transforming spatial reference frames across audition and touch.
AB - Previous studies have suggested that the putative human homologue of the ventral intraparietal area (hVIP) is crucially involved in the remapping of tactile information into external spatial coordinates and in the realignment of tactile and visual maps. It is unclear, however, whether hVIP is critical for the remapping process during audio-tactile cross-modal spatial interactions. The audio-tactile ventriloquism effect, where the perceived location of a sound is shifted toward the location of a synchronous but spatially disparate tactile stimulus, was used to probe spatial interactions in audio-tactile processing. Eighteen healthy volunteers were asked to report the perceived location of brief auditory stimuli presented from three different locations (left, center, and right). Auditory stimuli were presented either alone (unimodal stimuli) or concurrently to a spatially discrepant tactile stimulus applied to the left or right index finger (bimodal stimuli), with the hands adopting either an uncrossed or a crossed posture. Single pulses of TMS were delivered over the hVIP or a control site (primary somatosensory cortex, SI) 80 msec after trial onset. TMS to the hVIP, compared with the control SI-TMS, interfered with the remapping of touch into external space, suggesting that hVIP is crucially involved in transforming spatial reference frames across audition and touch.
KW - Acoustic Stimulation
KW - Adult
KW - Analysis of Variance
KW - Evoked Potentials, Somatosensory
KW - Female
KW - Functional Laterality
KW - Humans
KW - Male
KW - Neural Pathways
KW - Parietal Lobe
KW - Photic Stimulation
KW - Psychomotor Performance
KW - Reaction Time
KW - Sound Localization
KW - Space Perception
KW - Touch Perception
KW - Transcranial Magnetic Stimulation
KW - Young Adult
U2 - 10.1162/jocn_a_00362
DO - 10.1162/jocn_a_00362
M3 - SCORING: Journal article
C2 - 23363411
VL - 25
SP - 790
EP - 801
JO - J COGNITIVE NEUROSCI
JF - J COGNITIVE NEUROSCI
SN - 0898-929X
IS - 5
M1 - 5
ER -