WOBIB: 164 - Calvert, et al. (1999) Response amplificati ...
 
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Gemma A. Calvert; Michael J. Brammer; Edward T. Bullmore; Ruth Campbell; S. D. Iversen; Anthony S. David. Response amplification in sensory-specific cortices during crossmodal binding. NeuroReport 10(12):2619-2623, 1999. PMID: 10574380. FMRIDCID: . WOBIB: 164.

Integrating information across the senses can enhance our ability to detect and classify stimuli in the environment. For example, auditory speech perception is substantially improved when the speaker's face is visible. In an fMRI study designed to investigate the neural mechanisms underlying these crossmodal behavioural gains, bimodal (audio-visual) speech was contrasted against both unimodal (auditory and visual) components. Significant response enhancements in auditory (BA 41/42) and visual (V5) cortices were detected during bimodal stimulation. This effect was found to be specific to semantically congruent crossmodal inputs. These data suggest that the perceptual improvements effected by synthesizing matched multisensory inputs are realised by reciprocal amplification of the signal intensity in participating unimodal cortices.

Asymmetry: 0.27344 (left: -1, right: +1)

VRML2 file (66 Kb)

1 Bimodal audiovisual speech-reading. Simultaneous hearing and seeing with lip-reading of digits versus unimodal viewing or unimodal hearing digits. WOEXP: 499.
2 Unimodal audio or visual perception of digits. Unimodal viewing or hearing digits versus simultaneous hearing and seeing with lip-reading. WOEXP: 500.


corner cube of WOBIB_164

Related - positive correlated volumes

+1: 1.00000 Gemma A. Calvert; Michael J. Brammer; Edward T. Bullmore; Ruth Campbell; S. D. Iversen; Anthony S. David. Response amplification in sensory-specific cortices during crossmodal binding. NeuroReport 10(12):2619-2623, 1999. PMID: 10574380. FMRIDCID: . WOBIB: 164.

+2: 0.54075 J. Downar; A. P. Crawley; D. J. Mikulis; K. D. Davis. A multimodal cortical network for the detection of changes in the sensory environment. Nature Neuroscience 3(3):277-283, 2000. PMID: 10700261. DOI: 10.1038/72991. FMRIDCID: . WOBIB: 148.

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Antirelated - negatively correlated volumes

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-5: 0.00130 I. Indovina; J. N. Sanes. On somatotopic representation centers for finger movements in human primary motor cortex and supplementary motor area. NeuroImage 13(6 Pt 1):1027-34, 2001. PMID: 11352608. DOI: 10.1006/nimg.2001.0776. WOBIB: 11.

Bib -> Asymmetry | Author | ICA | NMF | Novelty | Statistics | SVD | Title | WOBIB ]
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