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The effect of prior visual information on recognition of speech and sounds
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In: CEREB CORTEX , 18 (3) 598 - 609. (2008) (2008)
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Abstract:
To identify and categorize complex stimuli such as familiar objects or speech, the human brain integrates information that is abstracted at multiple levels from its sensory inputs. Using cross-modal priming for spoken words and sounds, this functional magnetic resonance imaging study identified 3 distinct classes of visuoauditory incongruency effects: visuoauditory incongruency effects were selective for 1) spoken words in the left superior temporal sulcus (STS), 2) environmental sounds in the left angular gyrus (AG), and 3) both words and sounds in the lateral and medial prefrontal cortices (IFS/mPFC). From a cognitive perspective, these incongruency effects suggest that prior visual information influences the neural processes underlying speech and sound recognition at multiple levels, with the STS being involved in phonological, AG in semantic, and mPFC/IFS in higher conceptual processing. In terms of neural mechanisms, effective connectivity analyses (dynamic causal modeling) suggest that these incongruency effects may emerge via greater bottom-up effects from early auditory regions to intermediate multisensory integration areas (i.e., STS and AG). This is consistent with a predictive coding perspective on hierarchical Bayesian inference in the cortex where the domain of the prediction error (phonological vs. semantic) determines its regional expression (middle temporal gyrus/STS vs. AG/intraparietal sulcus).
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Keyword:
ANTERIOR CINGULATE CORTEX; AUDIOVISUAL SPEECH; AUDITORY-CORTEX; cross-modal priming; CROSSMODAL BINDING; dynamic causal modeling; effective connectivity; FUNCTIONAL MRI; HUMAN BRAIN; multisensory integration; OBJECT RECOGNITION; predictive coding; SEMANTIC SYSTEM; semantics; SUPERIOR TEMPORAL SULCUS
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URL: http://discovery.ucl.ac.uk/136428/
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2 |
Language control in the bilingual brain
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In: SCIENCE , 312 (5779) 1537 - 1540. (2006) (2006)
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Two distinct neural mechanisms for category-selective responses
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In: CEREB CORTEX , 16 (3) 437 - 445. (2006) (2006)
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Two approaches to repetition suppression.
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In: Hum Brain Mapp , 27 (5) pp. 411-416. (2006) (2006)
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Language control in the bilingual brain
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In: Science , 312 (5779) pp. 1537-1540. (2006) (2006)
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Language control in the bilingual brain
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In: Science , 312 (5779) pp. 1537-1540. (2006) (2006)
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How reading differs from object naming at the neuronal level
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In: NeuroImage , 29 (2) pp. 643-648. (2006) (2006)
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How reading differs from object naming at the neuronal level
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In: NEUROIMAGE , 29 (2) 643 - 648. (2006) (2006)
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Reading skills after left anterior temporal lobe resection: an fMRI study
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In: BRAIN , 128 1377 - 1385. (2005) (2005)
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Structural and functional aspects of L2 acquisition
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In: In: Green, DW and Meisel, JM, (eds.) (Proceedings) Colloquium on Neuroimaging studies of representation and processing in bilinguals. 5th International Symposium on Bilingualism, March 21st-23rd. (pp. pp. 61-63). : Barcelona. (2005) (2005)
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Degenerate neuronal systems sustaining cognitive functions
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In: JOURNAL OF ANATOMY , 205 (6) 433 - 442. (2004) (2004)
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Retrieval of abstract semantics
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In: NEUROIMAGE , 22 (1) 164 - 170. (2004) (2004)
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An fMRI study of syntactic adaptation
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In: J COGNITIVE NEUROSCI , 16 (4) 702 - 713. (2004) (2004)
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The neural areas that control the retrieval and selection of semantics.
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In: Neuropsychologia , 42 (9) pp. 1269-1280. (2004) (2004)
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Differentiating the neural activation pattern for German and English in highly proficient bilinguals
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In: In: (Proceedings) Conference of the Neuroscience Society, 18-20th April. : San Francisco. (2004) (2004)
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Structural plasticity in the bilingual brain - Proficiency in a second language and age at acquisition affect grey-matter density.
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In: NATURE , 431 (7010) 757 - 757. (2004) (2004)
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Normal and pathological reading: converging data from lesion and imaging studies
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In: NEUROIMAGE , 20 S30 - S41. (2003) (2003)
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