Hemispheric specialization for language

Josse, Goulven; Tzourio‐Mazoyer, Nathalie

doi:10.1016/j.brainresrev.2003.10.001

Cited by 192 publications

(120 citation statements)

References 88 publications

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“…Given the correlative nature of such studies, it is critical that the structure-performance relationships identified are consistent with findings from functional MRI, electrophysiological, and lesion research. The strongly lateralized findings presented here are consistent with robust evidence for left language lateralization in right-handed individuals Josse and Tzourio-Mazoyer, 2004;Tyler and MarslenWilson, 2008;Turken and Dronkers, 2011), strengthening the potential of GWC as a marker of focal neuronal integrity. The strictly unidirectional relationship between GWC and cognitive test scores is worth noting.…”

Section: Discussionsupporting

confidence: 85%

“…Each participant's index Standard Score reflects their performance relative to their age-matched peers (within 5-10 years). We chose to analyze VCI and WMI indices for their neuroanatomical localizing potential, given prior evidence of hemispheric and regionally specific neural substrates for these indices (Gläscher et al, 2009), and robust neuropsychological evidence for left perisylvian involvement in speech and language processes (Damasio and Damasio, 2000;Woermann et al, 2003;Josse and Tzourio-Mazoyer, 2004;Turken and Dronkers, 2011). The VCI is comprised of three subtests (Vocabulary, Similarities, and Information) that assess expressive vocabulary, verbal abstract reasoning, and verbal conceptualization; the WMI is comprised of three subtests (Digit Span, Letter-Number Sequencing, and Arithmetic) that assess phonological attention and concentration.…”

Section: Methodsmentioning

confidence: 99%

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Individual Differences in Verbal Abilities Associated with Regional Blurring of the Left Gray and White Matter Boundary

Blackmon¹,

Halgren²,

Barr³

et al. 2011

J. Neurosci.

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Blurring of the cortical gray and white matter border on MRI is associated with normal aging, pathological aging, and the presence of focal cortical dysplasia. However, it remains unclear whether normal variations in signal intensity contrast at the gray and white matter junction reflect the functional integrity of subjacent tissue. This study explores the relationship between verbal abilities and gray and white matter contrast (GWC) in healthy human adults. Participants were scanned at 3 T MRI and administered standardized measures of verbal expression and verbal working memory. GWC was estimated by calculating the non-normalized T1 image intensity contrast above and below the cortical gray/white matter interface. Spherical averaging and whole-brain correlational analyses were performed. Sulcal regions exhibited higher contrast compared to gyral regions. We found a strongly lateralized and regionally specific profile with reduced verbal expression abilities associated with blurring in left hemisphere inferior frontal cortex and temporal pole. Reduced verbal working memory was associated with blurring in widespread left frontal and temporal cortices. Such lateralized and focal results provide support for GWC as a measure of regional functional integrity and highlight its potential role in probing the neuroanatomical substrates of cognition in healthy and diseased populations.

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Section: Discussionsupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Individual Differences in Verbal Abilities Associated with Regional Blurring of the Left Gray and White Matter Boundary

Blackmon¹,

Halgren²,

Barr³

et al. 2011

J. Neurosci.

View full text Add to dashboard Cite

show abstract

“…[3,65,79]). It will also be important to understand gender and other individual differences [24,67,81] as well as potential associations between anatomical asymmetry and language lateralization [20,21,36,37,50] for Chinese.…”

Section: Discussionmentioning

confidence: 99%

Cerebral asymmetry in children when reading Chinese characters

Xue

Dong

Chen

et al. 2005

Cognitive Brain Research

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This study examined cerebral asymmetry, especially in the hierarchical visual system, when reading Chinese characters. Twelve righthanded Chinese children (mean age = 11.6 years) were scanned while performing semantic and phonological tasks. Strong leftward asymmetry was found in the left inferior frontal cortex (BA44/45/47), the parietal lobule (BA40), and the cingulate cortex (BA24/32). In the visual system, we found significant left-hemispheric dominance in the fusiform cortex (BA19/37), but no asymmetry was found in the primary visual cortex (BA17/18). The differential results for the primary visual cortex versus high-order visual cortex (i.e., the fusiform cortex) are discussed in terms of the contribution of the logographic nature of Chinese characters to the asymmetry pattern in the hierarchical visual system. D 2005 Elsevier B.V. All rights reserved.Theme: Neural basis of behavior Topic: Cognition

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“…Especially important are the areas in the Heschl's gyrus (HG) as well as in the middle and superior temporal gyri (STG) and sulci (STS) (Tervaniemi and Hugdahl, 2003;Toga and Thompson, 2003;Josse and Tzourio-Mazoyer, 2004;Peretz and Zatorre, 2005). In general, the dominant role of the left hemisphere in speech processing and, to a lesser extent, the role of the right hemisphere in music processing has been highlighted.…”

Section: Introductionmentioning

confidence: 99%

From Air Oscillations to Music and Speech: Functional Magnetic Resonance Imaging Evidence for Fine-Tuned Neural Networks in Audition

Tervaniemi¹,

Szameitat²,

Kruck³

et al. 2006

J. Neurosci.

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In the auditory modality, music and speech have high informational and emotional value for human beings. However, the degree of the functional specialization of the cortical and subcortical areas in encoding music and speech sounds is not yet known. We investigated the functional specialization of the human auditory system in processing music and speech by functional magnetic resonance imaging recordings. During recordings, the subjects were presented with saxophone sounds and pseudowords /ba:ba/ with comparable acoustical content. Our data show that areas encoding music and speech sounds differ in the temporal and frontal lobes. Moreover, slight variations in sound pitch and duration activated thalamic structures differentially. However, this was the case with speech sounds only while no such effect was evidenced with music sounds. Thus, our data reveal the existence of a functional specialization of the human brain in accurately representing sound information at both cortical and subcortical areas. They indicate that not only the sound category (speech/music) but also the sound parameter (pitch/duration) can be selectively encoded.

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Hemispheric specialization for language

Cited by 192 publications

References 88 publications

Individual Differences in Verbal Abilities Associated with Regional Blurring of the Left Gray and White Matter Boundary

Individual Differences in Verbal Abilities Associated with Regional Blurring of the Left Gray and White Matter Boundary

Cerebral asymmetry in children when reading Chinese characters

From Air Oscillations to Music and Speech: Functional Magnetic Resonance Imaging Evidence for Fine-Tuned Neural Networks in Audition

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