Perisylvian language networks of the human brain

  title={Perisylvian language networks of the human brain},
  author={Marco Catani and Derek K. Jones and Dominic H. Ffytche},
  journal={Annals of Neurology},
Early anatomically based models of language consisted of an arcuate tract connecting Broca's speech and Wernicke's comprehension centers; a lesion of the tract resulted in conduction aphasia. However, the heterogeneous clinical presentations of conduction aphasia suggest a greater complexity of perisylvian anatomical connections than allowed for in the classical anatomical model. This article re‐explores perisylvian language connectivity using in vivo diffusion tensor magnetic resonance imaging… 

Perisylvian white matter connectivity in the human right hemisphere

The present DTI findings suggest that the perisylvian inferior parietal, superior temporal, and lateral frontal corticies are tightly connected not only in the human left but also in thehuman right hemisphere.

Evaluating the arcuate fasciculus with combined diffusion‐weighted MRI tractography and electrocorticography

This study found that language‐related sites of the temporal lobe were far more likely to be directly connected to the inferior precentral gyrus through the arcuate fasciculus, and tractography was a significant predictor of frontal language-related ECoG findings.

DTI tractography of the human brain's language pathways.

The findings of DTI tractography are combined with a recent model of brain language processing to explain 6 aphasia syndromes.

Contemporary model of language organization: an overview for neurosurgeons.

In tracing the historical advancements in the understanding of speech processing, the authors hope to not only provide practicing neurosurgeons with additional information that will aid in surgical planning and prevent postoperative morbidity, but also underscore the fact that neurosurgeon are in a unique position to further advance the authors' understanding of the anatomy and functional organization of language.

Neuroanatomical prerequisites for language functions in the maturing brain.

FMRI and DTI data converge to indicate that adults make use of a more confined language network than children based on ongoing maturation of the structural network and suggest the brain's plasticity to adjust its function to available structural prerequisites.

The perisylvian language network and language analytical abilities

Dissociating the Human Language Pathways with High Angular Resolution Diffusion Fiber Tractography

The anatomical connectivity of ventrolateral frontal areas 44 and 45, which in the human brain constitute Broca's region, has been revisited on the basis of experimental anatomical tracer evidence in

Hemispheric asymmetry of the arcuate fasciculus

Dominance of the FT tract in the language dominant hemisphere was demonstrated for the first time in a patient population and implicated a clinical utility of DTT for non-invasive evaluation of language lateralization.



Occipito-temporal connections in the human brain.

The results suggest that a major associative connection between the occipital and anterior temporal lobe is provided by a fibre bundle whose origin, course and termination are consistent with classical descriptions of the ILF in man and with monkey visual anatomy.

Separate neural subsystems within 'Wernicke's area'.

The results are compatible with an hypothesis that the posterior superior temporal cortex is specialized for processes involved in the mimicry of sounds, including repetition, the specific role of the posterior left superior temporal sulcus being to transiently represent phonetic sequences, whether heard or internally generated and rehearsed.

The anatomy of language: contributions from functional neuroimaging

  • C. Price
  • Psychology, Biology
    Journal of anatomy
  • 2000
From functional imaging results, a new anatomically constrained model of word processing is proposed which reconciles the anatomical ambitions of the 19th Century neurologists and the cognitive finesse of the 20th Century cognitive models.

Functional connectivity in the human language system: a cortico-cortical evoked potential study.

The present study revealed a bidirectional connection between Broca's and Wernicke's areas probably through the arcuate fasciculus and/or the cortico-subcortico-cortical pathway, which suggests that perisylvian and extrasylVian language areas participate in the language system as components of a network by means of feed-forward and feed-back projections.

The evolutionary origin of the language areas in the human brain. A neuroanatomical perspective

Transcortical sensory aphasia: revisited and revised.

The results suggest that TSA may result from a one-way disruption between left hemisphere phonology and lexical-semantic processing.

Temporal and Topographical Characterization of Language Cortices Using Intraoperative Optical Intrinsic Signals

This study is consistent with task-specific semantic and phonologic regions within Broca's and Wernicke's areas and also is the first report of response profile differences dependent on cortical region and language task.

Functional heterogeneity of left inferior frontal cortex as revealed by fMRI

The recruitment of two overlapping but dissociable systems for the two tasks are suggested, and functional heterogeneity within the left IFG (Broca's area) is demonstrated, where the opercular portion is responsible for obtaining access to words through a phonemic/articulatory route.

The neural basis of language.

Disconnection and cerebral metabolism. The case of conduction aphasia.

Ten patients with conduction aphasia were studied with computed tomography and 18-F-fluorodeoxyglucose positron emission tomography to examine glucose metabolism and results suggest that disconnection between posterior and anterior language areas may not be the best anatomical explanation for conductionAphasia.