Analyse des troubles du langage au cours des lesions de l'aire de broca

Hécaen, H.; Consoli, S

doi:10.1016/0028-3932(73)90024-9

Cited by 64 publications

(14 citation statements)

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“…The present paper focuses on this last issue, taking into account the considerable progress that has recently been made in neuroimaging methods. The involvement of parietal cortex in number processing was initially discovered on the basis of lesion data (Gerstmann, 1940;Hécaen, Angelergues, & Houillier, 1961;Henschen, 1919). Subsequently, a systematic activation of the parietal lobes during calculation, together with precentral and prefrontal cortices, was discovered (Roland & Friberg, 1985) and extensively replicated using positron emission tomography (PET) Pesenti, Thioux, Seron, & De Volder, 2000;Zago, Pesenti, Mellet, Crivello, Mazoyer, & Tzourio-Mazoyer, 2001) and later fMRI (Burbaud, Camus, Guehl, Bioulac, Caille, & Allard, 1999;Rueckert et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Three Parietal Circuits for Number Processing

Dehaene

Piazza

Pinel

et al. 2003

Cognitive Neuropsychology

2,126

207

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Did evolution endow the human brain with a predisposition to represent and acquire knowledge about numbers? Although the parietal lobe has been suggested as a potential substrate for a domain-specific representation of quantities, it is also engaged in verbal, spatial, and attentional functions that may contribute to calculation. To clarify the organisation of number-related processes in the parietal lobe, we examine the three-dimensional intersection of fMRI activations during various numerical tasks, and also review the corresponding neuropsychological evidence. On this basis, we propose a tentative tripartite organisation. The horizontal segment of the intraparietal sulcus (HIPS) appears as a plausible candidate for domain specificity: It is systematically activated whenever numbers are manipulated, independently of number notation, and with increasing activation as the task puts greater emphasis on quantity processing. Depending on task demands, we speculate that this core quantity system, analogous to an internal "number line," can be supplemented by two other circuits. A left angular gyrus area, in connection with other left-hemispheric perisylvian areas, supports the manipulation of numbers in verbal form. Finally, a bilateral posterior superior parietal system supports attentional orientation on the mental number line, just like on any other spatial dimension.

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Section: Introductionmentioning

confidence: 99%

Three Parietal Circuits for Number Processing

Dehaene

Piazza

Pinel

et al. 2003

Cognitive Neuropsychology

2,126

207

2,116

View full text Add to dashboard Cite

show abstract

“…Similarly, Wernicke [73] reported two patients with severe language comprehension deficits, apparently due to the presence of a lesion in the posterior superior temporal gyrus of the left hemisphere. In contrast, the incidence of aphasic deficits in patients with lesions to the right hemisphere (RH) is far less common [31].…”

Section: Introductionmentioning

confidence: 99%

Handedness, hemispheric asymmetries, and joke comprehension

Coulson

Lovett

2004

Cognitive Brain Research

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To address the impact of differences in language lateralization on joke comprehension, event-related brain potentials (ERPs) were recorded as 16 left-and 16 right-handed adults read one-line jokes and non-funny control stimuli (''A replacement player hit a home run with my girl/ball,''). In right-handers, jokes elicited a late positivity 500 -900 ms post-stimulus onset that was largest over right hemisphere (RH) centro-parietal electrode sites, and a slow sustained negativity over anterior left lateral sites. In left-handers, jokes elicited a late positivity 500 -900 ms post-onset that was larger and more broadly distributed than in the right-handers' ERPs. In right-handed women, the late positivity was larger over RH electrode sites. In left-handed women, the late positivity was bilaterally symmetric. The highly asymmetric slow sustained negativity over left anterior electrode sites was absent from left-handers' ERPs to jokes. Differences may reflect more efficient inter-hemispheric communication in the left-handers, as they are reputed to have relatively larger corpus callosal areas than right-handers. Results support the portrait of more bilateral language representation among left-handers, and suggest language lateralization affects highlevel language comprehension tasks such as joke comprehension. D 2004 Elsevier B.V. All rights reserved.Theme: Neural basis of behavior Topic: Cognition

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“…In particular, mathematics and language may be the same. These problems concerned several great European neurologists (Hecaen et al 1961;Henschen 1920; see also Grafman 1983 andKahn &Whitaker 1991, for historical reviews), to whom it was clear that deficits in mathematical abilities must be set apart from language, memory, or attentional problems. They realized that intact mathematical abilities can easily be masked by deficits to cognitive systems that are normally recruited for mathematical tasks.…”

Section: Language and Mathematics: Two Distinct Combinatorial Capacitiesmentioning

confidence: 99%

“…They realized that intact mathematical abilities can easily be masked by deficits to cognitive systems that are normally recruited for mathematical tasks. Thus, in the early days, Hecaen et al (1961) proposed in their pioneering work a distinction between primary (independent) and secondary (consequent) acalculia. The former -our current object of inquiry -is a varied disturbance.…”

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confidence: 99%

Could grammatical encoding and grammatical decoding be subserved by the same processing module?

Kempen¹

2000

Behav. Brain Sci.

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Advances in neuroimaging technology have increased our knowledge of the neuroanatomy of higher functions of the central nervous system: It is now possible to get a glimpse of the brain while it is in action. However, this progress would not have been possible without improved understanding of the knowledge base and operations that underlie complex behavior. Parallel to the greater precision of the technology, some progress has been made in our understanding of the cognitive architecture that underlies certain behavioral domains. In the study of brain-language relations, theoretical developments in linguistics have gone hand in hand with imaging, making a joint contribution to behavioral neurology. After several decades of the study of language and the brain from a linguistic angle, there is now a relatively dense body of facts that can be seriously evaluated. This target article will review central results and use them to motivate some novel conclusions about the representation of language in the human cerebral cortex. The discussion will revolve around the choice of unit of behavioral analysis and its theoretical import. An outlook on language derived from current linguistic theory can lead to a new and more precise picture of language and the brain.The old Connectionist school -led by Broca, Wernicke, and Lichtheim (see Lichtheim 1885, for a comprehensive exposition) and revived in our time by the late Norman Geschwind (e.g., 1970;1979) -fortified belief in the existence of cerebral language centers. As clinicians, these authors mostly emphasized the patients' communicative skills, viewing language as a collection of activities, practiced in the service of communication: speaking, listening, reading, writ- Abstract: A new view of the functional role of the left anterior cortex in language use is proposed. The experimental record indicates that most human linguistic abilities are not localized in this region. In particular, most of syntax (long thought to be there) is not located in Broca's area and its vicinity (operculum, insula, and subjacent white matter). This cerebral region, implicated in Broca's aphasia, does have a role in syntactic processing, but a highly specific one: It is the neural home to receptive mechanisms involved in the computation of the relation between transformationally moved phrasal constituents and their extraction sites (in line with the Trace-Deletion Hypothesis). It is also involved in the construction of higher parts of the syntactic tree in speech production. By contrast, basic combinatorial capacities necessary for language processing -for example, structure-building operations, lexical insertion -are not supported by the neural tissue of this cerebral region, nor is lexical or combinatorial semantics. The dense body of empirical evidence supporting this restrictive view comes mainly from several angles on lesion studies of syntax in agrammatic Broca's aphasia. Five empirical arguments are presented: experiments in sentence comprehension, cross-linguistic considerations (where a...

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Analyse des troubles du langage au cours des lesions de l'aire de broca

Cited by 64 publications

References 3 publications

Three Parietal Circuits for Number Processing

Three Parietal Circuits for Number Processing

Handedness, hemispheric asymmetries, and joke comprehension

Could grammatical encoding and grammatical decoding be subserved by the same processing module?

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