Bilingual language processing after a lesion in the left thalamic and temporal regions A case report with early childhood onset

Lieshout, Pascal van; Renier, W.O.; Eling, Paul; Bot, Christine Le; Slis, I.H.

doi:10.1016/0093-934x(90)90109-t

Cited by 14 publications

(7 citation statements)

References 47 publications

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“…The deficit of repetition found in these children, in contrast to that of the adults, could reflect differences in lesion location within the thalamus, and the greater extent of the lesion and/or greater involvement of the thalamus in memory functioning in childhood (Van Lieshout et al 1990). Three of our patients evidenced specific memory problems (see Table VI).…”

Section: Discussionmentioning

confidence: 89%

“…'subcortical transcortical' (Alexander 1992, Naessar 1992. Van Lieshout et al (1990) suggest that the language difficulties in their young patient with thalamic pathology was mediated by shortterm auditory memory difficulties, based on greater memory than language problems and types of language difficulties. They further speculate that such verbal-memory deficits affected the normal process of language acquisition.…”

Section: Discussionmentioning

confidence: 99%

“…Recently, Kothare et al (1998) reported acute confusion and mutism as a presentation of thalamic strokes secondary to deep cerebral venous thrombosis. Van Lieshout et al (1990) reported on the longitudinal follow-up of a bilingual girl presenting at age 3 years with seizures and a thalamic tumor (which on MRI scans 15 years later, involved the posterior half of the thalamus, posterior limb of the internal capsule, portions of the external capsule, and medial part of the temporal lobe extending into the insula) treated with radiation, and exhibiting at age 18 years deficits in comprehension, non-word repetition, syntactic processing, word fluency, and confrontational naming.…”

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confidence: 99%

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Acquired aphasia in children after surgical resection of left‐thalamic tumors

Nass¹,

Boyce²,

Leventhal³

et al. 2000

Develop Med Child Neuro

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Five children (three males, two females; four right‐, one left‐handed; age range 6 to 14 years) who developed aphasia after gross‐total excision of left predominantly thalamic tumors are reported. Three patients had Broca aphasia, one had mixed transcortical aphasia, and one patient had conduction aphasia. In the months after surgery, three children improved while receiving radiation and/or chemotherapy, although none recovered completely. Two patients with malignant tumors developed worsening aphasia when the tumor recurred, and later died. Two of three patients tested had visuospatial difficulties in addition to language deficits. Attention and executive functioning were affected in three of three patients tested. Memory, verbal and/or visual functioning, were affected in four of four patients tested. Both patients who were tested showed transient right hemineglect. Two of two patients tested were probably apraxic. The wide range of deficits in these children highlights the importance of the thalamus and other subcortical structures in developing cognition.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Acquired aphasia in children after surgical resection of left‐thalamic tumors

Nass¹,

Boyce²,

Leventhal³

et al. 2000

Develop Med Child Neuro

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“…While subcortical aphasia has been extensively studied in adults with vascular lesions (for a review see Cappa and Abutalebi, 1999), only a few childhood cases have been reported (Ferro et al, 1982;Aram et al, 1983;Cranberg et al, 1987;Van Lieshout et al, 1990;Martins et al, 1993;Garg and DeMyer, 1995;Kieffer-Renauz et al, 1996;Nass et al, 2000). In further contrast to a long-standing tradition in the study of adult aphasia, the literature is sparse with regard to bilingual or polyglot aphasia in children (Bouquet et al, 1981;Fabbro and Paradis, 1995).…”

Section: Introductionmentioning

confidence: 94%

Pathophysiology of language switching and mixing in an early bilingual child with subcortical aphasia

et al. 2005

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Acquired aphasia after circumscribed vascular subcortical lesions has not been reported in bilingual children. We report clinical and neuroimaging findings in an early bilingual boy who incurred equally severe transcortical sensory aphasia in his first language (L1) and second language (L2) after a posterior left thalamic hemorrhage. Following recurrent bleeding of the lesion the aphasic symptoms substantially aggravated. Spontaneous pathological language switching and mixing were found in both languages. Remission of these phenomena was reflected on brain perfusion SPECT revealing improved perfusion in the left frontal lobe and left caudate nucleus. The parallelism between the evolution of language symptoms and the SPECT findings may demonstrate that a subcortical left frontal lobe circuity is crucially involved in language switching and mixing.

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“…So far, the results are inconsistent. On the one hand, research has shown that brain lesion causes equal deficit of working memory capacity in bilinguals' two languages, which suggests common or largely overlapping neural networks for WM processing in L1 and L2 (van Lieshout et al, 1990;Warren et al, 2000). In addition, several functional imaging studies of bilinguals have found common activation for the two languages in the abovementioned three components of the working memory system: the executive system (Hernandez et al, 2000(Hernandez et al, , 2001, the speech/rehearsal system (Hasegawa et al, 2002;Kim et al, 1997;Klein, 2003;Klein et al, 1995Klein et al, , 1999Rodriguez-Fornells et al, 2002), and the retention/storage system (Hasegawa et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Mapping of verbal working memory in nonfluent Chinese–English bilinguals with functional MRI

et al. 2004

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Existing cognitive and neural imaging studies have suggested a frontoparietal network of multiple, cooperative components for verbal working memory (WM). We used functional MRI to investigate whether this neural network is also involved in the processing of second language by nonfluent bilinguals. Twelve (five males, seven females) native Chinese speakers who had limited English proficiency were scanned while performing working memory tasks in Chinese and English. They were asked to make judgment continuously whether the word presented on the screen was semantically related to (i.e., the semantic tasks) another word presented two words earlier. On a different task (i.e., the phonological tasks), they were asked to make judgment whether the target word rhymed with the other word. A naming and judgment task in each language was adopted to control for the visual process, initial lexical process, and motor responses. Behavioral data showed that subjects performed better at tasks in their native language (Chinese, L1) than in English (L2). Imaging results showed that all working memory tasks in both L1 and L2 elicited a very similar pattern of left-hemisphere-dominated activation in the dorsolateral prefrontal cortex, pars opercularis region, pars triangularis region, precentral cortex, and parietal lobule. Consistent with the behavioral data, the volume of activation in the left opercularis region, left parietal lobule, and right precentral region was greater for L2 than for L1. These results suggest that working memory in L1 and L2 is mediated by a unitary neural system (i.e., frontoparietal region), which is capable of recruiting surrounding cortical resources to meet the increased computational demand caused by low L2 proficiency.

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Bilingual language processing after a lesion in the left thalamic and temporal regions A case report with early childhood onset

Cited by 14 publications

References 47 publications

Acquired aphasia in children after surgical resection of left‐thalamic tumors

Acquired aphasia in children after surgical resection of left‐thalamic tumors

Pathophysiology of language switching and mixing in an early bilingual child with subcortical aphasia

Mapping of verbal working memory in nonfluent Chinese–English bilinguals with functional MRI

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