Non-verbal disturbances in crossed aphasia

Castro-Caldas, Alexandre; Confraria, A.; Poppe, Patricia

doi:10.1080/02687038708248863

Cited by 46 publications

(24 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on this hypotheses we could predict that in these low educated groups, provided the subjects were right‐handed, there would be a greater incidence of crossed aphasia (a term coined by Byron Bramwell, 1899 meaning aphasia following a right hemisphere lesion in a right‐handed subject), and a better recuperation of language skills following aphasia. This is not what we found when we reviewed the cases of crossed aphasia (Castro‐Caldas & Confraria, 1984, 1987). This suggestion was also supported in 1956 by Critchley.…”

contrasting

confidence: 67%

Learning orthography in adulthood: A magnetoencephalographic study

Castro-Caldas

Nunes

Maestú³

et al. 2009

Journal of Neuropsychology

Self Cite

View full text Add to dashboard Cite

Previous work demonstrated that there were differences between literate and comparable illiterate adult subjects. These differences were found in the performance on several tests and on patterns of activation on PET and fMRI. In the present study subjects that learned to read and to write in adulthood (being previously completely illiterate) were compared to controls, that is subjects that learned at school at the proper age. Magnetoencephalography was done while subjects were reading words. Results showed that, although the reading performance was the same in both groups while performing the task, the pattern of source distribution was different between groups. There were more late sources in right temporo-parietal areas of late literates compared to controls and more late sources in left inferior frontal cortex in control subjects. It is concluded that learning to read in adulthood is a process supported by different brain structures from the ones used when learning occurs at the proper age. This may suggest that the same task can be similarly performed by relying on diverse functional brain anatomic networks.

show abstract

contrasting

confidence: 67%

Learning orthography in adulthood: A magnetoencephalographic study

Castro-Caldas

Nunes

Maestú³

et al. 2009

Journal of Neuropsychology

Self Cite

View full text Add to dashboard Cite

show abstract

“…Later on we had the opportunity of studying cases of crossed aphasia and we never found an illiterate subject with this syndrome (CastroCaldas & Confraria, 1984;Castro-Caldas, Poppe, & Confraria, 1987). However, A. F. Wechsler (1976) reported a case of crossed aphasia, suggesting that illiteracy was an important cause for the unusual hemispheric representation of functions in this patient.…”

Section: Problems Of Cerebral Dominancementioning

confidence: 89%

Targeting regions of interest for the study of the illiterate brain

Castro‐Caldas

2004

Int J Psychol

View full text Add to dashboard Cite

T his paper reviews a work project that uses illiteracy as a tool to understand the way the brain adapts to information. The project follows the exploration of certain targets that can be identified with the functions of reading and writing, both from the functional and from the anatomical points of view. Results concerning visual processing, cross-modal operations (audiovisual and visuotactile), and interhemispheric crossing of information are reported. Studies with magnetoencephalography, with positron emission tomography, and with functional magnetic resonance provided evidence that the absence of school attendance at the usual age constitutes a handicap for the development of certain biological processes that serve behavioural functioning. Differences between groups of literate and illiterate subjects were found in several areas: while dealing with phonology a complex pattern of brain activation was only present in literate subjects; the corpus callosum in the segment where the parietal lobe fibres cross was thinner in the illiterate group; the parietal lobe processing of both hemispheres was different between groups; and the occipital lobe processed information more slowly in cases that learned to read as adults compared to those that learned at the usual age. Some behavioural studies suggest that there are other operations that can be explored from the image point of view.C et article fait la revue d'un projet d'étude qui utilise l'analphabétisme comme outil pour comprendre la façon dont le cerveau s'adapte à l'information. Le projet poursuit l'exploration de certaines cibles qui peuvent être identifiées avec les fonctions de lecture et d'écriture, à la fois du point de vue fonctionnel et anatomique. Les résultats concernant le traitement visuel, les opérations trans-modales (audiovisuelles et visuotactiles) et le passage inter-hémisphérique de l'information sont rapportés. Les études utilisant la magnéto-encéphalographie, la tomographie avec émission de positrons et la résonance magnétique fonctionnelle ont démontré que l'absence de scolarisation à l'â ge adéquat constitue un handicap pour le développement de certains processus biologiques servant au fonctionnement comportemental. Des différences entre les groupes de participants alphabètes et analphabètes furent soulevées : lorsque les participants font des tâ ches de phonologie, un patron complexe d'activation cérébrale est présent seulement chez les alphabètes; chez le groupe analphabète, le corps calleux est plus mince dans le segment où traversent les fibres du lobe pariétal; le traitement du lobe pariétal des deux hémisphères est différent entre les groupes; et le lobe occipital traite l'information plus lentement dans les cas de l'apprentissage de la lecture à l'â ge adulte comparativement à l'apprentissage de la lecture à l'â ge adéquat. Des études comportementales suggèrent que d'autres opérations pourraient être explorées du point de vue de l'image.E ste estudio revisa una línea de investigació n que ha utilizado al analfabetismo como una herrami...

show abstract

“…As stated in the introduction, although there are several documented cases of crossed aphasia in the literature (Trojanowski et al, 1980;Hindson et al, 1984;Kapur and Dunkley, 1984;Basso et al, 1985;Alexander et al, 1989;Faglia and Vignolo, 1990;Rey et al, 1994;Stefanis et al, 1997;Nagaratnam et al, 1999), few of them thoroughly investigate associated neurobehavioural disorders (AbooBaker and Labauge, 1987;Castro-Caldas et al, 1987;Fournet et al, 1987;Nagaratnam et al, 1999). Furthermore, in some cases the deficits described were present only in the acute phase (Ludwig, 1939;Urbain et al, 1978;Henderson, 1983;Basso et al, 1985;Roebroeck et al, 1999); thus, it is possible that the linguistic and spatial functions tested were only partially represented in the damaged right hemisphere.…”

Section: Discussionmentioning

confidence: 98%

“…In some cases, the language disorder was associated with visuospatial deficits, suggesting that, also in subjects with inverted hemispheric dominance, the right hemisphere is responsible for both verbal and visuospatial functions (Henderson, 1983;Kapur and Dunkley, 1984;Basso et al, 1985;Faglia and Vignolo, 1990). However, few crossed aphasia studies have provided a detailed investigation of the variety of neurobehavioural disorders that can occur after right hemisphere damage (Aboo-Baker and Labauge, 1987;Castro-Caldas et al, 1987;Fournet et al, 1987;Nagaratnam et al, 1999).…”

Section: Introductionmentioning

confidence: 93%

Dissociation Between Personal and Extrapersonal Neglect in a Crossed Aphasia Study

Marangolo

Piccardi²,

Rinaldi³

2003

Neurocase

View full text Add to dashboard Cite

Several reports document crossed aphasia following a right cerebral infarct. However, few of them provide a detailed investigation of associated neuropsychological disorders. A personal neglect disorder with no difficulty in orienting attention in the contralesional space has not been frequently reported independently of lesion side for the language deficit. In most cases, the deficit is described in the acute period. We report the case of a patient who showed severe crossed aphasia several months after cerebral damage. In addition to his language deficit, he suffered from finger agnosia, acalculia, and right/left confusion. Although he was able to orient attention in the contralesional space, he had a persistent personal neglect disorder with severe difficulty in attending to his own body. Results suggest that right hemisphere language dominance does not preclude ipsilateral specialisation for other functions. Furthermore, the dissociation between the two spatial functions provides further confirmation that they are subserved by two independent systems.

show abstract

Non-verbal disturbances in crossed aphasia

Cited by 46 publications

References 36 publications

Learning orthography in adulthood: A magnetoencephalographic study

Learning orthography in adulthood: A magnetoencephalographic study

Targeting regions of interest for the study of the illiterate brain

Dissociation Between Personal and Extrapersonal Neglect in a Crossed Aphasia Study

Contact Info

Product

Resources

About