Disturbances of written language and associated abilities following damage to the right hemisphere

1985 ◽  
Vol 6 (3) ◽  
pp. 231-260 ◽  
Author(s):  
Yvan Lebrun
Keyword(s):  
Brain Damage ◽  
Right Hemisphere ◽  
Written Language ◽  
Visual Neglect ◽  
Right Brain ◽  
The Right

The various anomalies which occur in the writing of people with right brain damage are described. They are compared with the reading and drawing impairments that these patients also show. In particular, the phenomenon of unilateral visual neglect is analyzed and hypotheses as to the nature of this disorder are put forward.

scholarly journals Artistic Production Following Brain Damage: A Study of Three Artists

Leonardo ◽  
2011 ◽  
Vol 44 (5) ◽  
pp. 405-410 ◽  
Author(s):  
Anjan Chatterjee ◽  
Bianca Bromberger ◽  
William B. Smith ◽  
Rebecca Sternschein ◽  
Page Widick
Keyword(s):  
Brain Damage ◽  
Right Hemisphere ◽  
Neural Basis ◽  
Left Brain ◽  
Right Hemisphere Damage ◽  
Right Brain ◽  
Art Production ◽  
The Right ◽  
Left Brain Damage ◽  
Insight Into

We know little about the neurologic bases of art production. The idea that the right brain hemisphere is the “artistic brain” is widely held, despite the lack of evidence for this claim. Artists with brain damage can offer insight into these laterality questions. The authors used an instrument called the Assessment of Art Attributes to examine the work of two individuals with left-brain damage and one with right-hemisphere damage. In each case, their art became more abstract and distorted and less realistic. They also painted with looser strokes, less depth and more vibrant colors. No unique pattern was observed following right-brain damage. However, art produced after left-brain damage also became more symbolic. These results show that the neural basis of art production is distributed across both hemispheres in the human brain.

Evidence of altered dominance in children with congenital spastic hemiplegia

1995 ◽  
Vol 1 (3) ◽  
pp. 261-270 ◽  
Author(s):  
Marit Korkman ◽  
Lennart von Wendt
Keyword(s):  
Brain Damage ◽  
Left Hemisphere ◽  
Neuropsychological Tests ◽  
Right Hemisphere ◽  
Individual Variability ◽  
Right Hemisphere Damage ◽  
Spastic Hemiplegia ◽  
Ear Advantage ◽  
The Right ◽  
High Degree

AbstractThe study aimed at investigating lateralization effects and signs of transfer and crowding in children with congenital lateralized brain damage with the aid of a dichotic listening test, a chimeric test, and verbal and nonverbal neuropsychological tests. Thirty-three children with spastic hemiplegia and 86 control children (age 5.0–12.0 yr) were assessed. Children with left-hemisphere damage (n = 17) were found to have a pathological left-ear advantage for verbal material, and children with right-hemisphere damage (n = 16) were found to have a pathological right visual half-field advantage for visual material. Children with left-hemisphere damage and a left-ear advantage on the dichotic test were also found to have a right visual half-field advantage on the chimeric test, which was regarded as a sign of reversed dominance. No verbal or nonverbal differences emerged between the left-hemisphere and the right-hemisphere damage groups, nor did differences emerge when the children were reclassified by considering children with left-hemisphere damage and signs of reversed dominance as having damage to the nondominant hemisphere. It was concluded that although lateralized brain damage may alter the dominance for verbal and visual functions, there is still considerable inter-individual variability with respect to inter- and intrahemispheric neural adjustment to damage. The dichotic and the chimeric tests did not indicate the presence of brain damage accurately, but they indicated the lateralization of damage in children with stated abnormality with a high degree (91.3%) of accuracy. (JINS, 1995, I, 261–270.)

Phrase comprehension after brain damage

1982 ◽  
Vol 3 (3) ◽  
pp. 263-278 ◽  
Author(s):  
Rita Sloan Berndt ◽  
Alfonso Caramazza
Keyword(s):  
Brain Damage ◽  
Left Hemisphere ◽  
Language Comprehension ◽  
Right Hemisphere ◽  
The Other ◽  
Right Hemisphere Damage ◽  
Dimensional Adjectives ◽  
Neurologically Normal ◽  
The Right

ABSTRACTComprehension of six dimensional adjectives was found to be intact in groups of left hemisphere-damaged, right hemisphere-damaged and neurologically normal patients. Phrases with those adjectives were interpreted quite differently by left hemisphere-damaged patients than by the other two groups, and a subgroup of left-damaged patients appeared to be responsible for that group's deviant responses to phrases such as slightly bigger. All patients in the left-damaged group had some difficulty with negative phrases such as not big, however. Patients with right hemisphere-damage had difficulty interpreting only negative phrases with small. Results are interpreted with reference to Luria's discussion of semantic aphasia, and with regard to recent findings concerning the role of the right hemisphere in language comprehension.

scholarly journals Unexpected Reading Dissociation in a Brazilian “nisei” with Crossed Aphasia

1994 ◽  
Vol 7 (3-4) ◽  
pp. 165-170 ◽  
Author(s):  
P. Caramelli ◽  
M. A. M. P. Parente ◽  
M. L. Hosogi ◽  
M. Bois ◽  
A. R. Lecours
Keyword(s):  
Reading Comprehension ◽  
Ischemic Stroke ◽  
Right Hemisphere ◽  
Written Language ◽  
Cerebral Hemispheres ◽  
Japanese Language ◽  
Writing System ◽  
Crossed Aphasia ◽  
The Right ◽  
Reading Impairments

There is an increased interest in reading impairments in the Japanese language, due to its particular writing system which includes two different scripts, Kanji (logograms) and Kana (phonograms). Reading dissociations between Kanji and Kana have been described, showing that each system is processed differently by the cerebral hemispheres. We describe the case of a 68 year old Brazilian “nisei” (i.e. born from Japanese parents) who had knowledge of both Japanese and Portuguese. He presented an ischemic stroke affecting the right hemisphere and subsequently developed a Broca's aphasia and an unexpected reading dissociation, with an impairment in Kana reading comprehension and a good performance in Kanji and in Portuguese. These findings suggest that the patient's right and left hemispheres have assumed opposite roles not only for oral but also for written language decodification.

Motor Free Visual Perceptual Test: Impact of Vertical Answer Cards Position on Performance of Adults with Hemispatial Visual Neglect

1995 ◽  
Vol 15 (4) ◽  
pp. 223-236 ◽  
Author(s):  
Louisette Merrier ◽  
Réjean Hébert ◽  
Louise Gauthier
Keyword(s):  
Brain Damage ◽  
Healthy Subjects ◽  
Vertical Position ◽  
Test Results ◽  
Visual Neglect ◽  
Assessment Tests ◽  
Right Brain ◽  
Perceptual Test ◽  
Perceptual Assessment ◽  
Test Retest Reliability

Patients who have hemispatial visual neglect (HVN) have difficulty directing their attention toward the visual field contralateral to the side of the lesion. This affects their performance on perceptual assessment tests and masks related visual perceptual deficits. The aim of this study was to verify whether a vertical position of the answer cards of the Motor Free Visual Perceptual Test (MVPT) could overcome this problem. Three groups of subjects were involved in the study: 15 healthy subjects, 15 subjects who had right brain damage without HVN, and 9 subjects who had right brain damage with HVN. The presence of HVN was established by positive test results for at least one of the two tests used, the Albert Test and the Bells Test. The subjects performed the MVPT twice—once in its standard version, and once in a modified version in which the answer cards were presented in a vertical position. The equivalence between the two forms was confirmed with healthy subjects and subjects with right brain damage without HVN. Tor the subjects who had HVN, the vertical positioning of the answer cards caused significantly less interference (p < .05). The test-retest reliability coefficient for the two versions of the MVPT was 0.92–0.94.

Communication Abilities Following Right Hemisphere Damage: Prevalence, Evaluation, and Profiles

2016 ◽  
Vol 1 (2) ◽  
pp. 106-115 ◽  
Author(s):  
Perrine Ferré ◽  
Yves Joanette
Keyword(s):  
Right Hemisphere ◽  
Communication Disorders ◽  
Communication Assessment ◽  
Right Hemisphere Damage ◽  
Right Brain ◽  
Clinical Background ◽  
Neurological Conditions ◽  
Neuro Imaging ◽  
The Right ◽  
Clinical Awareness

It is now consensually accepted that the contribution of both hemispheres is required to reach a functional level of communication. The unilateralized view of language function, introduced more than a century ago, has since been complemented by clinical experience as well as neuro-imaging observations. Studies based on healthy and right-brain-damaged individuals assert the necessity to better describe, assess, and care for this broad population. Indeed, various neurological conditions, including stroke, traumatic brain injury (TBI), or neurodegenerative disease, can affect the right hemisphere (RH) and lead to distinct communication disorders. In the past 30 years, knowledge about communication assessment and, more recently, therapy designed for right-brain-damaged adults has drastically evolved. This manuscript aims at presenting the theoretical and clinical background that established the current expertise to support accurate assessment of communication following right brain damage. It is believed that a better understanding of the various profiles of impairments following a RH infract will allow speech-language pathologists (SLPs) to develop the clinical awareness necessary for appropriately taking care of these individuals.

scholarly journals The Neural Basis for Spatial Relations

2010 ◽  
Vol 22 (8) ◽  
pp. 1739-1753 ◽  
Author(s):  
Prin X. Amorapanth ◽  
Page Widick ◽  
Anjan Chatterjee
Keyword(s):  
Brain Damage ◽  
Spatial Information ◽  
Right Hemisphere ◽  
Inferior Frontal Gyrus ◽  
Spatial Relations ◽  
Functional Neuroanatomy ◽  
Neural Basis ◽  
Behavioral Impairment ◽  
Right Brain ◽  
Categorical Spatial Relations

Studies in semantics traditionally focus on knowledge of objects. By contrast, less is known about how objects relate to each other. In an fMRI study, we tested the hypothesis that the neural processing of categorical spatial relations between objects is distinct from the processing of the identity of objects. Attending to the categorical spatial relations compared with attending to the identity of objects resulted in greater activity in superior and inferior parietal cortices (especially on the left) and posterior middle frontal cortices bilaterally. In an accompanying lesion study, we tested the hypothesis that comparable areas would be necessary to represent categorical spatial relations and that the hemispheres differ in their biases to process categorical or coordinate spatial relations. Voxel-based lesion symptom mapping results were consistent with the fMRI observations. Damage to a network comprising left inferior frontal, supramarginal, and angular gyri resulted in behavioral impairment on categorical spatial judgments. Homologous right brain damage also produced such deficits, albeit less severely. The reverse pattern was observed for coordinate spatial processing. Right brain damage to the middle temporal gyrus produced more severe deficits than left hemisphere damage. Additional analyses suggested that some areas process both kinds of spatial relations conjointly and others distinctly. The left angular and inferior frontal gyrus processes coordinate spatial information over and above the categorical processing. The anterior superior temporal gyrus appears to process categorical spatial information uniquely. No areas within the right hemisphere processed categorical spatial information uniquely. Taken together, these findings suggest that the functional neuroanatomy of categorical and coordinate processing is more nuanced than implied by a simple hemispheric dichotomy.

Correlations of Wechsler-Bellevue Rank Orders of Subtest Means in Lateralized and Non-Lateralized Brain-Damaged Groups

1964 ◽  
Vol 19 (2) ◽  
pp. 391-399 ◽  
Author(s):  
Charles G. Matthews ◽  
Ralph M. Reitan
Keyword(s):  
Brain Damage ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Rank Order ◽  
Brain Dysfunction ◽  
Visual Field Defects ◽  
Rank Orders ◽  
Wide Range ◽  
Spatial Configurations ◽  
The Right

Rank difference coefficients of correlation were computed between Wechsler-Bellevue (Form I) rank orders of subtest means in 20 groups of adult Ss with verified brain damage. Six groups with right hemisphere damage, 6 groups with left hemisphere damage, and 8 groups with non-lateralized brain damage were included, with the groups composed according to a variety of lateralizing criteria including independent conclusions drawn from neurological, neurosurgical and neuropathological findings, EEG lateralization, visual field defects, suppression phenomena, dysphasia and difficulty in copying spatial configurations. Consistencies in rank orders of subtest means far beyond chance expectancies were demonstrated within the lateralized brain-damaged categories, while highly significant differences in subtest rank orders were shown between the right and left hemisphere groups. The results suggested that lateralization of brain lesions has a striking effect upon the rank order of Wechsler-Bellevue subtests and that consistent relationships obtain across a wide range of structural, electrophysiological and behavioral criteria of lateralized brain dysfunction.

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