The abstraction of numerical relations: A role for the right hemisphere in arithmetic?

1997 ◽  
Vol 3 (3) ◽  
pp. 260-268 ◽  
Author(s):  
DAWN W. LANGDON ◽  
ELIZABETH K. WARRINGTON
Keyword(s):  
Right Hemisphere ◽  
Lesion Group ◽  
Reasoning Ability ◽  
Neuropsychological Battery ◽  
Numerical Series ◽  
Cerebral Lesions ◽  
Reasoning Test ◽  
Hemisphere Lesion ◽  
Series Completion ◽  
The Right

Arithmetical reasoning ability has been investigated in a group study of patients with unilateral cerebral lesions. Two series of 38 and 39 patients, who had suffered unilateral cerebral lesions of the right and left cerebral hemisphere, respectively, were investigated. They completed a neuropsychological battery that included a test of computation (Graded Difficulty Arithmetic, GDA; Jackson & Warrington, 1986), and a new test of numerical series completion (Arithmetical Reasoning Test, ART). Whereas the left-hemisphere lesion group were markedly more impaired on the GDA compared to both the right-hemisphere lesion group and a standardization sample, both lesion groups were equally severely impaired on the ART. It is suggested that the abstraction of numerical relations, which is essential to numerical series completion, relies on the integrity of the right hemisphere. A global model of arithmetic processing that incorporates these findings is proposed. (JINS, 1997, 3, 260–268.)

scholarly journals About the neurolinguistics of the implicatures: abstract of a study

1989 ◽  
Vol 47 (2) ◽  
pp. 254-255
Author(s):  
Juliano Luís Fontanari
Keyword(s):  
Right Hemisphere ◽  
Clinical Manifestations ◽  
Brain Lesions ◽  
Cerebral Lesions ◽  
The Right

Taking into account recent data on linguistics of production and comprehension in aphasia, a protocol was executed including the several types of implicatures. The protocol was applied to 90 subjects classified according to the localization of cerebral lesions, as shown by CT. Results are discussed in report to clinical manifestations of brain lesions, as aphasia, apraxia, agnosia, and intelligence and pragmatics disturbances. Discussion supports the impression that there is a mechanism that correlates extra-linguistics contexts with the 'said' at the right hemisphere.

WAIS Results for Ss with Longstanding, Chronic, Lateralized and Diffuse Cerebral Dysfunction

1964 ◽  
Vol 19 (3) ◽  
pp. 735-739 ◽  
Author(s):  
Kathleen B. Fitzhugh ◽  
Loren C. Fitzhugh
Keyword(s):  
Right Hemisphere ◽  
Age Of Onset ◽  
Lesion Group ◽  
Clinical Samples ◽  
Performance Tasks ◽  
Cerebral Dysfunction ◽  
The Mean ◽  
The Right ◽  
Total Performance Scores ◽  
Diffuse Lesion

Several studies utilizing W-B I results have shown differential impairment on verbal or performance tasks associated with lateralized cerebral dysfunction. Only modest differential impairment, however, has been found among patients with longstanding, chronic brain damage. Increased use of the newer scale, the WAIS, warrants evaluation of possible differential impairment of selected clinical samples on this scale. WAIS results were compared for 28 Ss with longstanding maximal cerebral damage of the left hemisphere, 24 with maximal damage of the right hemisphere, and 46 with diffuse damage. Significant differences between group means were rare. However, the mean intra-individual difference between total Verbal and total Performance scores was highly significant for the right-lesion group, moderately significant for the diffuse-lesion group, and non-significant for the left-lesion group. Further investigation with the instrument is needed on groups which differ from those in the present study with respect to variables such as duration of cerebral dysfunction, type of lesion, and age of onset, in order to improve our understanding of relationships between cerebral dysfunction and ability deficits.

Visual Span of Apprehension in Patients with Unilateral Cerebral Lesions

1971 ◽  
Vol 23 (4) ◽  
pp. 423-431 ◽  
Author(s):  
Elizabeth K. Warrington ◽  
P. Rabin
Keyword(s):  
Right Hemisphere ◽  
Short Term Memory ◽  
Control Group ◽  
Short Term ◽  
Cerebral Lesions ◽  
Visual Short Term Memory ◽  
Visual Span ◽  
Random Letter ◽  
Left Posterior ◽  
The Right

The visual span of apprehension for random letter and digit sequences, approximations to English sequences and non-symbolic line stimuli was measured in patients with unilateral cerebral lesions. The left hemisphere group was significantly impaired relative to the right hemisphere group and a control group on all three types of visual span task. The deficit was most marked in patients with left posterior lesions. The visual span deficits were not related to other language deficits. The findings are discussed in terms of a modality-specific defect of visual short-term memory.

Evidence for Development of Distinction of Voice Onset Time in a Child with Left-Hemisphere Lesion

1995 ◽  
Vol 81 (3) ◽  
pp. 1001-1002
Author(s):  
Kelly Paulson-Sebold ◽  
Ludie R. Hansen ◽  
J. Anthony Seikel ◽  
Patricia M. Hargrove ◽  
Gail D. Chermak
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Voice Onset Time ◽  
Onset Time ◽  
Language Function ◽  
Partial Removal ◽  
Hemisphere Lesion ◽  
The Right

Following surgery for partial removal of the posterior left hemisphere at 5 mo., voice onset time was assessed to 9; 11 yr. Left-hemisphere language function associated with voicing appeared subsumed by the right hemisphere.

scholarly journals Correction of cerebral thermal balance disruption in therapy and rehabilitation of patients with cerebral pathology

2019 ◽  
Vol 1 (4) ◽  
pp. 56-63
Author(s):  
O A Shevelev ◽  
M V Petrova ◽  
Sh Kh Saidov ◽  
M A Chubarova ◽  
E Sh Usmanov ◽  
...  
Keyword(s):  
Brain Injuries ◽  
Right Hemisphere ◽  
Thermal Balance ◽  
Critical Conditions ◽  
Healthy Individuals ◽  
Cerebral Lesions ◽  
Average Temperature ◽  
Cerebral Pathology ◽  
The Right ◽  
The Brain

Temperature monitoring of the brain using radiothermometric technology allows you to assess the imbalance of the thermal balance of the brain, and the technique has shown the possibility and information content of its use in the diagnosis of cerebral lesions. In healthy individuals, at rest, the average temperature of the left (36.74 ± 0.37 ° C) and the right hemisphere (36.64 ± 0.32 ° C). In boxing athletes who received "planned" minor traumatic brain injuries after training sparring, the average temperature of the left (38.4 ± 0.28 ° C) and right temperature (38.2 ± 0.45 ° C), which is significantly elevated. Patients in chronic critical conditions showed a monotonous temperature distribution in the left (36.98 ± 0.18 ° C) and right hemispheres (36.88 ± 0.21 ° C). The temperature heterogeneity of the brain in this category of patients was less pronounced compared with healthy individuals, athletes after sports head injury.

scholarly journals HUBUNGAN LETAK LESI HEMISFER SEREBRAL DAN DERAJAT KLINIS KECEMASAN PADA PENDERITA STROKE ISKEMIK

2018 ◽  
Vol 36 (1) ◽  
Author(s):  
Yelly Marliana Patu ◽  
Audry Devisanty Wuysang ◽  
Nadra Maricar
Keyword(s):  
Ischemic Stroke ◽  
Rating Scale ◽  
Right Hemisphere ◽  
P Value ◽  
Chi Square ◽  
Hemisphere Lesion ◽  
Hamilton Anxiety Rating Scale ◽  
The Right ◽  
The Relationship ◽  
Hamilton Anxiety

   RELATIONSHIP BETWEEN LOCATION OF CEREBRAL HEMISPHERE LESION AND CLINICAL DEGREES OF ANXIETY IN ISCHEMIC STROKE PATIENTSABSTRACTIntroduction: Stroke is the leading cause of disability and the third cause of death in the world. The lesion in the right hemisphere is most often associated with anxiety.Aim: Knowing the relationship between the location of the lesion and the degree of anxiety in patients with acute ischemic post-stroke.Method: Cross-sectional study of 40 ischemic post-stroke patients at Wahidin Sudirohusodo Hospital and network- ing hospitals in January-April 2018.  The degree of anxiety was measured by the Hamilton Anxiety Rating Scale (HARS). Chi-square and Mann-Whitney tests were used to analyze the relationship between variables with a p value <0.05 consid- ered significant.Result: There was a significant relationship between the location of the lesion in the hemisphere and the HARS score (p=0.01); and between the location of infarction lesions (cortical and subcortical) with the degree of anxiety in patients with ischemic stroke (p=0.012).Discussion: Moderate-severe anxiety levels occur higher in the lesions in the right hemisphere. The clinical instru- ments used cannot eliminate the element of subjectivity.Keywords: Anxiety in stroke, ischemic stroke, left hemisphere, lesion location, right hemisphereABSTRAKPendahuluan: Stroke merupakan penyebab utama kecacatan dan kematian ketiga terbanyak di dunia. Lokasi lesi di hemisfer kanan merupakan lokasi lesi yang paling sering dikaitkan dengan timbulnya kecemasan.Tujuan: Mengetahui hubungan antara lokasi lesi dan derajat kecemasan pada penderita pascastroke iskemik akut.Metode: Desain potong lintang pada 40 sampel penderita pascastroke iskemik di RS Wahidin Sudirohusodo dan rumah sakit jejaring pada bulan Januari-April 2018. Derajat kecemasan diukur dengan Hamilton Anxiety Rating Scale (HARS). Uji Chi-square dan Mann-Whitney digunakan untuk menganalisis hubungan antar variabel dengan nilai p<0,05 dianggap bermakna.Hasil: Terdapat hubungan yang signifikan antara lokasi lesi di hemisfer dengan skor HARS (p=0,01); dan antara lokasi lesi infark (kortikal dan subkortikal) dengan derajat kecemasan pada penderita stroke iskemik (p=0,012).Diskusi: Derajat kecemasan sedang-berat lebih tinggi terjadi pada lesi di hemisfer kanan.  Instrumen klinis yang digunakan tidak dapat menghilangkan unsur subjektifitas.Kata kunci: Cemas pada stroke, hemisfer kanan, hemisfer kiri, letak lesi, stroke iskemik

scholarly journals Auditory comprehension in agrammatism due to the right hemisphere lesion.

1995 ◽  
Vol 15 (3) ◽  
pp. 278-282
Author(s):  
Machiko Kezuka ◽  
Mitsuru Kawamura ◽  
Syuji Kishida
Keyword(s):  
Right Hemisphere ◽  
Auditory Comprehension ◽  
Hemisphere Lesion ◽  
The Right

scholarly journals Psychic Tonus, Body Schema and the Parietal Lobes: A Multiple Lesion Case Analysis

2007 ◽  
Vol 18 (2) ◽  
pp. 65-80 ◽  
Author(s):  
C. M. J. Braun ◽  
S. Desjardins ◽  
S. Gaudelet ◽  
A. Guimond
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Hemispheric Specialization ◽  
Body Schema ◽  
The Body ◽  
Parietal Lobes ◽  
Hemisphere Lesion ◽  
The Right ◽  
Internal Experience ◽  
And Behavior

The psychic tonus model (Braun and colleagues, 1999, 2002, 2003, 2006) states that the left hemisphere is a “booster” of internal experience and behavior in general, and that the right hemisphere is a “dampener”. Twenty-five patients with a “positive” extreme disturbance of body schema (somatoparaphrenia) and 37 patients with a “negative” disturbance of body schema (autotopagnosia or Gerstmann’s syndrome), all following a unilateral parietal lesion, were found in the literature and were analyzed to test predictions from Braun’s “psychic tonus” model. As expected, patients with a positive syndrome had a right hemisphere lesion significantly more frequently, and those with a negative syndrome had a left hemisphere lesion significantly more frequently. Thus the psychic tonus model of hemispheric specialization, previously supported with regard to psychomotor baseline, libido, talkativeness, memory, auditory and visual perceptual tonus, now incorporates the tonus of representation of the body (body schema) in the parietal lobes.

Effects of Left and Right Cerebral Lesions on the Naming Process

1972 ◽  
Vol 35 (3) ◽  
pp. 787-798 ◽  
Author(s):  
Alexis M. Nehemkis ◽  
Peter M. Lewinsohn
Keyword(s):  
Adverse Effect ◽  
Left Hemisphere ◽  
Right Hemisphere ◽  
Cerebral Hemispheres ◽  
Semantic Interference ◽  
Cerebral Lesions ◽  
Right Hemisphere Damage ◽  
Functional Differences ◽  
Left And Right ◽  
The Right

This experiment tested two major hypotheses: (1) Left hemisphere damage will have a more adverse effect on the naming process than on the ability to read and (2) increments in semantic interference will disrupt the performance of patients with left-hemisphere damage more than that of patients with right-hemisphere damage. Patients with left cerebral lesions consistently performed more poorly than the right-hemisphere-damage patients across all stimulus and response conditions. Aphasic lefts had more difficulty with naming than with reading. Hypothesis 2 was not supported. The findings are discussed with reference to the adequacy of the “verbal-nonverbal” dichotomy for describing functional differences between the left and right cerebral hemispheres.

scholarly journals Crossed Aphasia. II: Why Are Deep Lesions Overrepresented with Respect to Standard Aphasia?

1996 ◽  
Vol 9 (3-4) ◽  
pp. 163-170 ◽  
Author(s):  
M. Laiacona ◽  
E. Capitani ◽  
C. Stangalino ◽  
L. Lorenzi
Keyword(s):  
Left Hemisphere ◽  
Right Hemisphere ◽  
Unilateral Neglect ◽  
Large Sample ◽  
Hemisphere Lesion ◽  
Crossed Aphasia ◽  
The Right ◽  
Attentional Mechanisms

In this paper we have reviewed the cases of vascular crossed aphasia reported in the literature, in order to check whether deep lesions are really overrepresented in crossed aphasia with respect to standard aphasia. The comparison with a large sample of standard left-hemisphere-damaged aphasics revealed a significantly higher incidence of purely deep lesions in crossed aphasics than in standard aphasics. The overrepresentation of deep lesions in crossed aphasia appears to be contingent on the co-occurrence of aphasia and Unilateral Neglect after right-hemisphere lesion. This suggests an interaction between language and attentional mechanisms in the case of reversed language lateralisation: the overcrowding of these functions in the right hemisphere could make language more vulnerable after right deep lesions.

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