Right Brain Damage
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. Focal hemisphere and visuoperceptual categorization.
Visuoperceptual categorization was investigated in patients with unilateral brain damage by a task in which meaningless shapes had to be classified with reference to a number of prototype patterns. Right brain-damaged subjects with visual field defect turned out to have a narrower categorization span. As this outcome seems to be scarcely consonant with a low
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14. Judgment of spatial orientation in patients with focal brain damage1
Thirty control and 121 brain-damaged patients with injury restricted to one hemisphere were presented with a test requiring the placing of a rod, fixed on a support by a hinged joint, in the same position as a model. Two versions of the test were given, one to be performed with the aid of vision and the other only by touch. The brain-damaged patients were su
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15. Brain damage and neurological outcome after open-heart surgery.
Cerebral damage remains a major hazard of open-heart surgery. A one-year follow-up investigation of 100 consecutive patients who underwent open-heart operation for valve replacement revealed an incidence of postoperative cerebral disorders of 37%. The occurrence of brain damage was clearly related to the presence of a history of previous neurological disease
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16. Emotional and non-emotional facial behaviour in patients with unilateral brain damage.
Aspects of emotional facial expression (responsivity, appropriateness, intensity) were examined in brain-damaged adults with right or left hemisphere cerebrovascular lesions and in normal controls. Subjects were videotaped during experimental procedures designed to elicit emotional facial expression and non-emotional facial movement (paralysis, mobility, pra
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17. Early orientation of attention toward the half space ipsilateral to the lesion in patients with unilateral brain damage.
Posner has suggested that unilateral spatial neglect could be due to a difficulty in disengaging attention from its current focus to orient it toward the neglected half space. Clinical and experimental data suggest, however, that this disengaging difficulty could be only one aspect of a more complex disturbance also characterized by an early automatic orient
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18. Verbal and Nonverbal Emotional Memory Following Unilateral Amygdala Damage
The amygdala is involved in the normal facilitation of memory by emotion, but the separate contributions of the left and right amygdala to memory for verbal or nonverbal emotional material have not been investigated. Fourteen patients with damage to the medial temporal lobe including the amygdala (seven left, seven right), 18 brain-damaged, and 36 normal con
Cold Spring Harbor Laboratory Press.
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19. Right temporofrontal cortex as critical locus for the ecphory of old episodic memories.
A 54 year old patient of average intelligence with a severe and enduring loss of old autobiographical memories after herpes simplex type 1 infection is described. She was tested with a comprehensive neuropsychological battery two years after the infection. Special emphasis was laid on examining different aspects of retrograde memory. The neurological examina
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20. Hemi-dystonia secondary to localised basal ganglia tumour.
An 8-year-old boy with an 18 month history of left limb hemi-dystonia due to a right lenticular nucleus astrocytoma originating in the putamen is reported. Subsequent neuropathological study demonstrated that the tumour was mainly localised to the right lenticular nucleus, with cystic necrosis in the infero-lateral putamen. Solid tumour also infiltrated the
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21. Impaired Emotional Declarative Memory Following Unilateral Amygdala Damage
Case studies of patients with bilateral amygdala damage and functional imaging studies of normal individuals have demonstrated that the amygdala plays a critical role in encoding emotionally arousing stimuli into long-term declarative memory. However, several issues remain poorly understood: the separate roles of left and right amygdala, the time course over
Cold Spring Harbor Laboratory Press.
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22. Directional hypokinesia in spatial hemineglect: a case study.
A patient with an ischaemic lesion involving the right frontal lobe and basal ganglia showed left spatial hemineglect in visuomotor exploratory tasks, requiring the use of the right unaffected hand. Her performance was, however, entirely preserved, with no evidence of neglect, when she was required to identify targets among distractors in both the left and r
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23. Cerebral correlates of disturbed executive function and memory in survivors of severe closed head injury: a SPECT study.
Thirty six patients in the chronic stage after severe closed head injury were examined with tests of executive function, memory, intelligence, and functional capacities in daily living. Correlations were sought between test results and Tc-99m-HMPAO uptake of frontal, temporal, and thalamic regions assessed by SPECT. Neither the number of significant correlat
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24. Point localisation in patients with unilateral brain damage.
The ability to reproduce the position of points in a plane was examined by a copying test in a control group and in unilaterally brain damaged patients. The procedure was designed to minimise the influence of visual field defects and of spatial hemi-inattention on performance. Accuracy of of localisation and direction of errors were studied in each half of t