Abstract
Great emphasis has been placed on the right hemisphere, due to its possible selective contribution, in the processing of metaphorical statements.ObjectivesTo describe the processing of metaphors in the case of a patient with transcortical motor aphasia, using specific tests for patients with encephalic injuries of the right hemisphere, and to contribute to the discussion on the inter-hemispheric relationships associated with this function.MethodsA 54 year-old man with transcortical motor aphasia was evaluated three years after a left hemisphere stroke. The tasks of comprehension of metaphors were based on the subtest Metaphor Comprehension Task of the Montreal Evaluation of Communications Scale (MEC). Two metaphor comprehension tests were applied, in 45-minute sessions with a 48 hour interval between each. Test 1 involved comprehension of the metaphors according to the options offered, and Test 2 the comprehension of metaphors measured by response time and visual field.ResultsAlthough the right hemisphere was not affected by the stroke in this case, difficulties were observed in the processing of metaphors.ConclusionsThis study suggests that the left hemisphere participates in the processing of figurative meanings. The adaptability of the brain can also re-accommodate the uninjured areas of the brain, causing the dynamic of the brain to be modified. As a result, deducing cerebral functions based on clinical data can be problematic. The value of this study is that it can contribute to clinical aspects of language rehabilitation.
Highlights
Great emphasis has been placed on the right hemisphere, due to its possible selective contribution, in the processing of metaphorical statements
Test 1 previously demanded that the patient marked the answer to explain the metaphor presented to him on the card
Over the seventy years since Broca’s discoveries regarding the left hemisphere, the role of the right hemisphere has remained unknown. It seemed that the right hemisphere was capable of tolerating greater injuries without presenting evident damage
Summary
Abstract – Great emphasis has been placed on the right hemisphere, due to its possible selective contribution, in the processing of metaphorical statements. Objectives: To describe the processing of metaphors in the case of a patient with transcortical motor aphasia, using specific tests for patients with encephalic injuries of the right hemisphere, and to contribute to the discussion on the inter-hemispheric relationships associated with this function. Objetivos: Descrever o processamento de metáforas em um caso de um paciente com afasia transcortical motora por meio da aplicação de testes específicos para lesados encefálicos no hemisfério direito, a fim de contribuir para discussão das relações inter-hemisféricas associadas com esta função. The principle that underlies the development of the concept of aphasia was based on the motor and sensory system functions involved in the language acts of perception, interpretation and execution of signs to be controlled by at least two independently organized cerebral systems.[2]. Etiology comprises injuries caused by cranium-encephalic traumas, tumors; infection processes of the CNS and most frequently, cerebral vascular accidents.[4]
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