Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion
We report a patient with phonological agraphia (selective impairment of kana [Japanese phonetic writing] nonwords) and acalculia (mental arithmetic difficulties) with impaired verbal short-term memory after a cerebral hemorrhage in the opercular part of the left precentral gyrus (Brodmann area 6) an...
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doaj-2fedbdce26684338a698972a255717042020-11-24T22:22:40ZengKarger PublishersCase Reports in Neurology1662-680X2018-03-01101728210.1159/000487849487849Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus LesionYasuhisa SakuraiEmi FurukawaMasanori KuriharaIzumi SugimotoWe report a patient with phonological agraphia (selective impairment of kana [Japanese phonetic writing] nonwords) and acalculia (mental arithmetic difficulties) with impaired verbal short-term memory after a cerebral hemorrhage in the opercular part of the left precentral gyrus (Brodmann area 6) and the adjacent postcentral gyrus. The patient showed phonemic paragraphia in five-character kana nonword writing, minimal acalculia, and reduced digit and letter span. Mental arithmetic normalized after 8 months and agraphia recovered to the normal range at 1 year after onset, in parallel with an improvement of the auditory letter span score from 4 to 6 over a period of 14 months and in the digit span score from 6 to 7 over 24 months. These results suggest a close relationship between the recovery of agraphia and acalculia and the improvement of verbal short-term memory. The present case also suggests that the opercular part of the precentral gyrus constitutes the phonological route in writing that conveys phonological information of syllable sequences, and its damage causes phonological agraphia and acalculia with reduced verbal short-term memory.https://www.karger.com/Article/FullText/487849AcalculiaFrontal pure agraphiaPhonological agraphiaVerbal short-term memoryWorking memory |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yasuhisa Sakurai Emi Furukawa Masanori Kurihara Izumi Sugimoto |
spellingShingle |
Yasuhisa Sakurai Emi Furukawa Masanori Kurihara Izumi Sugimoto Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion Case Reports in Neurology Acalculia Frontal pure agraphia Phonological agraphia Verbal short-term memory Working memory |
author_facet |
Yasuhisa Sakurai Emi Furukawa Masanori Kurihara Izumi Sugimoto |
author_sort |
Yasuhisa Sakurai |
title |
Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion |
title_short |
Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion |
title_full |
Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion |
title_fullStr |
Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion |
title_full_unstemmed |
Frontal Phonological Agraphia and Acalculia with Impaired Verbal Short-Term Memory due to Left Inferior Precentral Gyrus Lesion |
title_sort |
frontal phonological agraphia and acalculia with impaired verbal short-term memory due to left inferior precentral gyrus lesion |
publisher |
Karger Publishers |
series |
Case Reports in Neurology |
issn |
1662-680X |
publishDate |
2018-03-01 |
description |
We report a patient with phonological agraphia (selective impairment of kana [Japanese phonetic writing] nonwords) and acalculia (mental arithmetic difficulties) with impaired verbal short-term memory after a cerebral hemorrhage in the opercular part of the left precentral gyrus (Brodmann area 6) and the adjacent postcentral gyrus. The patient showed phonemic paragraphia in five-character kana nonword writing, minimal acalculia, and reduced digit and letter span. Mental arithmetic normalized after 8 months and agraphia recovered to the normal range at 1 year after onset, in parallel with an improvement of the auditory letter span score from 4 to 6 over a period of 14 months and in the digit span score from 6 to 7 over 24 months. These results suggest a close relationship between the recovery of agraphia and acalculia and the improvement of verbal short-term memory. The present case also suggests that the opercular part of the precentral gyrus constitutes the phonological route in writing that conveys phonological information of syllable sequences, and its damage causes phonological agraphia and acalculia with reduced verbal short-term memory. |
topic |
Acalculia Frontal pure agraphia Phonological agraphia Verbal short-term memory Working memory |
url |
https://www.karger.com/Article/FullText/487849 |
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