Neural substrate in a case of foreign accent syndrome following basal ganglia hemorrhage

Pyun, Sung Bom; Jang, Seung Gul; Lim, Sunghee; Ha, Ji Wan; Cho, Hyesook

doi:10.1016/j.jneuroling.2013.03.001

Cited by 7 publications

(6 citation statements)

References 25 publications

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“…Two cases developed aphasia in the lesion phase [54] (3.33%; 2/60). The case described by Pyun et al (2013) was reported to suffer from aphasia. However, it was impossible to derive onset from the information provided in the case report: aphasia was formally confirmed one month post-stroke, but could equally well have developed in an acute stage.…”

Section: Comorbid Speech and Language Disordersmentioning

confidence: 99%

“…Apraxia of speech (AoS) was reported in the acute phase in five stroke patients (8.33%; 5/60) [57]. The cases described by Pyun et al (2013) and Kuschmann et al (2012, case 1= Kuschmann & Lowit 2015, case 1) were both reported to suffer from AoS, but were only formally tested one month and twentysix months post-stroke respectively. Hence, no exact time of onset could be determined on the basis of the information in the case report.…”

Section: Comorbid Speech and Language Disordersmentioning

confidence: 99%

“…The majority of the patients with cognitive deficits had lesions in the frontoparietal areas [96], for the cases described by Kuschmann et al (2012, case 1 & 2) the lesions were not clearly specified and for the case described by Mariën et al (2013) and Pyun et al (2013), they were situated in the cerebellum and the basal ganglia respectively. Seven patients had problems with arithmetics [97].…”

Section: Cognitive Deficits In Vascular Fasmentioning

confidence: 99%

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Neurological Aspects of Foreign Accent Syndrome in Stroke Patients

Mariën

Keulen

Verhoeven

2019

Journal of Communication Disorders

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Publications on FAS were identified by means of searches in electronic databases (Medline, PsycINFO, Current Contents, Web of Science). In addition, the bibliographies of all obtained articles were scrutinized to identify additional references. Only first source information was analyzed; second-or third-line references to original contributions were not considered. This resulted in a survey of 172 FAS cases in total.The quality of the collected data was variable as to the degree of reported details. Inclusion and exclusion criteria were applied to narrow down the corpus for further analysis. Inclusion criteria were defined as (i) the description of a patient in whom a change of accent was observed, and (ii) for whom there was a clear description of the associated etiology in order to avoid misinterpretation of the data. In order to improve the readability of this paper, we have avoided listing cases in the text to which particular statements apply. Rather, we have used single numbers between square brackets to represent series of FAS cases: the association of these numbers and the FAS cases they refer to can be found in table 8.1 in section 8 of this article (list A). The alphabetically ordered list B of table 8.1 enables the reader to identify the paper in which each FAS case is described. A full summary description of individual FAS patients can be consulted in the supplementary materials.Regarding the exclusion criteria, it was decided to exclude cases reported in poster or oral presentations, conference proceedings [1] 1 and unpublished theses [2] 2 . Furthermore, cases were excluded if (i) there was an explicit statement that the etiology was unclear or could not unambiguously be identified as organic or as functional in the above-mentioned meaning by the authors [3], (ii) the etiology was not mentioned [4], (iii) there was doubt about the origin ('suggestive') [5]. Due to linguistic limitations, only articles published in English, Spanish, Norwegian, German or Portuguese were included. One case had to be excluded because a translation could not be obtained, i.e. Tokudo et al. (2015).It should also be mentioned that some of the cases have been reported more than once [6]. When a case occurs in several publications, this is indicated in the the supplementary materials. When considering only 'authentic' cases fulfilling the inclusion criteria, the number of cases amounted to 112 [7]: these were published between 1907 and October 2016. Parietal lobe (right) 36, 85 3 Corpus callosum 53 2Insular region (right) 11 2 Edwards et al. (2005) Case 1* 70/F/NI Traumatic hemorrhage Left parietal/basal ganglia/internal capsule acute: FAS: receded within 4 days (4 weeks follow-up), normal speech and articulation English  Welsh Confusion 43 Edwards et al. (2005) Case 2* 58/M/NI Hemorrhage Left basal ganglia acute: Normal speech and articulation, FAS persisted (1 year follow-up) English  Irish NI 44 Edwards et al. (2005) Case 3* 64/F/NI Infarction Left basal ganglia/internal capsule acute: impaired articulation, agrammatism...

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Section: Comorbid Speech and Language Disordersmentioning

confidence: 99%

Section: Comorbid Speech and Language Disordersmentioning

confidence: 99%

Section: Cognitive Deficits In Vascular Fasmentioning

confidence: 99%

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Neurological Aspects of Foreign Accent Syndrome in Stroke Patients

Mariën

Keulen

Verhoeven

2019

Journal of Communication Disorders

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“…Foreign accent syndrome (FAS) is a relatively rare motor speech disorder in which segmental and prosodic speech alterations cause patients to be perceived as non-native speakers of their mother tongue (Blumstein et al, 1987 ; Ingram et al, 1992 ; Lippert-Gruener et al, 2005 ; Pyun et al, 2013 ; Tran and Mills, 2013 ). In some cases, there is a reversion to a previously acquired language variety (Seliger et al, 1992 ; Kwon and Kim, 2006 ).…”

Section: Introductionmentioning

confidence: 99%

Developmental Foreign Accent Syndrome: Report of a New Case

Keulen

Mariën

Wackenier

et al. 2016

Front. Hum. Neurosci.

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This paper presents the case of a 17-year-old right-handed Belgian boy with developmental FAS and comorbid developmental apraxia of speech (DAS). Extensive neuropsychological and neurolinguistic investigations demonstrated a normal IQ but impaired planning (visuo-constructional dyspraxia). A Tc-99m-ECD SPECT revealed a significant hypoperfusion in the prefrontal and medial frontal regions, as well as in the lateral temporal regions. Hypoperfusion in the right cerebellum almost reached significance. It is hypothesized that these clinical findings support the view that FAS and DAS are related phenomena following impairment of the cerebro-cerebellar network.

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“…Yet, the perceived accent is described as Germanic. Finally, Pyun, Jang, Lim, Ha, and Cho (2013) describe an accent change from Korean to English (#63). The phonetic description mentions unusual rising pitch contours at the end of simple declaratives, prolonged intervals, slow rate, reduced fluency and initial consonant blocking.…”

Section: Most Cases Inmentioning

confidence: 99%

The common denominator in the perception of accents in cases with foreign accent syndrome

2016

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Background: Foreign accent syndrome (FAS) is a rare speech disorder leading to a perceived presence of a new accent in a speaker's speech. Until now, around 100 cases of FAS have been reported. It is striking that in most cases the perception of the accent is in one consistent direction, namely from languages like English or Dutch to accents of Romance, Germanic, Eastern European or tonal languages. Aims: In this article, we will try to come up with an overarching explanation for the accent changes seen in FAS, relating these changes to force of articulation. Main Contribution: We assume that the foreign accent in FAS is interpreted on the basis of the stereotypical segmental and prosodic characteristics that relate to the phonetics and phonology of specific languages. We hypothesise that the direction in perception of a FAS accent will go from a language characterised by relatively more lenition processes, into languages with relatively more fortition characteristics in their phonetic realisations and phonological system and not the other way around. Accents are expected to change from stress-timed to syllable-timed languages, from weight-sensitive stress systems to weight-insensitive systems, from non-aspirated to aspirated systems, and within these language groups from languages characterised by, for example, relatively more reduction and assimilation processes to languages with relatively less lenition. We have tested our hypothesis with the already described FAS cases. We restricted ourselves to the cases of neurogenic FAS described in English and to which enough details were provided in order to be able to judge the change of accent. Conclusions: From the 58 cases that fitted with these criteria, almost 90% showed a change of accent in the expected direction or did not contradict our hypothesis. Only six accent changes did not directly support it. The reported phonetic descriptions of the cases, if available, nevertheless suggest that they do not seem to completely violate our hypothesis.

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Neural substrate in a case of foreign accent syndrome following basal ganglia hemorrhage

Cited by 7 publications

References 25 publications

Neurological Aspects of Foreign Accent Syndrome in Stroke Patients

Neurological Aspects of Foreign Accent Syndrome in Stroke Patients

Developmental Foreign Accent Syndrome: Report of a New Case

The common denominator in the perception of accents in cases with foreign accent syndrome

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