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Nascimento VS, Coelho DDS, Chang Mulato JE, Filho JMC, Doria-Netto HL, Ferreira APVN, Chaddad-Neto F. Cerebral arteriovenous malformation and foreign accent syndrome: a case report. Br J Neurosurg 2022:1-5. [PMID: 35475414 DOI: 10.1080/02688697.2022.2057434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/07/2022] [Accepted: 03/20/2022] [Indexed: 11/02/2022]
Abstract
OBJECTIVE This case study aims to present the Foreign Accent Syndrome (FAS) in a patient with Cerebral Arteriovenous Malformation (cAVM), considering neuropsychological, radiological and microsurgical aspects. METHODS The patient underwent preoperative neuropsychological assessment and MRI and Tractography were performed to identify fibers close to the lesion site. In the surgical procedure, a craniotomy was performed for excision of the cAVM. After surgery and 6 months after the surgical procedure, the patient underwent further and neuropsychological evaluations. RESULTS The presence of AVM located in the posterior part of the medial surface of the left superior frontal gyrus was identified and the neuropsychological evaluation found cognitive deficits and symptoms characteristic of FAS, which disappeared after resection. CONCLUSION This report presented a case of cAVM in which symptoms were found even without rupture, which was no longer observed after the surgical procedure, demonstrating the relationship of cAVM with the symptoms and neuroanatomical bases of FAS.
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Affiliation(s)
| | - Daniela de Souza Coelho
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - José Maria Campos Filho
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
- Hospital Beneficência Portuguesa de São Paulo, São Paulo, Brazil
| | - Hugo Leonardo Doria-Netto
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
- Hospital Beneficência Portuguesa de São Paulo, São Paulo, Brazil
| | | | - Feres Chaddad-Neto
- Department of Neurology and Neurosurgery, Universidade Federal de São Paulo, São Paulo, Brazil
- Hospital Beneficência Portuguesa de São Paulo, São Paulo, Brazil
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Mariën P, Keulen S, Verhoeven J. Neurological Aspects of Foreign Accent Syndrome in Stroke Patients. JOURNAL OF COMMUNICATION DISORDERS 2019; 77:94-113. [PMID: 30606457 DOI: 10.1016/j.jcomdis.2018.12.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 11/28/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Foreign Accent Syndrome (FAS) is an intriguing motor speech disorder which has captured the interest of the scientific community and media for decades. At the moment, there is no comprehensive model which can account for the pathophysiology of this disorder. This paper presents a review of 112 FAS cases published between 1907 and October 2016: these were analyzed with respect to demographic characteristics, lesion location, associated neurocognitive symptoms, and comorbid speech and language disorders. The analysis revealed that organic-neurogenic FAS is more frequent in women than in men. In organic-neurogenic FAS over half of the patients acquired the foreign accent after a stroke. Their lesions are typically located in the left supratentorial regions of the brain, and generally involve the primary motor cortex and premotor cortex (BA 4 and 6), and/or the basal ganglia. Although neurocognitive data are not consistently reported, vascular FAS patients regularly suffer frontal executive dysfunctions. On the basis of a careful comparison of the cognitive and theoretical accounts of FAS, AoS and ataxic dysarthria, it is concluded that FAS should be regarded a dual component motor speech disorder in which both planning and motor execution of speech may be affected.
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Affiliation(s)
- Peter Mariën
- Clinical and Experimental Neurolinguistics, CLIN, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium; Department of Neurology and Memory Clinic, ZNA Middelheim Hospital, Antwerp, Belgium; Royal Flemish Academy of Belgium for Science and the Arts, Paleis der Academiën, Hertogsstraat 1, B-1000, Brussel, Belgium
| | - Stefanie Keulen
- Clinical and Experimental Neurolinguistics, CLIN, Vrije Universiteit Brussel, Pleinlaan 2, B-1050, Brussels, Belgium
| | - Jo Verhoeven
- Royal Flemish Academy of Belgium for Science and the Arts, Paleis der Academiën, Hertogsstraat 1, B-1000, Brussel, Belgium; Division of Language and Communication Science, City, University of London, Northampton Square, London, EC1V 0HB, UK; Computational Linguistics and Psycholinguistics Research Centre, University of Antwerp, Prinsstraat 13, B-2000, Antwerp, Belgium.
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Keulen S, Verhoeven J, Bastiaanse R, Mariën P, Jonkers R, Mavroudakis N, Paquier P. Perceptual Accent Rating and Attribution in Psychogenic FAS: Some Further Evidence Challenging Whitaker's Operational Definition. Front Hum Neurosci 2016; 10:62. [PMID: 26973488 PMCID: PMC4773440 DOI: 10.3389/fnhum.2016.00062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 02/08/2016] [Indexed: 11/13/2022] Open
Abstract
A 40-year-old, non-aphasic, right-handed, and polyglot (L1: French, L2: Dutch, and L3: English) woman with a 12-year history of addiction to opiates and psychoactive substances, and clear psychiatric problems, presented with a foreign accent of sudden onset in L1. Speech evolved toward a mostly fluent output, despite a stutter-like behavior and a marked grammatical output disorder. The psychogenic etiology of the accent foreignness was construed based on the patient's complex medical history and psychodiagnostic, neuropsychological, and neurolinguistic assessments. The presence of a foreign accent was affirmed by a perceptual accent rating and attribution experiment. It is argued that this patient provides additional evidence demonstrating the outdatedness of Whitaker's (1982) definition of foreign accent syndrome, as only one of the four operational criteria was unequivocally applicable to our patient: her accent foreignness was not only recognized by her relatives and the medical staff but also by a group of native French-speaking laymen. However, our patient defied the three remaining criteria, as central nervous system damage could not conclusively be demonstrated, psychodiagnostic assessment raised the hypothesis of a conversion disorder, and the patient was a polyglot whose newly gained accent was associated with a range of foreign languages, which exceeded the ones she spoke.
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Affiliation(s)
- Stefanie Keulen
- Clinical and Experimental Neurolinguistics (CLIEN), Vrije Universiteit Brussel, Brussels, Belgium; Center for Language and Cognition Groningen (CLCG), Rijksuniversiteit Groningen, Groningen, Netherlands
| | - Jo Verhoeven
- Computational Linguistics and Psycholinguistics Research Center (CLIPS), Universiteit Antwerpen, Antwerp, Belgium; Department of Language and Communication Science, City University London, London, UK
| | - Roelien Bastiaanse
- Center for Language and Cognition Groningen (CLCG), Rijksuniversiteit Groningen , Groningen , Netherlands
| | - Peter Mariën
- Clinical and Experimental Neurolinguistics (CLIEN), Vrije Universiteit Brussel, Brussels, Belgium; Department of Neurology and Memory Clinic, ZNA Middelheim General Hospital, Antwerp, Belgium
| | - Roel Jonkers
- Center for Language and Cognition Groningen (CLCG), Rijksuniversiteit Groningen , Groningen , Netherlands
| | - Nicolas Mavroudakis
- Department of Neurology, Erasme University Hospital, Université Libre de Bruxelles , Brussels , Belgium
| | - Philippe Paquier
- Clinical and Experimental Neurolinguistics (CLIEN), Vrije Universiteit Brussel, Brussels, Belgium; Department of Neurology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium; Unit of Translational Neurosciences, Universiteit Antwerpen, Antwerp, Belgium
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Heffner CC, Slevc LR. Prosodic Structure as a Parallel to Musical Structure. Front Psychol 2015; 6:1962. [PMID: 26733930 PMCID: PMC4687474 DOI: 10.3389/fpsyg.2015.01962] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 12/07/2015] [Indexed: 11/13/2022] Open
Abstract
What structural properties do language and music share? Although early speculation identified a wide variety of possibilities, the literature has largely focused on the parallels between musical structure and syntactic structure. Here, we argue that parallels between musical structure and prosodic structure deserve more attention. We review the evidence for a link between musical and prosodic structure and find it to be strong. In fact, certain elements of prosodic structure may provide a parsimonious comparison with musical structure without sacrificing empirical findings related to the parallels between language and music. We then develop several predictions related to such a hypothesis.
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Affiliation(s)
- Christopher C. Heffner
- Program in Neuroscience and Cognitive Science, University of Maryland, College ParkMD, USA
- Department of Linguistics, University of Maryland, College ParkMD, USA
- Department of Hearing and Speech Sciences, University of Maryland, College ParkMD, USA
| | - L. Robert Slevc
- Program in Neuroscience and Cognitive Science, University of Maryland, College ParkMD, USA
- Department of Psychology, University of Maryland, College ParkMD, USA
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Moreno-Torres I, Berthier ML, Mar Cid MD, Green C, Gutiérrez A, García-Casares N, Froudist Walsh S, Nabrozidis A, Sidorova J, Dávila G, Carnero-Pardo C. Foreign accent syndrome: A multimodal evaluation in the search of neuroscience-driven treatments. Neuropsychologia 2013. [DOI: 10.1016/j.neuropsychologia.2012.11.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Van Lancker Sidtis D, Kempler D, Jackson C, Metter EJ. Prosodic changes in aphasic speech: timing. CLINICAL LINGUISTICS & PHONETICS 2010; 24:155-67. [PMID: 20100044 PMCID: PMC5999022 DOI: 10.3109/02699200903464439] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Controversy remains about the impairment of prosody in aphasia, particularly with regard to speech timing. This paper addresses this topic through an analysis of timing in four sets of a common morphological paradigm. The paradigm consisted of a basic form (stem) and two longer derived forms (e.g. zip, zipper, zippering). Normally, vowel durations are shorter in longer derived forms (e.g. zippering) than in the stem (e.g. zip), due to a process called 'initial shortening'. Twelve patients with aphasia (four each Broca, Wernicke, and Anomic), and 11 age-matched healthy adults were assessed. Structural (CT) and functional brain imaging (PET) were available for all patients. While all groups showed initial shortening between the stem and the derived forms, the patients with Broca's aphasia presented an inverse pattern between the two derived forms (longer initial vowel in 'zippering' than 'zipper'), and the patients with Wernicke's aphasia produced significantly longer vowel durations overall than the healthy participants. The results are related to radiological information regarding the location of structural and functional brain damage and relative preservation and loss of prosodic features in cerebral damage.
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Mariën P, Verhoeven J, Wackenier P, Engelborghs S, De Deyn PP. Foreign accent syndrome as a developmental motor speech disorder. Cortex 2008; 45:870-8. [PMID: 19121521 DOI: 10.1016/j.cortex.2008.10.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2008] [Revised: 08/14/2008] [Accepted: 10/31/2008] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Foreign Accent Syndrome (FAS) is a relatively rare motor speech disorder in which the pronunciation of a patient is perceived by listeners of the same language community as distinctly foreign. FAS has been well documented in adult patients with etiologically heterogeneous, though mostly vascular brain lesions affecting the motor speech network of the language dominant hemisphere. In addition, reports exist of adult patients in whom FAS was due to a psychiatric illness. Although FAS has been reported in children, such accounts are rare and have remained largely anecdotal in that there have been no formally documented cases of FAS as a developmental motor speech disorder. METHODS AND RESULTS For the first time, we describe the clinical, cognitive and neurolinguistic findings in two patients who in the absence of a history of psychiatric illness or acquired brain damage already presented with FAS at an early stage of speech and language development. In the first patient "developmental FAS" was associated with a dysharmonic distribution of neurocognitive test results indicating slight underdevelopment of visuo-spatial skills and visual memory. The second patient presented with "developmental FAS" associated with specific language impairment (SLI). Independent support for a diagnosis of FAS in both patients was obtained in an accent attribution experiment in which groups of native speakers of (Belgian) Dutch assessed the type of foreign accent of a sample of the patients' conversational speech. Both patients were judged as non-native speakers of Dutch by the majority of participants who predominantly identified the accent as French. CONCLUSION This paper for the first time documents two patients who presented with FAS on a developmental basis. The finding that FAS does not only occur in the context of acquired brain damage or psychogenic illness but also exists as developmental motor speech impairment requires a re-definition of FAS as a clinical syndrome.
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Affiliation(s)
- Peter Mariën
- Department of Neurology and Memory Clinic, ZNA Middelheim General Hospital and Laboratory of Neurochemistry and Behaviour, Born-Bunge Foundation, University of Antwerp, Antwerp, Belgium.
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Mariën P, Verhoeven J. Cerebellar Involvement in Motor Speech Planning: Some Further Evidence from Foreign Accent Syndrome. Folia Phoniatr Logop 2007; 59:210-7. [PMID: 17627130 DOI: 10.1159/000102933] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Foreign accent syndrome (FAS) is a rare speech disorder that usually follows from damage to the motor speech areas of the language-dominant hemisphere. Recently, a vascular FAS patient was reported in whom a close parallelism was found between the infratentorial perfusional changes on SPECT and the regression of FAS symptoms. Based on the correlation between the near remission of a right cerebellar hypoperfusion and the near remission of FAS, it was hypothesized that the 'linguistic cerebellum' might be involved in the pathogenesis of motor speech planning disorders [Clin Neurol Neurosurg 2006;108:518-522]. AIM In this article the presumed role of the cerebellum in FAS is further investigated on the basis of an additional FAS case. METHODS Phonetic, neurobehavioral and neuroimaging data were analyzed and clinical-anatomical correlations were investigated. RESULTS In both patients, a close correspondence was found between the neurolinguistic findings and the functional neuroimaging data. (99m)Tc ECD SPECT follow-up studies demonstrated that clinical recovery of FAS symptoms was accompanied by a remission of a right cerebellar hypoperfusion. CONCLUSION The present study, in which the data of a new FAS patient are discussed, corroborates the view that FAS may follow disruption of a close functional interplay between the supra- and infratentorial motor speech centers.
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Affiliation(s)
- Peter Mariën
- Department of Neurology, ZNA Middelheim General Hospital, Antwerp, Belgium.
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Terao Y, Ugawa Y, Yamamoto T, Sakurai Y, Masumoto T, Abe O, Masutani Y, Aoki S, Tsuji S. Primary face motor area as the motor representation of articulation. J Neurol 2007; 254:442-7. [PMID: 17380243 DOI: 10.1007/s00415-006-0385-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2006] [Revised: 05/31/2006] [Accepted: 06/06/2006] [Indexed: 10/23/2022]
Abstract
No clinical data have yet been presented to show that a lesion localized to the primary motor area (M1) can cause severe transient impairment of articulation, although a motor representation for articulation has been suggested to exist within M1. Here we describe three cases of patients who developed severe dysarthria, temporarily mimicking speech arrest or aphemia, due to a localized brain lesion near the left face representation of the human primary motor cortex (face-M1). Speech was slow, effortful, lacking normal prosody, and more affected than expected from the degree of facial or tongue palsy. There was a mild deficit in tongue movements in the sagittal plane that impaired palatolingual contact and rapid tongue movements. The speech disturbance was limited to verbal output, without aphasia or orofacial apraxia. Overlay of magnetic resonance images revealed a localized cortical region near face-M1, which displayed high intensity on diffusion weighted images, while the main portion of the corticobulbar fibers arising from the lower third of the motor cortex was preserved. The cases suggest the existence of a localized brain region specialized for articulation near face-M1. Cortico-cortical fibers connecting face-M1 with the lower premotor areas including Broca's area may also be important for articulatory control.
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Affiliation(s)
- Yasuo Terao
- Department of Neurology, Division of Neuroscience, Graduate School of Medicine University of Tokyo, 7-3-1 Hongo Bunkyo-ku1, 13-8655 Tokyo, Japan.
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Van Borsel J, Janssens L, Santens P. Foreign accent syndrome: an organic disorder? JOURNAL OF COMMUNICATION DISORDERS 2005; 38:421-9. [PMID: 16199237 DOI: 10.1016/j.jcomdis.2005.03.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2004] [Revised: 02/07/2005] [Accepted: 03/24/2005] [Indexed: 05/04/2023]
Abstract
This paper reports the case of a 32-year-old Dutch speaking woman who presented with foreign accent syndrome (FAS). There are good reasons to believe that the speech disturbance in this patient was of psychogenic origin. This case suggests that attested brain damage is not a prerequisite for a speech disorder to qualify as FAS and that FAS is not necessarily linked to another neurogenic speech disorder. It is argued that FAS is not a syndrome in its own right but only exists in the ears of the beholder. LEARNING OUTCOME: Readers will be able to describe the features that are believed to be typical of the foreign accent syndrome. Readers will be able to summarize the arguments that can be adduced to consider the foreign accent syndrome as an epiphenomenona.
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Riecker A, Ackermann H, Wildgruber D, Meyer J, Dogil G, Haider H, Grodd W. Articulatory/phonetic sequencing at the level of the anterior perisylvian cortex: a functional magnetic resonance imaging (fMRI) study. BRAIN AND LANGUAGE 2000; 75:259-276. [PMID: 11049668 DOI: 10.1006/brln.2000.2356] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Damage to the anterior peri-intrasylvian cortex of the dominant hemisphere may give rise to a fairly consistent syndrome of articulatory deficits in the absence of relevant paresis of orofacial or laryngeal muscles (apraxia of speech, aphemia, or phonetic disintegration). The available clinical data are ambiguous with respect to the relevant lesion site, indicating either dysfunction of the premotor aspect of the lower precentral gyrus or the anterior insula in the depth of the Sylvian fissure. In order to further specify the functional anatomic substratum of this syndrome, functional magnetic resonance imaging (fMRI) was performed during reiteration of syllables differing in their demands on articulatory/phonetic sequencing (CV versus CCCV versus CVCVCV). Horizontal tongue movements and a polysyllabic lexical item served as control conditions. Repetition of the CV and CCCV monosyllables elicited a rather bilateral symmetric hemodynamic response at the level of the anterior and posterior bank of the central sulcus (primary sensorimotor cortex), whereas a more limited area of neural activity arose within this domain during production of lexical and nonlexical polysyllables, significantly or exclusively lateralized toward the left hemisphere. There is neurophysiological evidence that primary sensorimotor cortex mediates the "fractionation" of movements. Assuming that the polysyllables considered are organized as coarticulated higher-order units, the observed restricted and lateralized cortical activation pattern, most presumably, reflects a mode of "nonindividualized" motor control posing fewer demands on "movement fractionation." These findings may explain the clinical observation of disproportionately worse repetition of trisyllabic items as compared to monosyllables in apraxia of speech. The various test materials failed to elicit significant activation of the anterior insula. If at all, only horizontal tongue movements yielded a hemodynamic reaction extending beyond the sensorimotor cortex to premotor areas. Since limbic projections target the inferior dorsolateral frontal lobe, the enlarged region of activation during horizontal tongue movements might reflect increased attentional requirements of this task.
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Affiliation(s)
- A Riecker
- Department of Neurology, University of Tübingen, Germany
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Roth EJ, Fink K, Cherney LR, Hall KD. Reversion to a previously learned foreign accent after stroke. Arch Phys Med Rehabil 1997; 78:550-2. [PMID: 9161381 DOI: 10.1016/s0003-9993(97)90176-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Foreign accent syndrome occurs rarely after stroke. Most patients with this syndrome develop an aphasia characterized by a new accent. This report presents a 48-year-old man who sustained a left parietal hemorrhagic stroke resulting in right hemiparesis and the inability to speak. As spontaneous speech emerged several weeks later, he was noted to have a Broca's aphasia and a Dutch accent. Analysis of his speech demonstrated final consonant deletion, substitution of "d" for "th" sounds, vowel distortions, additional "uh" syllables added at the end of words, and errors in voicing. This speech pattern has persisted for more than 5 years after the stroke. Elicitation of additional history found that the patient was born in Holland and lived there until the age of 5 years, when he moved to the United States with his family. Before his stroke, he had no foreign accent. This report illustrates the importance of considering foreign accent syndrome during aphasia recovery and suggests several pathogenetic mechanisms that may contribute to the development of this syndrome.
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Affiliation(s)
- E J Roth
- Department of Physical Medicine and Rehabilitation, Northwestern University Medical School, Chicago, IL, USA
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Abstract
BACKGROUND We describe a patient who presented a unique variation of the previously described acquired foreign accent syndrome. CASE DESCRIPTION A 65-year-old women developed an Irish brogue immediately after a deep left hemisphere stroke. The newly accented speech possibly represented a previously learned speech pattern. CONCLUSIONS Suppressed prosodic speech patterns may reemerge in the setting of brain injury.
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Affiliation(s)
- G M Seliger
- Department of Neurology, College of Physicians and Surgeons, Columbia University, New York
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Gurd JM, Bessell NJ, Bladon RA, Bamford JM. A case of foreign accent syndrome, with follow-up clinical, neuropsychological and phonetic descriptions. Neuropsychologia 1988; 26:237-51. [PMID: 3399041 DOI: 10.1016/0028-3932(88)90077-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We report a comparatively 'pure' case of 'foreign accent syndrome' (FAS) in a right-handed patient who sustained a small, isolated, left basal ganglia infarct. At 3 weeks post-onset FAS persisted in the absence of aphasic disorder. Phonetic analysis of the patient's speech was undertaken at that time and a further, more detailed acoustic and phonetic investigation, was undertaken at 8 months. The validity and significance of the term 'FAS' is discussed.
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Affiliation(s)
- J M Gurd
- Neuropsychology Unit, Radcliffe Infirmary, Oxford, U.K
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A case of foreign accent syndrome, with follow-up clinical, Neuropsychological and phonetic descriptions. Neuropsychologia 1988. [DOI: 10.1016/0028-3932%2888%2990077-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Van Lancker DR, Bogen JE, Canter GJ. A case report of pathological rule-governed syllable intrusion. BRAIN AND LANGUAGE 1983; 20:12-20. [PMID: 6578863 DOI: 10.1016/0093-934x(83)90028-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A detailed analysis of a unique speech disturbance, marked by the frequent appearance in the speech stream of a meaningless intrusive syllable, is presented. Following a lengthy thoracic surgery, an American English speaking patient began to speak with non-English prosodic patterns, which evolved to a conspicuous intrusion in his speech of the syllable /sis/. This syllable and its variants were attached to words in a manner which conformed to the regular phonological rules in English (for formation of plural, possessive, and third person singular morphemes). The distribution and frequency of the intrusive syllable are described, and possible explanations for the abnormal occurrence of this particular syllable are discussed.
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Gustafson L, Risberg J. Regional cerebral blood flow related to psychiatric symptoms in dementia with onset in the presenile period. Acta Psychiatr Scand 1974; 50:516-38. [PMID: 4618029 DOI: 10.1111/j.1600-0447.1974.tb09713.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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