Foreign accent syndrome caused by a left temporal–parietal ischaemic stroke

2011 ◽  
Vol 23 (5) ◽  
pp. 249-251 ◽  
Author(s):  
Panagiotis Karanasios ◽  
Paraskevi Loukopoulou ◽  
Petros Zampakis ◽  
Thomas Tiligadas ◽  
Alexandra Makridou ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Brain Magnetic Resonance Imaging ◽  
Angular Gyrus ◽  
Foreign Accent ◽  
Magnetic Resonance Imaging Scan ◽  
Middle Temporal ◽  
Left Posterior ◽  
Foreign Accent Syndrome ◽  
Posterior Insula ◽  
Temporal Lesion

Karanasios P, Loukopoulou P, Zampakis P, Tiligadas T, Makridou A, Doukas V, Argyriou AA. Foreign accent syndrome caused by a left temporal–parietal ischaemic stroke.Aim: We present the first reported case of a Greek patient with foreign accent syndrome (FAS) secondary to a left temporal-parietal ischemic stroke.Case report: A 76 year-old right-handed, Greek in origin, male was referred because he had suddenly manifested changes in speech expression. The neurological examination revealed that his prior typical English-Australian accent resembled a mixture of Greek and English-Britain accent consistent with FAS, though he had visited only once Greece the last 15 years and never had been to United Kingdom.Results: A brain Magnetic Resonance Imaging scan depicted an ischemic temporal lesion in the language-dominant left hemisphere, affecting the left posterior superior and middle temporal gyri, as well as the ipsilateral inferior supramarginal angular gyrus and posterior insula.Conclusion: We might suggest that FAS in our patient was induced because of interrupted cortical-subcortical feedback pathways. The phenomenon of subcortical-cortical diaschisis might also have contributed to its clinical manifestation.

scholarly journals Dyscalculia, Dysgraphia, and Left-Right Confusion from a Left Posterior Peri-Insular Infarct

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
S. Bhattacharyya ◽  
X. Cai ◽  
J. P. Klein
Keyword(s):  
Parietal Lobe ◽  
Angular Gyrus ◽  
Functional Networks ◽  
Resonance Imaging ◽  
Imaging Studies ◽  
Left Posterior ◽  
Acute Infarct ◽  
Posterior Insula ◽  
Magnetic Resonance Imaging Mri ◽  
Insular Region

The Gerstmann syndrome of dyscalculia, dysgraphia, left-right confusion, and finger agnosia is generally attributed to lesions near the angular gyrus of the dominant hemisphere. A 68-year-old right-handed woman presented with sudden difficulty completing a Sudoku grid and was found to have dyscalculia, dysgraphia, and left-right confusion. Magnetic resonance imaging (MRI) showed a focus of abnormal reduced diffusivity in the left posterior insula and temporoparietal operculum consistent with acute infarct. Gerstmann syndrome from an insular or peri-insular lesion has not been described in the literature previously. Pathological and functional imaging studies show connections between left posterior insular region and inferior parietal lobe. We postulate that the insula and operculum lesion disrupted key functional networks resulting in a pseudoparietal presentation.

Foreign accent syndrome as a first sign of multiple sclerosis

2009 ◽  
Vol 15 (9) ◽  
pp. 1123-1125 ◽  
Author(s):  
JB Chanson ◽  
S Kremer ◽  
F Blanc ◽  
C Marescaux ◽  
IJ Namer ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Right Hemisphere ◽  
Brain Mri ◽  
Photon Emission ◽  
Brain Magnetic Resonance Imaging ◽  
Foreign Accent ◽  
Oligoclonal Bands ◽  
Emission Computed Tomography ◽  
Initial Symptom ◽  
Foreign Accent Syndrome

Background Foreign accent syndrome (FAS) consists of a speech rhythm disorder different from dysarthia or aphasia. It is unusually met in multiple sclerosis (MS). Objective We report a case of FAS as an initial symptom of a MS. Methods A right-handed French woman developed an isolated German foreign accent. Brain magnetic resonance imaging (MRI), SPECT and analysis of CSF were performed. Results Brain MRI revealed a large hypersignal on T2-weighted images in the left prerolandic white matter. Single photon emission computed tomography showed a right prerolandic hypoperfusion. Unmatched oligoclonal bands in cerebrospinal fluid and occurrence of new abnormal hypersignals on the following MRI led us to diagnose MS. Conclusion FAS may be the first symptom of MS. It could result from extensive disturbances of brain function involving the right hemisphere.

scholarly journals Speaking in the Brain: The Interaction between Words and Syntax in Sentence Production

2020 ◽  
Vol 32 (8) ◽  
pp. 1466-1483
Author(s):  
Atsuko Takashima ◽  
Agnieszka Konopka ◽  
Antje Meyer ◽  
Peter Hagoort ◽  
Kirsten Weber
Keyword(s):  
Language Production ◽  
Inferior Frontal Gyrus ◽  
Sentence Production ◽  
Angular Gyrus ◽  
Middle Temporal Gyrus ◽  
Temporal Region ◽  
Middle Temporal ◽  
Sentence Level ◽  
Left Posterior ◽  
Language Network

This neuroimaging study investigated the neural infrastructure of sentence-level language production. We compared brain activation patterns, as measured with BOLD-fMRI, during production of sentences that differed in verb argument structures (intransitives, transitives, ditransitives) and the lexical status of the verb (known verbs or pseudoverbs). The experiment consisted of 30 mini-blocks of six sentences each. Each mini-block started with an example for the type of sentence to be produced in that block. On each trial in the mini-blocks, participants were first given the (pseudo-)verb followed by three geometric shapes to serve as verb arguments in the sentences. Production of sentences with known verbs yielded greater activation compared to sentences with pseudoverbs in the core language network of the left inferior frontal gyrus, the left posterior middle temporal gyrus, and a more posterior middle temporal region extending into the angular gyrus, analogous to effects observed in language comprehension. Increasing the number of verb arguments led to greater activation in an overlapping left posterior middle temporal gyrus/angular gyrus area, particularly for known verbs, as well as in the bilateral precuneus. Thus, producing sentences with more complex structures using existing verbs leads to increased activation in the language network, suggesting some reliance on memory retrieval of stored lexical–syntactic information during sentence production. This study thus provides evidence from sentence-level language production in line with functional models of the language network that have so far been mainly based on single-word production, comprehension, and language processing in aphasia.

scholarly journals Effects of selective intracarotid cerebral hypothermia on the size of ischaemic stroke in an experiment

2020 ◽  
Vol 24 (3) ◽  
pp. 112
Author(s):  
E. I. Fartakov ◽  
V. V. Lomivorotov ◽  
D. U. Malaev ◽  
A. R. Tarkova ◽  
A. A. Boykov ◽  
...  
Keyword(s):  
Ischaemic Stroke ◽  
Conflict Of Interest ◽  
Brain Magnetic Resonance Imaging ◽  
Basic Research ◽  
Control Group ◽  
Magnetic Resonance Imaging Scan ◽  
Study Results ◽  
Before And After ◽  
System Temperature ◽  
Hypothermia Group

<p><strong>Background.</strong> Ischaemic stroke is one of the leading causes of death and disability worldwide. Selective intracarotid cerebral hypothermia is one of the promising methods to prevent ischaemic stroke. However, currently available studies do not allow us to conclude the effectiveness of applying this method in humans and assess its effect on the system temperature.</p><p><strong>Aim.</strong> To investigate the effect of selective intracarotid cerebral hypothermia on the size of ischaemic stroke in large pigs, determining the optimal period of hypothermia and the severity of the effects of intracarotid hypothermia on the system temperature.</p><p><strong>Methods.</strong> The study was conducted on mini-pigs weighing 30–70 kg and included two stages. During the first stage, pigs were divided into two groups: control (n = 4) and intracarotid hypothermia for 3 h, exciting periods before and after reperfusion (n = 2). During the second stage, animals were also divided into two groups: hypothermia group within 1.5 h before reperfusion (n = 2) and hypothermia group within 1.5 h after reperfusion (n = 2). The technique for modelling ischaemic stroke was the same as in all groups and consisted of frontotemporal craniotomy and compression of the middle cerebral artery for 3 h. Intracarotid hypothermia was performed by infusing + 4 °C NaCl solution in the ascending pharyngeal artery. At 48 h after starting the experiment, a brain magnetic resonance imaging scan was performed to determine the size of the stroke.</p><p><strong>Results.</strong> The mean size of the stroke focusing in the control group was 10.75%, in the hypothermia group before reperfusion (10.95%) and in the hypothermia group after reperfusion (1.65%) of the volume of the cerebral hemisphere. The stroke size in the hypothermia group for 3 h could not be determined due to complications that developed in animals intraoperatively and postoperatively. The effect of intracarotid hypothermia on the systemic temperature in an animal weighing 65 kg was 0.4 °C.</p><p><strong>Conclusion.</strong> Based on the study results, a marked decrease in the focus of ischaemic stroke was found with the use of intracarotid hypothermia within 1.5 h after reperfusion. Intracarotid hypothermia was found to do not have a pronounced effect on the system temperature.</p><p>Received 2 May 2020. Revised 20 May 2020. Accepted 25 May 2020.</p><p><strong>Funding:</strong> The work is supported by a grant of the Russian Foundation for Basic Research (project No. 18-415-540025).</p><p><strong>Conflict of interest:</strong> Authors declare no conflict of interest.</p><p><strong>Author contributions</strong><br />Conception and study design: E.I. Fartakov, V.V. Lomivorotov, E.I. Kretov, A.R. Tarkova<br />Data collection and analysis: D.U. Malaev, A.A. Boykov, A.A. Prokhorikhin, D.V. Volchenko, I.S. Zykov, P.O. Seleznev<br />Drafting the article: E.I. Fartakov, D.U. Malaev, A.R. Tarkova<br />Critical revision of the article: E.I. Kretov, V.V. Lomivorotov, V.I. Baystrukov, N.I. Grachev, D.S. Sergeevichev, A.M. Chernyavskiy<br />Final approval of the version to be published: E.I. Fartakov, V.V. Lomivorotov, D.U. Malaev, A.R. Tarkova, A.A. Boykov, <br />A.A. Prokhorikhin, D.V. Volchenko, I.S. Zykov, P.O. Seleznev, V.I. Baystrukov, N.I. Grachev, D.S. Sergeevichev, A.M. Chernyavskiy, E.I. Kretov</p>

Impaired emotional processing in a patient with a left posterior insula-SII lesion

Neurocase ◽  
2013 ◽  
Vol 19 (6) ◽  
pp. 592-603 ◽  
Author(s):  
Céline Borg ◽  
Nathalie Bedoin ◽  
Roland Peyron ◽  
Soline Bogey ◽  
Bernard Laurent ◽  
...  
Keyword(s):  
Emotional Processing ◽  
Left Posterior ◽  
Posterior Insula

scholarly journals Speech in the foreign accent syndrome: differential diagnosis between organic and functional cases

2020 ◽  
Vol 14 (3) ◽  
pp. 329-332
Author(s):  
Simone dos Santos Barreto ◽  
Karin Zazo Ortiz
Keyword(s):  
Foreign Language ◽  
Speech Intelligibility ◽  
Native Speakers ◽  
Foreign Accent ◽  
Prior History ◽  
Speech Impairments ◽  
Foreign Accent Syndrome ◽  
History Of ◽  
Transient Events ◽  
Classic Form

ABSTRACT. Foreign accent syndrome (FAS) is an extremely rare disorder, with 112 cases described until 2019. We compare two cases of the foreign accent syndrome in native speakers of Brazilian Portuguese in its classic form (FAS) and psychiatric variant (FALS). Two cases were analyzed: (1) a right-handed, 69-year-old man, with a prior history of stroke, and (2) a right-handed, 43-year-old woman, diagnosed with schizophrenia. They were evaluate for language and speech, including the speech intelligibility. Both patients had speech impairments complaints, similar to a new accent, without previous exposure to a foreign language. However, the onset of the speech disorder was sudden in case 1 and insidious and with transient events in case 2, with speech intelligibility scores of 95.5 and 55.3% respectively. Besides neurologic impairment, the clinical presentation of FALS was extremely severe and differed to that expected in FAS cases, in which speech intelligibility is preserved.

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