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Atypical language lateralization in epilepsy patients

Gabriel Möddel, Tara Lineweaver, Stephan U. Schuele, Julia Reinholz, Tobias Loddenkemper
2009 Epilepsia  
Methods: Four hundred and forty-five epilepsy patients received bilateral Wada testing.  ...  In contrast, BI language may represent a variant with functional language representation in both hemispheres.  ...  We confirm that we have read the Journal's position on issues involved in ethical publication and affirm that this report is consistent with those guidelines.  ... 
doi:10.1111/j.1528-1167.2008.02000.x pmid:19243420 fatcat:7y53falexrejdn7wndbqzov3p4

Functionele Transcraniële Doppler voor taallateralisatie

Cyrille Ferrier
2018 Epilepsie, periodiek voor professionals  
Wada-test.  ...  In deze bijdrage een verslag van een onderzoek bij epilepsiechirurgiekandidaten voor wie met behulp van functionele Transcraniële Doppler werd vastgesteld welke hemisfeer taaldominant was.  ...  Daarnaast zal moeten blijken patients with temporal lobe epilepsy: a comparison of of fTCD in staat is om lateralisatie van andere cognitieve functional transcranial Doppler sonography and the domeinen  ... 
doi:10.54160/epilepsie.11265 fatcat:4uvijioqszcc7gcx2q3vyakova

Temporal lobe white matter asymmetry and language laterality in epilepsy patients

Timothy M. Ellmore, Michael S. Beauchamp, Joshua I. Breier, Jeremy D. Slater, Giridhar P. Kalamangalam, Thomas J. O'Neill, Michael A. Disano, Nitin Tandon
2010 NeuroImage  
In this study of epilepsy patients with unambiguous lateralization on Wada testing (19 left and 4 right lateralized subjects; no bilateral subjects), the predictive value of DTI for classifying the dominant  ...  matter pathways terminating in the temporal lobe implicated in different aspects of language function: the arcuate (AF), uncinate (UF), and inferior longitudinal fasciculi (ILF).  ...  Acknowledgments Funding This project was supported by the Epilepsy Foundation through the generous support of the Gertrude A.  ... 
doi:10.1016/j.neuroimage.2009.10.055 pmid:19874899 pmcid:PMC2818356 fatcat:uqlbh4drcrbdli6zpdqpj62rjq

Noninvasive Determination of Language Lateralization by Functional Transcranial Doppler Sonography

S. Knecht, M. Deppe, A. Ebner, H. Henningsen, T. Huber, H. Jokeit, E.-B. Ringelstein
1998 Stroke  
and Purpose-Functional transcranial Doppler ultrasonography (fTCD) can assess event-related changes in cerebral blood flow velocities and, by comparison between sides, can provide a measure of hemispheric  ...  Methods-fTCD and the Wada test were performed in 19 patients evaluated for epilepsy surgery.  ...  Acknowledgment This study was supported by the Bennigsen-Foerder grant from the Ministry of Science and Research of Nordrhein-Westfalen, Germany.  ... 
doi:10.1161/01.str.29.1.82 pmid:9445333 fatcat:zcapopwu2jcjbkxteypxc6ot4e

A voxel-based asymmetry study of the relationship between hemispheric asymmetry and language dominance in Wada tested patients

Simon S. Keller, Neil Roberts, Gus Baker, Vanessa Sluming, Enis Cezayirli, Andrew Mayes, Paul Eldridge, Anthony G. Marson, Udo C. Wieshmann
2018 Human Brain Mapping  
However, these patients and controls differed in structural asymmetry of the mesial temporal lobe and a circumscribed region in the superior temporal gyrus, suggesting that only asymmetries of these regions  ...  Additional comparisons between patients with left and right HLD, matched for type and location of epilepsy, revealed that structural asymmetries of insula, pars triangularis, inferior temporal gyrus, orbitofrontal  ...  In patients with left HLD, Oh and Koh (2009) reported leftward volume asymmetry of the planum temporale in 30/31 (97%) of patients with right temporal lobe epilepsy (TLE), and in 15/17 (88%) of patients  ... 
doi:10.1002/hbm.24058 pmid:29569808 pmcid:PMC6055618 fatcat:wgtgf5prn5deljwfwpnofas7hm

Cortical stimulation mapping and Wada results demonstrate a normal variant of right hemisphere language organization

Daniel L. Drane, Jenny Roraback-Carson, Adam O. Hebb, Tamir Hersonskey, Timothy Lucas, George A. Ojemann, Ettore Lettich, Daniel L. Silbergeld, John W. Miller, Jeffrey G. Ojemann
2012 Epilepsia  
Purpose-Exclusive right hemisphere language lateralization is rarely observed in the Wada angiography results of epilepsy surgery patients.  ...  We present data from CSM and Wada studies demonstrating that right hemisphere language occurs in the absence of left hemisphere pathology, suggesting it can exist as a normal, but rare variant, in some  ...  Acknowledgments This research was supported in part by the National Institute of Neurological Disorders and Stroke (NINDS) of the National Institute of Health (NIH) [Grant Numbers: K23 NSO49100 and K02  ... 
doi:10.1111/j.1528-1167.2012.03573.x pmid:22780099 pmcid:PMC3463744 fatcat:rq2kswi7w5fr5c3zncp2gnvsoa

Presurgical Functional Cortical Mapping Using Electromagnetic Source Imaging

Rudolf Kreidenhuber, Xavier De Tiège, Stefan Rampp
2019 Frontiers in Neurology  
to invasive methods like the intracarotid Amobarbital Test (WADA-Test) or intracranial investigations.  ...  We highlight strengths, weaknesses and limitations of these functional cortical mapping modalities based on findings in the recent literature.  ...  Diagnostic accuracy of functional magnetic resonance imaging, wada test, magnetoencephalography, and functional transcranial doppler sonography for memory and language outcome after epilepsy surgery: a  ... 
doi:10.3389/fneur.2019.00628 pmid:31249552 pmcid:PMC6584755 fatcat:xqyizjh4gzfs5d67nekwtrpykm

Assessing Cognitive Change and Quality of Life 12 Months After Epilepsy Surgery—Development and Application of Reliable Change Indices and Standardized Regression-Based Change Norms for a Neuropsychological Test Battery in the German Language

Nadine Conradi, Marion Behrens, Anke M. Hermsen, Tabitha Kannemann, Nina Merkel, Annika Schuster, Thomas M. Freiman, Adam Strzelczyk, Felix Rosenow
2020 Frontiers in Psychology  
Forty-seven consecutive patients with temporal lobe epilepsy underwent neuropsychological assessments, both before and 12 months after surgery.  ...  German language, facilitating the individual monitoring of improvement and decline in each patients' cognitive functioning and psychosocial situations after epilepsy surgery.  ...  NC, MB, AH, TK, NM, and ASc performed the neuropsychological assessments and contributed to the interpretation of the results. TF, ASt, and FR were involved in planning and supervised the work.  ... 
doi:10.3389/fpsyg.2020.582836 pmid:33178083 pmcid:PMC7593256 fatcat:thzlb2z77jewvbkb2ny4fjw22y

Structural Correlates of Functional Language Dominance: A Voxel-Based Morphometry Study

Andreas Jansen, Gianpiero Liuzzi, Michael Deppe, Martin Kanowski, Christian Ölschläger, Johannes M. Albers, Gottfried Schlaug, Stefan Knecht
2010 Journal of Neuroimaging  
BACKGROUND AND PURPOSE-The goal of this study was to explore the structural correlates of functional language dominance by directly comparing the brain morphology of healthy subjects with left-and right-hemisphere  ...  CONCLUSIONS-Our study does not support the still prevalent view that asymmetries of the PT are related in a direct way to functional language lateralization. The structural differences  ...  Acknowledgments This work was supported by the Innovative Medizinische Forschung Münster (JA110607), the Interdisciplinary Center of Clinical Research Münster (IZKF Projects FG2 and Kne3/074/04), and the  ... 
doi:10.1111/j.1552-6569.2009.00367.x pmid:19453831 pmcid:PMC4433474 fatcat:ziqke7gat5bnfc46h7yokq6ndq

Quantifying cerebral asymmetries for language in dextrals and adextrals with random-effects meta analysis

David P. Carey, Leah T. Johnstone
2014 Frontiers in Psychology  
Speech and language-related functions tend to depend on the left hemisphere more than the right in most right-handed (dextral) participants.  ...  Quantifying cerebral asymmetries for language in dextrals and adextrals with random-effects meta analysis. Front. Psychol. 5:1128.  ...  For example, Kim et al. (2001) claim a 15% incidence of left handedness in a sample of Korean epileptic patients with left temporal lobe epilepsy (TLE), compared to a control sample estimate of around  ... 
doi:10.3389/fpsyg.2014.01128 pmid:25408673 pmcid:PMC4219560 fatcat:u54qkbrrhfadvkvkg2glx7t5x4

Cerebral lateralisation of first and second languages in bilinguals assessed using functional transcranial Doppler ultrasound

Dorothy V. M. Bishop, Clara R. Grabitz, Sophie C. Harte, Kate E. Watkins, Miho Sasaki, Eva Gutierrez-Sigut, Mairéad MacSweeney, Zoe V. J. Woodhead, Heather Payne
2021 Wellcome Open Research  
Methods: In Study 1, we used functional transcranial Doppler sonography (FTCD) to measure cerebral lateralisation in both languages in high proficiency bilinguals who varied in age of acquisition (AoA)  ...  Results: In Study 1, participants were significantly left lateralised for both L1 and L2, with a high correlation (r = .70) in the size of laterality indices for L1 and L2.  ...  J., Bradshaw, A. R., Wilson, A. C., Thompson, P. A., & Bishop, D. V. M. (2019). Testing the unitary theory of language lateralization using functional transcranial Doppler sonography in adults.  ... 
doi:10.12688/wellcomeopenres.9869.2 pmid:34405116 pmcid:PMC8361806 fatcat:q5lchuejnzen3pyer3o6d2j7ni

20th Meeting of the European Society of Neurosonology and Cerebral Hemodynamics. Zadar, Croatia, May 7-11, 2015: Abstracts

2015 Cerebrovascular Diseases  
Transcranial Doppler (TCD) is the "doctor's stethoscope for the brain". It is a non-invasive, safe, and cost-effective bedside test for evaluating the cerebrovascular circulation.  ...  More critically, TCD is hampered by the 10-15% rate of inadequate temporal windows most commonly seen in elderly female patients.  ...  Last time the method of functional transcranial Doppler (fTCD) has been involved as an alternative way for traditionally used invasive methods (eх., WADA-test).  ... 
doi:10.1159/000430972 pmid:25967157 fatcat:4x5bua75kzgs7dghwrqremqs4e

Open multimodal iEEG-fMRI dataset from naturalistic stimulation with a short audiovisual film [article]

Julia Berezutskaya, Mariska J. Vansteensel, Erik J. Aarnoutse, Zachary V. Freudenburg, Giovanni Piantoni, Mariana P. Branco, Nick F. Ramsey
2021 bioRxiv   pre-print
This multimodal dataset can be used to address questions about neural mechanisms of multimodal perception and language comprehension as well as the nature of the neural signal acquired during the same  ...  Second, the intracranial data are accompanied by fMRI recordings acquired for the same task in 30 functional magnetic resonance imaging (fMRI) participants.  ...  technicians and staff of the clinical neurophysiology department and the patients for their time and effort; and the members of the UMC Utrecht ECoG research team for data collection.  ... 
doi:10.1101/2021.06.09.447733 fatcat:wrpcrn2zczdvjkqfqcogkewp6m

Foveal Word Reading Requires Interhemispheric Communication

Zoë R. Hunter, Marc Brysbaert, Stefan Knecht
2007 Journal of Cognitive Neuroscience  
We carried out two experiments in which we obtained laterality indices by means of functional imaging during a mental word-generation task, using functional transcranial Doppler sonography and functional  ...  It is shifted toward the end of a word for right language dominant individuals and, to a lesser extent, for individuals with bilateral language representation.  ...  Sehlmeyer for assistance with the Doppler sonography measurements. Reprint requests should be sent to Zoë R.  ... 
doi:10.1162/jocn.2007.19.8.1373 pmid:17651009 fatcat:tvtemerbinaypawbrwct4dg2ia

The ontogenesis of language lateralization and its relation to handedness

Sebastian Ocklenburg, Christian Beste, Larissa Arning, Jutta Peterburs, Onur Güntürkün
2014 Neuroscience and Biobehavioral Reviews  
Dominance of the left hemisphere for many aspects of speech production and perception is one of the best known examples of functional hemispheric asymmetries in the human brain.  ...  However, the strength of this correlation depends on the measures used to assess the two traits, and the neurophysiological basis of language lateralization is different from that of handedness.  ...  A major challenge for the assumption that handedness and language lateralization have the same ontogenetic base comes from fTCD (functional transcranial Doppler sonography) and fMRI (functional magnetic  ... 
doi:10.1016/j.neubiorev.2014.04.008 pmid:24769292 fatcat:hnow4k4d5vg5jgart47j26q6qm
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