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Ahtam B, Yun HJ, Vyas R, Pienaar R, Wilson JH, Goswami CP, Berto LF, Warfield SK, Sahin M, Grant PE, Peters JM, Im K. Morphological Features of Language Regions in Individuals with Tuberous Sclerosis Complex. J Autism Dev Disord 2024; 54:3155-3175. [PMID: 37222965 DOI: 10.1007/s10803-023-06004-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2023] [Indexed: 05/25/2023]
Abstract
A significant number of individuals with tuberous sclerosis complex (TSC) exhibit language difficulties. Here, we examined the language-related brain morphometry in 59 participants (7 participants with TSC and comorbid autism spectrum disorder (ASD) (TSC + ASD), 13 with TSC but no ASD (TSC-ASD), 10 with ASD-only (ASD), and 29 typically developing (TD) controls). A hemispheric asymmetry was noted in surface area and gray matter volume of several cortical language areas in TD, ASD, and TSC-ASD groups, but not in TSC + ASD group. TSC + ASD group demonstrated increased cortical thickness and curvature values in multiple language regions for both hemispheres, compared to other groups. After controlling for tuber load in the TSC groups, within-group differences stayed the same but the differences between TSC-ASD and TSC + ASD were no longer statistically significant. These preliminary findings suggest that comorbid ASD in TSC as well as tuber load in TSC is associated with changes in the morphometry of language regions. Future studies with larger sample sizes will be needed to confirm these findings.
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Affiliation(s)
- Banu Ahtam
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
| | - Hyuk Jin Yun
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Rutvi Vyas
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Rudolph Pienaar
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Josephine H Wilson
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Caroline P Goswami
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Laura F Berto
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Simon K Warfield
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Mustafa Sahin
- Rosamund Stone Zander Translational Neuroscience Center, Department of Neurology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Harvard University, Boston, MA, 02115, USA
| | - P Ellen Grant
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Neuroradiology, Department of Radiology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Jurriaan M Peters
- Division of Epilepsy and Clinical Neurophysiology, Department of Neurology, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
| | - Kiho Im
- Fetal-Neonatal Neuroimaging and Developmental Science Center, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA
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Ilves N, Männamaa M, Laugesaar R, Ilves N, Loorits D, Vaher U, Kool P, Ilves P. Language lateralization and outcome in perinatal stroke patients with different vascular types. BRAIN AND LANGUAGE 2022; 228:105108. [PMID: 35334446 DOI: 10.1016/j.bandl.2022.105108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 12/06/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Perinatal stroke affects child's language development and can change language lateralization. Language generation and comprehension tasks in functional magnetic resonance imaging were used to determine language lateralization in term born children with perinatal left-side arterial ischemic stroke (AIS) (n = 9, mean age (SD) 13.4 (3.1) y.) and periventricular venous infarction (PVI) (n = 12, 11.8 (2.8) y.), and in healthy right-handed controls (n = 30, 11.6 (2.6) y.). Lateralization index was calculated for the Broca and Wernicke areas and correlated with language and cognitive outcomes measured by the Kaufman Assessment Battery for Children II ed. Language outcome in children with perinatal stroke is poorer compared to healthy controls. Children with small AIS lesions and most children with PVI showed left-side language activation. Most children with large AIS lesions and one child with large PVI had language activation reorganized to the right hemisphere. Language reorganization to the unlesioned right hemisphere did not ensure normal language outcome.
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Affiliation(s)
- Nigul Ilves
- Radiology Clinic, Tartu University Hospital, Tartu, Estonia; Department of Radiology, University of Tartu, Tartu, Estonia.
| | - Mairi Männamaa
- Department of Pediatrics, University of Tartu, Tartu, Estonia; Children's Clinic, Tartu University Hospital, Tartu, Estonia
| | - Rael Laugesaar
- Department of Pediatrics, University of Tartu, Tartu, Estonia; Children's Clinic, Tartu University Hospital, Tartu, Estonia
| | - Norman Ilves
- Radiology Clinic, Tartu University Hospital, Tartu, Estonia; Department of Radiology, University of Tartu, Tartu, Estonia
| | - Dagmar Loorits
- Department of Radiology, University of Tartu, Tartu, Estonia
| | - Ulvi Vaher
- Department of Radiology, University of Tartu, Tartu, Estonia; Department of Pediatrics, University of Tartu, Tartu, Estonia; Children's Clinic, Tartu University Hospital, Tartu, Estonia
| | - Pille Kool
- Department of Radiology, University of Tartu, Tartu, Estonia
| | - Pilvi Ilves
- Radiology Clinic, Tartu University Hospital, Tartu, Estonia; Department of Radiology, University of Tartu, Tartu, Estonia
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Clinical Speech fMRI in Children and Adolescents : Development of an Optimal Protocol and Analysis Algorithm. Clin Neuroradiol 2021; 32:185-196. [PMID: 34613421 PMCID: PMC8894226 DOI: 10.1007/s00062-021-01097-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 08/31/2021] [Indexed: 11/28/2022]
Abstract
Purpose In patients with drug-resistant focal epilepsy, surgical resection is often the only treatment option to achieve long-term seizure control. Prior to brain surgery involving potential language areas, identification of hemispheric language dominance is crucial. Our group developed and validated a functional magnetic resonance imaging (fMRI) battery of four pediatric language tasks. The present study aimed at optimizing fMRI data acquisition and analysis using these tasks. Methods We retrospectively analyzed speech fMRI examinations of 114 neuropediatric patients (age range 5.8–17.8 years) who were examined prior to possible epilepsy surgery. In order to evaluate hemispheric language dominance, 1–4 language tasks (vowel identification task VIT, word-chain task WCT, beep-story task BST, synonym task SYT) were measured. Results Language dominance was classified using fMRI activation in the 13 validly lateralizing ROIs (VLR) in frontal, temporal and parietal lobes and cerebellum of the recent validation study from our group: 47/114 patients were classified as left-dominant, 34/114 as bilateral and 6/114 as right-dominant. In an attempt to enlarge the set of VLR, we then compared for each task agreement of these ROI activations with the classified language dominance. We found four additional task-specific ROIs showing concordant activation and activation in ≥ 10 sessions, which we termed validly lateralizing (VLRnew). The new VLRs were: for VIT the temporal language area and for SYT the middle frontal gyrus, the intraparietal sulcus and cerebellum. Finally, in order to find the optimal sequence of measuring the different tasks, we analyzed the success rates of single tasks and all possible task combinations. The sequence 1) VIT 2) WCT 3) BST 4) SYT was identified as the optimal sequence, yielding the highest chance to obtain reliable results even when the fMRI examination has to be stopped, e.g., due to lack of cooperation. Conclusion Our suggested task order together with the enlarged set of VLRnew may contribute to optimize pediatric speech fMRI in a clinical setting. Supplementary Information The online version of this article (10.1007/s00062-021-01097-z) contains supplementary material, which is available to authorized users.
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Gurunandan K, Arnaez-Telleria J, Carreiras M, Paz-Alonso PM. Converging Evidence for Differential Specialization and Plasticity of Language Systems. J Neurosci 2020. [PMID: 33168623 DOI: 10.1523/jneur0sci.0851-20.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023] Open
Abstract
Functional specialization and plasticity are fundamental organizing principles of the brain. Since the mid-1800s, certain cognitive functions have been known to be lateralized, but the provenance and flexibility of hemispheric specialization remain open questions. Language is a uniquely human phenomenon that requires a delicate balance between neural specialization and plasticity, and language learning offers the perfect window to study these principles in the human brain. In the current study, we conducted two separate functional MRI experiments with language learners (male and female), one cross-sectional and one longitudinal, involving distinct populations and languages, and examined hemispheric lateralization and learning-dependent plasticity of the following three language systems: reading, speech comprehension, and verbal production. A multipronged analytic approach revealed a highly consistent pattern of results across the two experiments, showing (1) that in both native and non-native languages, while language production was left lateralized, lateralization for language comprehension was highly variable across individuals; and (2) that with increasing non-native language proficiency, reading and speech comprehension displayed substantial changes in hemispheric dominance, with languages tending to lateralize to opposite hemispheres, while production showed negligible change and remained left lateralized. These convergent results shed light on the long-standing debate of neural organization of language by establishing robust principles of lateralization and plasticity of the main language systems. Findings further suggest involvement of the sensorimotor systems in language lateralization and its plasticity.SIGNIFICANCE STATEMENT The human brain exhibits a remarkable ability to support a vast variety of languages that may be acquired at different points in the life span. Language is a complex construct involving linguistic as well as visual, auditory, and motor processes. Using functional MRI, we examined hemispheric specialization and learning-dependent plasticity of three language systems-reading, speech comprehension, and verbal production-in cross-sectional and longitudinal experiments in language learners. A multipronged analytic approach revealed converging evidence for striking differences in hemispheric specialization and plasticity among the language systems. The results have major theoretical and practical implications for our understanding of fundamental principles of neural organization of language, language testing and recovery in patients, and language learning in healthy populations.
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Affiliation(s)
- Kshipra Gurunandan
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
| | - Jaione Arnaez-Telleria
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
| | - Manuel Carreiras
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
- Basque Foundation for Science, 48013 Bilbao, Spain
- Department of Basque Language and Communication, University of the Basque Country, 48015 Bilbao, Spain
| | - Pedro M Paz-Alonso
- BCBL. Basque Center on Cognition, Brain and Language, 20009 Donostia-San Sebastian, Spain
- Basque Foundation for Science, 48013 Bilbao, Spain
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5
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Converging Evidence for Differential Specialization and Plasticity of Language Systems. J Neurosci 2020; 40:9715-9724. [PMID: 33168623 PMCID: PMC7726546 DOI: 10.1523/jneurosci.0851-20.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 11/23/2022] Open
Abstract
Functional specialization and plasticity are fundamental organizing principles of the brain. Since the mid-1800s, certain cognitive functions have been known to be lateralized, but the provenance and flexibility of hemispheric specialization remain open questions. Language is a uniquely human phenomenon that requires a delicate balance between neural specialization and plasticity, and language learning offers the perfect window to study these principles in the human brain. In the current study, we conducted two separate functional MRI experiments with language learners (male and female), one cross-sectional and one longitudinal, involving distinct populations and languages, and examined hemispheric lateralization and learning-dependent plasticity of the following three language systems: reading, speech comprehension, and verbal production. A multipronged analytic approach revealed a highly consistent pattern of results across the two experiments, showing (1) that in both native and non-native languages, while language production was left lateralized, lateralization for language comprehension was highly variable across individuals; and (2) that with increasing non-native language proficiency, reading and speech comprehension displayed substantial changes in hemispheric dominance, with languages tending to lateralize to opposite hemispheres, while production showed negligible change and remained left lateralized. These convergent results shed light on the long-standing debate of neural organization of language by establishing robust principles of lateralization and plasticity of the main language systems. Findings further suggest involvement of the sensorimotor systems in language lateralization and its plasticity. SIGNIFICANCE STATEMENT The human brain exhibits a remarkable ability to support a vast variety of languages that may be acquired at different points in the life span. Language is a complex construct involving linguistic as well as visual, auditory, and motor processes. Using functional MRI, we examined hemispheric specialization and learning-dependent plasticity of three language systems—reading, speech comprehension, and verbal production—in cross-sectional and longitudinal experiments in language learners. A multipronged analytic approach revealed converging evidence for striking differences in hemispheric specialization and plasticity among the language systems. The results have major theoretical and practical implications for our understanding of fundamental principles of neural organization of language, language testing and recovery in patients, and language learning in healthy populations.
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Assessing motor, visual and language function using a single 5-minute fMRI paradigm: three birds with one stone. Brain Imaging Behav 2019; 12:1775-1785. [PMID: 29480439 DOI: 10.1007/s11682-018-9848-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Clinical functional Magnetic Resonance Imaging (fMRI) requires inferences on localization of major brain functions at the individual subject level. We hypothesized that a single "triple use" task would satisfy sensitivity and reliability requirements for successfully assessing the motor, visual and language domain in this context. This was tested here by the application in a group of healthy adults, assessing sensitivity and reliability at the individual subject level, separately for each domain.Our "triple use" task consisted of 2 conditions (condition 1, assessing motor and visual domain, and condition 2, assessing the language domain), serving mutually as active/control. We included 20 healthy adult subjects. Random effect analyses showed activation in primary motor, visual and language regions, as expected. Less expected regions were activated both for the motor and visual domains. Further, reliability of primary activation patterns was very high across individual subjects, with activation seen in 70-100% of subjects in primary motor, visual, and left-lateralized language regions.These findings suggest the "triple use" task to be reliable at the individual subject's level to assess motor, visual and language domains in the clinical fMRI context. Benefits of such an approach include shortening of acquisition time, simplicity of the task for each domain, and using a visual stimulus. Following establishment of reliability in adults, the task may also be a valuable addition in the pediatric clinical fMRI context, where each of these factors is of high relevance.
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Desai VR, Vedantam A, Lam SK, Mirea L, Foldes ST, Curry DJ, Adelson PD, Wilfong AA, Boerwinkle VL. Language lateralization with resting-state and task-based functional MRI in pediatric epilepsy. J Neurosurg Pediatr 2019; 23:171-177. [PMID: 30485177 DOI: 10.3171/2018.7.peds18162] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/24/2018] [Indexed: 11/06/2022]
Abstract
In Brief: The study compared two types of functional MRI (fMRI) to see which side of the brain is most responsible for language: traditional task-based fMRI, which requires a high level of patient interaction, and resting-state fMRI, which is typically performed with the patient under light sedation and has no interaction requirement. The authors found that the test correlation was 93%, indicating resting state fMRI has potential to locate language in those unable to participate in task-based fMRI.
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Affiliation(s)
- Virendra R Desai
- Division of Pediatric Neurosurgery, Texas Children's Hospital/Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Aditya Vedantam
- Division of Pediatric Neurosurgery, Texas Children's Hospital/Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Sandi K Lam
- Division of Pediatric Neurosurgery, Texas Children's Hospital/Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - Lucia Mirea
- Department of Research, Phoenix Children's Hospital, Phoenix, Arizona
| | | | - Daniel J Curry
- Division of Pediatric Neurosurgery, Texas Children's Hospital/Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
| | - P David Adelson
- Division of Pediatric Neurosurgery, and
- Division of Pediatric Neurology, Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona
| | - Angus A Wilfong
- Division of Pediatric Neurology, Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona
| | - Varina L Boerwinkle
- Division of Pediatric Neurology, Barrow Neurological Institute at Phoenix Children's Hospital, Phoenix, Arizona
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Alemi R, Batouli SAH, Behzad E, Ebrahimpoor M, Oghabian MA. Not single brain areas but a network is involved in language: Applications in presurgical planning. Clin Neurol Neurosurg 2018; 165:116-128. [PMID: 29334640 DOI: 10.1016/j.clineuro.2018.01.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/03/2018] [Accepted: 01/08/2018] [Indexed: 01/22/2023]
Abstract
OBJECTIVES Language is an important human function, and is a determinant of the quality of life. In conditions such as brain lesions, disruption of the language function may occur, and lesion resection is a solution for that. Presurgical planning to determine the language-related brain areas would enhance the chances of language preservation after the operation; however, availability of a normative language template is essential. PATIENTS AND METHODS In this study, using data from 60 young individuals who were meticulously checked for mental and physical health, and using fMRI and robust imaging and data analysis methods, functional brain maps for the language production, perception and semantic were produced. RESULTS The obtained templates showed that the language function should be considered as the product of the collaboration of a network of brain regions, instead of considering only few brain areas to be involved in that. CONCLUSION This study has important clinical applications, and extends our knowledge on the neuroanatomy of the language function.
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Affiliation(s)
- Razieh Alemi
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Department of Otorhinolaryngology, Faculty of Medicine, McGill University, Canada
| | - Seyed Amir Hossein Batouli
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran; Neuroimaging and Analysis Group, Tehran University of Medical Sciences, Tehran, Iran
| | - Ebrahim Behzad
- Department of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mitra Ebrahimpoor
- Neuroimaging and Analysis Group, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Oghabian
- Neuroimaging and Analysis Group, Tehran University of Medical Sciences, Tehran, Iran; Medical Physics and Biomedical Engineering Department, Tehran University of Medical Sciences, Tehran, Iran.
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Lidzba K, de Haan B, Wilke M, Krägeloh-Mann I, Staudt M. Lesion characteristics driving right-hemispheric language reorganization in congenital left-hemispheric brain damage. BRAIN AND LANGUAGE 2017; 173:1-9. [PMID: 28549234 DOI: 10.1016/j.bandl.2017.04.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 04/19/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
Pre- or perinatally acquired ("congenital") left-hemispheric brain lesions can be compensated for by reorganizing language into homotopic brain regions in the right hemisphere. Language comprehension may be hemispherically dissociated from language production. We investigated the lesion characteristics driving inter-hemispheric reorganization of language comprehension and language production in 19 patients (7-32years; eight females) with congenital left-hemispheric brain lesions (periventricular lesions [n=11] and middle cerebral artery infarctions [n=8]) by fMRI. 16/17 patients demonstrated reorganized language production, while 7/19 patients had reorganized language comprehension. Lesions to the insular cortex and the temporo-parietal junction (predominantly supramarginal gyrus) were significantly more common in patients in whom both, language production and comprehension were reorganized. These areas belong to the dorsal stream of the language network, participating in the auditory-motor integration of language. Our data suggest that the integrity of this stream might be crucial for a normal left-lateralized language development.
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Affiliation(s)
- Karen Lidzba
- University Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, University of Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany; Experimental Pediatric Neuroimaging Group, Department of Pediatric Neurology and Developmental Medicine & Department of Neuroradiology, University Hospital Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany.
| | - Bianca de Haan
- Center of Neurology, Division of Neuropsychology, Hertie-Institute of Clinical Brain Research, University of Tübingen, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany
| | - Marko Wilke
- University Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, University of Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany; Experimental Pediatric Neuroimaging Group, Department of Pediatric Neurology and Developmental Medicine & Department of Neuroradiology, University Hospital Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Ingeborg Krägeloh-Mann
- University Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, University of Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany
| | - Martin Staudt
- University Children's Hospital, Department of Pediatric Neurology and Developmental Medicine, University of Tübingen, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany; Clinic for Neuropediatrics and Neurorehabilitation, Epilepsy Centre for Children and Adolescents, Schön Klinik Vogtareuth, Krankenhausstr. 20, 83569 Vogtareuth, Germany
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Prieur J, Pika S, Barbu S, Blois-Heulin C. Intraspecific gestural laterality in chimpanzees and gorillas and the impact of social propensities. Brain Res 2017; 1670:52-67. [DOI: 10.1016/j.brainres.2017.05.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/04/2017] [Accepted: 05/31/2017] [Indexed: 12/29/2022]
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Máté A, Lidzba K, Hauser TK, Staudt M, Wilke M. A "one size fits all" approach to language fMRI: increasing specificity and applicability by adding a self-paced component. Exp Brain Res 2015; 234:673-84. [PMID: 26514810 DOI: 10.1007/s00221-015-4473-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 10/10/2015] [Indexed: 11/28/2022]
Abstract
We have previously established an fMRI task battery suitable for mapping the language processing network in children. Among the tasks used, the synonyms and the vowel identification task induced robust task-related activations in children with average language abilities; however, the fixed presentation time seems to be a drawback in participants with above- or below-average language abilities. This feasibility study in healthy adults (n = 20) was aimed at adapting these tasks to the individual level of each patient by implementing a self-paced stimulus presentation. The impact of using a block- versus an event-related statistical approach was also evaluated. The self-paced modification allowed our participants with above-average language abilities to process stimuli much faster than originally implemented, likely increasing task adherence. A higher specificity of the event-related analysis was confirmed by stronger left inferior frontal and crossed cerebellar activations. We suggest that self-paced paradigms and event-related analyses may both increase specificity and applicability.
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Affiliation(s)
- Adrienn Máté
- Department of Neurosurgery, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Department of Pediatric Neurology and Developmental Medicine, Children's Hospital, Hoppe-Seyler-Str. 1, 72076, Tübingen, Germany.,Experimental Pediatric Neuroimaging Group, Pediatric Neurology and Department of Neuroradiology, University Hospital, Tübingen, Germany
| | - Karen Lidzba
- Department of Pediatric Neurology and Developmental Medicine, Children's Hospital, Hoppe-Seyler-Str. 1, 72076, Tübingen, Germany.,Experimental Pediatric Neuroimaging Group, Pediatric Neurology and Department of Neuroradiology, University Hospital, Tübingen, Germany
| | | | - Martin Staudt
- Department of Pediatric Neurology and Developmental Medicine, Children's Hospital, Hoppe-Seyler-Str. 1, 72076, Tübingen, Germany.,Clinic for Neuropediatrics and Neurorehabilitation, Epilepsy Center for Children and Adolescents, Schön Klinik, Vogtareuth, Germany
| | - Marko Wilke
- Department of Pediatric Neurology and Developmental Medicine, Children's Hospital, Hoppe-Seyler-Str. 1, 72076, Tübingen, Germany. .,Experimental Pediatric Neuroimaging Group, Pediatric Neurology and Department of Neuroradiology, University Hospital, Tübingen, Germany.
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12
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Abstract
Surgical techniques have emerged as a viable therapeutic option in patients with drug refractory epilepsy. Pre-surgical evaluation of epilepsy requires a comprehensive, multiparametric, and multimodal approach for precise localization of the epileptogenic focus. Various non-invasive techniques are available at the disposal of the treating physician to detect the epileptogenic focus, which include electroencephalography (EEG), video-EEG, magnetic resonance imaging (MRI), functional MRI including blood oxygen level dependent (BOLD) techniques, single photon emission tomography (SPECT), and 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET). Currently, non-invasive high-resolution MR imaging techniques play pivotal roles in the preoperative detection of the seizure focus, and represent the foundation for successful epilepsy surgery. BOLD functional magnetic resonance imaging (fMRI) maps allow for precise localization of the eloquent cortex in relation to the seizure focus. This review article focuses on the clinical utility of BOLD (fMRI) in the pre-surgical work-up of epilepsy patients.
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Affiliation(s)
- Karthik Ganesan
- Department of 3T fMRI, SRL Diagnostics and Jankharia Imaging, Mumbai, Maharashtra, India
| | - Meher Ursekar
- Department of 3T fMRI, SRL Diagnostics and Jankharia Imaging, Mumbai, Maharashtra, India
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Lidzba K, Konietzko A, Schwilling E, Krägeloh-Mann I, Winkler S. Processing of non-canonical word-order: a case-series on lesion-induced reorganized language and age-effects in typical development. BRAIN AND LANGUAGE 2013; 127:377-387. [PMID: 24267487 DOI: 10.1016/j.bandl.2013.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/07/2013] [Accepted: 10/19/2013] [Indexed: 06/02/2023]
Abstract
Complex grammatical structures are mastered late in language acquisition. We studied age-effects on performance in object topicalization in 48 typically developing German-speaking participants (aged 8-30years) and in five patients (children and adolescents) with lesion-induced atypical language representation. Production was tested by a sentence repetition task, comprehension by an acting out task. Three topicalized conditions with differing disambiguation (agreement, case, and case plus agreement) were contrasted with canonical control sentences. Children's (aged 8-13years) performance was significantly below that of adolescents and adults in all topicalized conditions. All participants made most mistakes in the agreement condition. Patients showed remarkable difficulties as compared with age-appropriate control groups in all topicalization conditions and across age-groups. Despite the small sample size, the consistency of these difficulties might hint to the importance of an intact typical neural language substrate for processing complex grammatical structures even in very early brain lesions.
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Affiliation(s)
- Karen Lidzba
- University of Tübingen, Collaborative Research Center 833, Nauklerstr. 35, 72074 Tübingen, Germany; University Children's Hospital, Dept. Pediatric Neurology, Hoppe-Seyler-Str. 1, 72076 Tübingen, Germany.
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Language mapping in temporal lobe epilepsy in children: special considerations. EPILEPSY RESEARCH AND TREATMENT 2012; 2012:837036. [PMID: 22957246 PMCID: PMC3420711 DOI: 10.1155/2012/837036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 11/06/2011] [Indexed: 02/01/2023]
Abstract
Temporal lobe epilepsy (TLE) in children is a slightly different entity than TLE in adults not only because of its semiology and pathology but also because of the different approach to surgical treatment. Presurgical investigations for eloquent cortex, especially language, must take these differences into account. Most diagnostic tests were created for adults, and many of the assessment tools need to be adapted for children because they are not just small adults. This paper will highlight the specific challenges and solutions in mapping language in a pediatric population with TLE.
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Lidzba K, Schwilling E, Grodd W, Krägeloh-Mann I, Wilke M. Language comprehension vs. language production: age effects on fMRI activation. BRAIN AND LANGUAGE 2011; 119:6-15. [PMID: 21450336 DOI: 10.1016/j.bandl.2011.02.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2010] [Revised: 02/09/2011] [Accepted: 02/12/2011] [Indexed: 05/26/2023]
Abstract
Normal language acquisition is a process that unfolds with amazing speed primarily in the first years of life. However, the refinement of linguistic proficiency is an ongoing process, extending well into childhood and adolescence. An increase in lateralization and a more focussed productive language network have been suggested to be the neural correlates of this process. However, the processes underlying the refinement of language comprehension are less clear. Using a language comprehension (Beep Stories) and a language production (Vowel Identification) task in fMRI, we studied language representation and lateralization in 36 children, adolescents, and young adults (age 6-24 years). For the language comprehension network, we found a more focal activation with age in the bilateral superior temporal gyri. No significant increase of lateralization with age could be observed, so the neural basis of language comprehension as assessed with the Beep Stories task seems to be established in a bilateral network by late childhood. For the productive network, however, we could confirm an increase with age both in focus and lateralization. Only in the language comprehension task did verbal IQ correlate with lateralization, with higher verbal IQ being associated with more right-hemispheric involvement. In some subjects (24%), language comprehension and language production were lateralized to opposite hemispheres.
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Affiliation(s)
- Karen Lidzba
- Pediatric Neurology & Developmental Medicine, Tübingen, Germany.
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The effect of fMRI task combinations on determining the hemispheric dominance of language functions. Neuroradiology 2011; 54:393-405. [PMID: 21932015 PMCID: PMC3304062 DOI: 10.1007/s00234-011-0959-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2011] [Accepted: 09/07/2011] [Indexed: 11/15/2022]
Abstract
Introduction The purpose of this study is to establish the most suitable combination of functional magnetic resonance imaging (fMRI) language tasks for clinical use in determining language dominance and to define the variability in laterality index (LI) and activation power between different combinations of language tasks. Methods Activation patterns of different fMRI analyses of five language tasks (word generation, responsive naming, letter task, sentence comprehension, and word pair) were defined for 20 healthy volunteers (16 right-handed). LIs and sums of T values were calculated for each task separately and for four combinations of tasks in predefined regions of interest. Variability in terms of activation power and lateralization was defined in each analysis. In addition, the visual assessment of lateralization of language functions based on the individual fMRI activation maps was conducted by an experienced neuroradiologist. Results A combination analysis of word generation, responsive naming, and sentence comprehension was the most suitable in terms of activation power, robustness to detect essential language areas, and scanning time. In general, combination analyses of the tasks provided higher overall activation levels than single tasks and reduced the number of outlier voxels disturbing the calculation of LI. Conclusions A combination of auditory and visually presented tasks that activate different aspects of language functions with sufficient activation power may be a useful task battery for determining language dominance in patients.
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Ebner K, Lidzba K, Hauser TK, Wilke M. Assessing language and visuospatial functions with one task: a "dual use" approach to performing fMRI in children. Neuroimage 2011; 58:923-9. [PMID: 21726649 DOI: 10.1016/j.neuroimage.2011.06.048] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 06/09/2011] [Accepted: 06/16/2011] [Indexed: 12/30/2022] Open
Abstract
In order to increase the rate of successful functional MR studies in children it is helpful to shorten the time spent in the scanner. To this effect, assessing two cognitive functions with one task seems to be a promising approach. The hypothesis of this study was that the control condition of an established language task (vowel identification task, VIT) requires visuospatial processing and that the control condition (VIT(CC)) therefore may also be applicable to localize visuospatial functions. As a reference task, a visual search task (VST, previously established for use in children) was employed. To test this hypothesis, 43 children (19 f, 24 m; 12.0±2.6, range 7.9 to 17.8 years) were recruited and scanned using both tasks. Second-level random effects group analyses showed activation of left inferior-frontal cortex in the active condition of the VIT, as in previous studies. Additionally, analysis of the VIT(CC) demonstrated activation in right-dominant superior parietal and high-frontal brain regions, classically associated with visuospatial functions; activation seen in the VST was similar with a substantial overlap. However, lateralization in the parietal lobe was significantly more bilateral in the VST than in the VIT(CC). This suggests that the VIT can not only be applied to assess language functions (using the active>control contrast), but also that the control>active condition is useful for assessing visuospatial functions. Future task design may benefit from such a "dual use" approach to performing fMRI not only, but also particularly in children.
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Affiliation(s)
- Kathina Ebner
- Pediatric Neurology & Developmental Medicine and Experimental Pediatric Neuroimaging, Children's Hospital University of Tübingen, Tübingen, Germany
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