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Krámská L, Šroubek J, Česák T, Vojtěch Z. One-year neuropsychological outcome after temporal lobe epilepsy surgery in large Czech sample: Search for factors contributing to memory decline. Surg Neurol Int 2022; 13:248. [PMID: 35855171 PMCID: PMC9282793 DOI: 10.25259/sni_335_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/20/2022] [Indexed: 11/05/2022] Open
Abstract
Background: Assessment of cognitive functions is an integral part of the evaluation the efficacy of temporal resections. We studied postoperative neuropsychological changes and factors contributing to worse memory outcomes in patients who experienced a significant decline using reliable change indices. Methods: We prospectively studied 110 patients in whom we indicated anteromesial temporal resection (AMTR) and 46 patients who underwent selective amygdalohippocampectomy (SAHE). We administrated Wechsler Adult Intelligence Scale-Revised, Wechsler Memory Scale-Revised, and the Verbal Fluency Test before and 1 year after the operation. Results: At a group level, we did not observe any statistically significant changes in global, verbal, and visual MQ in either the AMTR or the SAHE group. At an individual level, we found a mean decrease of verbal MQ after left-sided AMTR by −4.43 points (P = 0.01). We detected no significant differences between the left and right side of surgery in the SAHE group. In patients with significant postoperative memory decline, we found either pre-existing extrahippocampal deficits/postoperative complications or incomplete hippocampal resection or a combination of these factors. Conclusion: In addition to the side of surgery, structural integrity and functional adequacy of resected hippocampus and volume of resected tissue and preoperative extrahippocampal lesions/postoperative complications also contribute to postoperative memory decline after temporal lobe epilepsy surgery.
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Affiliation(s)
- Lenka Krámská
- Department of Clinical Psychology, Na Homolce Hospital, Prague, Czech Republic
- Department of Neurology, Epilepsy Center, Na Homolce Hospital, Prague, Czech Republic
| | - Jan Šroubek
- Department of Neurosurgery, Na Homolce Hospital, Prague, Czech Republic
- Department of Neurosurgery, University Hospital, Hradec Kralove, Czech Republic
| | - Tomáš Česák
- Department of Neurosurgery, University Hospital, Hradec Kralove, Czech Republic
| | - Zdeněk Vojtěch
- Department of Neurology, Epilepsy Center, Na Homolce Hospital, Prague, Czech Republic
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Sacco K, Ronga I, Perna P, Cicerale A, Del Fante E, Sarasso P, Geminiani GC. A Virtual Navigation Training Promotes the Remapping of Space in Allocentric Coordinates: Evidence From Behavioral and Neuroimaging Data. Front Hum Neurosci 2022; 16:693968. [PMID: 35479185 PMCID: PMC9037151 DOI: 10.3389/fnhum.2022.693968] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 03/02/2022] [Indexed: 11/13/2022] Open
Abstract
Allocentric space representations demonstrated to be crucial to improve visuo-spatial skills, pivotal in every-day life activities and for the development and maintenance of other cognitive abilities, such as memory and reasoning. Here, we present a series of three different experiments: Experiment 1, Discovery sample (23 young male participants); Experiment 2, Neuroimaging and replicating sample (23 young male participants); and Experiment 3 (14 young male participants). In the experiments, we investigated whether virtual navigation stimulates the ability to form spatial allocentric representations. With this aim, we used a novel 3D videogame (MindTheCity!), focused on the navigation of a virtual town. We verified whether playing at MindTheCity! enhanced the performance on spatial representational tasks (pointing to a specific location in space) and on a spatial memory test (asking participant to remember the location of specific objects). Furthermore, to uncover the neural mechanisms underlying the observed effects, we performed a preliminary fMRI investigation before and after the training with MindTheCity!. Results show that our virtual training enhances the ability to form allocentric representations and spatial memory (Experiment 1). Experiments 2 and 3 confirmed the behavioral results of Experiment 1. Furthermore, our preliminary neuroimaging and behavioral results suggest that the training activates brain circuits involved in higher-order mechanisms of information encoding, triggering the activation of broader cognitive processes and reducing the working load on memory circuits (Experiments 2 and 3).
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Stasenko A, Kaestner E, Reyes A, Lalani SJ, Paul B, Hegde M, Helm JL, Ben-Haim S, McDonald CR. Association Between Microstructural Asymmetry of Temporal Lobe White Matter and Memory Decline After Anterior Temporal Lobectomy. Neurology 2022; 98:e1151-e1162. [PMID: 35058338 PMCID: PMC8935440 DOI: 10.1212/wnl.0000000000200047] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 01/03/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Risk for memory decline is a substantial concern in patients with temporal lobe epilepsy (TLE) undergoing anterior temporal lobectomy (ATL). Although prior studies have identified associations between memory and integrity of white matter (WM) networks within the medial temporal lobe (MTL) preoperatively, we contribute a study examining whether microstructural asymmetry of deep and superficial WM networks within the MTL predicts postoperative memory decline. METHODS Patients with drug-resistant TLE were recruited from 2 epilepsy centers in a prospective longitudinal study. All patients completed preoperative T1 and diffusion-weighted MRI (DWI) as well as preoperative and postoperative neuropsychological testing. Preoperative fractional anisotropy (FA) of the WM directly beneath the neocortex (i.e., superficial WM [SWM]) and of deep WM tracts associated with memory were calculated. Asymmetry was calculated for hippocampal volume and FA of each WM tract or region and examined in linear and logistic regressions with preoperative to postoperative memory change as the primary outcome. RESULTS Data were analyzed from 42 patients with TLE (19 left TLE [LTLE], 23 right TLE [RTLE]) who underwent ATL. Leftward FA asymmetry of the entorhinal SWM was associated with decline on prose and associative recall in LTLE, whereas leftward FA asymmetry of the uncinate fasciculus (UNC) was associated with decline on prose recall only. After controlling for preoperative memory score and hippocampal volume, leftward FA asymmetry of the entorhinal SWM uniquely contributed to decline in both prose and associative recall (β = -0.46; SE 0.14 and β = -0.68; SE 0.22, respectively) and leftward FA asymmetry of the UNC uniquely contributed to decline in prose recall (β = -0.31; SE 0.14). A model combining asymmetry of hippocampal volume and entorhinal FA correctly classified memory outcomes in 79% of patients with LTLE for prose (area under the curve [AUC] 0.89; sensitivity 82%; specificity 75%) and 81% of patients for associative (AUC 0.79; sensitivity 83%; specificity 80%) recall. Entorhinal SWM asymmetry was the strongest predictor in both models. DISCUSSION Preoperative asymmetry of deep WM and SWM integrity within the MTL is a strong predictor of postoperative memory decline in TLE, suggesting that surgical decision-making may benefit from considering each patient's WM network adequacy and reserve in addition to hippocampal integrity. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that preoperative asymmetry of deep WM and SWM integrity within the MTL is a predictor of postoperative memory decline.
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Affiliation(s)
- Alena Stasenko
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Erik Kaestner
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Anny Reyes
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Sanam J Lalani
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Brianna Paul
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Manu Hegde
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Jonathan L Helm
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Sharona Ben-Haim
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA
| | - Carrie R McDonald
- From the Center for Multimodal Imaging and Genetics (A.S., E.K., A.R., C.R.M.) and Departments of Psychiatry (A.S., E.K., A.R., S.J.L., C.R.M.) and Neurosurgery (S.B.-H.), University of California, San Diego; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology (A.R., C.R.M.); Department of Neurology (B.P., M.H.), University of California, San Francisco; and Department of Psychology (J.L.H.), San Diego State University, CA.
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Maiman M, Del Bene VA, Farrell E, MacAllister WS, Sheldon S, Rentería MA, Slugh M, Gazzola DM, Barr WB. The Utility of the Repeatable Battery of Neuropsychological Status in Patients with Temporal and Non-temporal Lobe Epilepsy. Arch Clin Neuropsychol 2021; 36:203-213. [PMID: 31761928 DOI: 10.1093/arclin/acz056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/05/2019] [Accepted: 09/10/2019] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) is a brief neuropsychological battery that has been validated in the assessment of dementia and other clinical populations. The current study examines the utility of the RBANS in patients with epilepsy. METHODS Ninety-eight patients with epilepsy completed the RBANS as part of a more comprehensive neuropsychological evaluation. Performance on the RBANS was evaluated for patients with a diagnosis of temporal lobe epilepsy (TLE; n = 51) and other epilepsy patients (non-TLE, n = 47) in comparison to published norms. Multivariate analysis of variance compared group performances on RBANS indices. Rates of impairment were also compared across groups using cutoff scores of ≤1.0 and ≤1.5 standard deviations below the normative mean. Exploratory hierarchical regressions were used to examine the relations between epilepsy severity factors (i.e., age of onset, disease duration, and number of antiepileptic drugs [AEDs]) and RBANS performance. RESULTS TLE and non-TLE patients performed below the normative sample across all RBANS indices. Those with TLE performed worse than non-TLE patients on the Immediate and Delayed Memory indices and exhibited higher rates of general cognitive impairment. Number of AEDs was the only epilepsy severity factor that significantly predicted RBANS total performance, accounting for 14% of the variance. CONCLUSIONS These findings suggest that the RBANS has utility in evaluating cognition in patients with epilepsy and can differentiate TLE and non-TLE patients. Additionally, number of AEDs appears to be associated with global cognitive performance in adults with epilepsy.
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Affiliation(s)
- Moshe Maiman
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Department of Psychology, Drexel University, Philadelphia, PA 19104, USA
| | - Victor A Del Bene
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Eileen Farrell
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Institute of Neurology and Neurosurgery, Saint Barnabas Hospital, Livingston, NJ 07039, USA
| | - William S MacAllister
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Alberta Children's Hospital Research Institute, Calgary, Alberta, Canada
| | - Sloane Sheldon
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Department of Neurology, Columbia University Medical Center, New York, NY 10034, USA
| | - Miguel Arce Rentería
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,Department of Neurology and Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University College of Physicians and Surgeons, New York, NY 10034, USA
| | - Mitchell Slugh
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA.,University of Miami, The Evelyn F. McKnight Brain Institute, Miami, FL 33136, USA
| | - Deana M Gazzola
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA
| | - William B Barr
- NYU-Langone Comprehensive Epilepsy Center, Department of Neurology, NYU School of Medicine, New York, NY 10016, USA
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Kim D, Kim JS, Jeong W, Shin MS, Chung CK. Critical area for memory decline after mesial temporal resection in epilepsy patients. J Neurosurg 2021; 134:659-677. [PMID: 31899884 DOI: 10.3171/2019.10.jns191932] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 10/25/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Mesial temporal lobe epilepsy (MTLE) surgery is associated with a risk of memory decline after surgery, but the effect of the extent and locus of temporal resection on postoperative memory function are controversial. The authors' aim in this study was to confirm if selective resection is effective in preserving memory function and identify critical areas for specific memory decline after temporal resection. METHODS In this single-center retrospective study, the authors investigated data from patients who underwent unilateral MTLE surgery between 2005 and 2015. Data from 74 MTLE patients (60.8% of whom were female; mean [SD] age at surgery 32 years [8.91 years] and duration of epilepsy 16 years [9.65 years]) with histologically proven hippocampal sclerosis were included. Forty-two patients underwent left-sided surgery. The resection area was manually delineated on each patient's postoperative T1-weighted images. Mapping was performed to see if the resected group, compared with the nonresected group, had worse postoperative memory in various memory domains, including verbal item, verbal associative, and figural memory. RESULTS Overall, 95.9% had a favorable epilepsy outcome. In verbal item memory, resection of the left lateral temporal area was related to postoperative decline in immediate and delayed recall scores of word lists. In verbal associative memory, resection of the anterior part of the left hippocampus, left parahippocampal area, and left lateral temporal area was related to postoperative decline in immediate recall scores of word pairs. Resection of the posterior part of the left hippocampus, left parahippocampal area, and left lateral temporal area was related to delayed recall scores of the same task. Similarly, in the figural memory, postoperative decline of immediate recall scores was associated with the resection of the anterior part of the right hippocampus, amygdala, parahippocampal area, and superior temporal area, and decline of delayed recall scores was related to resection of the posterior part of the right hippocampus and parahippocampal area. CONCLUSIONS Using voxel-based analysis, which accounts for the individual differences in the resection, the authors found a critical region for postoperative memory decline that is not revealed in the region-of-interest or groupwise comparison. Particularly, resection of the hippocampus was related to associative memory. In both verbal and visual memory, resection of the anterior part of the hippocampus was associated with immediate recall, and resection of the posterior part of the hippocampus was associated with delayed recall. Therefore, the authors' results suggest that selective resection may be effective in preserving postoperative memory decline.
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Affiliation(s)
- Dahye Kim
- 1Department of Brain and Cognitive Sciences and
| | - June Sic Kim
- 2Research Institute of Basic Sciences, Seoul National University College of Natural Sciences
| | - Woorim Jeong
- 3Department of Neurosurgery, Seoul National University Hospital; and
- 4Neuroscience Research Institute and
| | - Min-Sup Shin
- 5Department of Psychiatry and Behavioral Science, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chun Kee Chung
- 1Department of Brain and Cognitive Sciences and
- 3Department of Neurosurgery, Seoul National University Hospital; and
- 4Neuroscience Research Institute and
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Anterolateral entorhinal cortex volume is associated with memory retention in clinically unimpaired older adults. Neurobiol Aging 2020; 98:134-145. [PMID: 33278686 DOI: 10.1016/j.neurobiolaging.2020.10.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 12/14/2022]
Abstract
The entorhinal cortex is subdivided into anterolateral entorhinal cortex (alERC) and posteromedial entorhinal cortex (pmERC) subregions, which are theorized to support distinct cognitive roles. This distinction is particularly important as the alERC is one of the earliest cortical regions affected by Alzheimer's pathology and related neurodegeneration. The relative associations of alERC/pmERC with neuropsychological test performance have not been examined. We examined how alERC/pmERC volumes differentially relate to performance on 1) the Modified Rey Auditory Learning Test (ModRey), a verbal memory test designed to assess normal/preclinical populations, 2) the Montreal Cognitive Assessment (MoCA), and 3) the National Alzheimer's Coordinating Center neuropsychological battery. We also examined whether alERC/pmERC volumes correlate with Alzheimer's disease cerebrospinal fluid (CSF) biomarkers. In 65 cognitively healthy (CDR = 0) older adults, alERC, but not pmERC, volume was associated with ModRey memory retention. Only alERC volume differentiated between participants who scored above and below the MoCA cutoff score for impairment. Evaluating the MoCA subdomains revealed that alERC was particularly associated with verbal recall. On the National Alzheimer's Coordinating Center battery, both alERC and pmERC volumes were associated with Craft story recall and Benson figure copy, but only alERC volume was associated with Craft story retention and semantic fluency. Neither alERC nor pmERC volume correlated with CSF levels of amyloid or tau, and regression analyses showed that alERC volume and CSF amyloid levels were independently associated with ModRey retention performance. Taken together, these results suggest that the alERC is important for memory performance and that alERC volume differences are related to a pattern of neuropsychological test performance (i.e., impairments in episodic memory and semantic fluency) typically seen in clinical Alzheimer's disease.
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Roubicek G, Gonzalez L, Lah S, Jackman A, Harvey AS, Saling MM. Verbal memory in children with temporal lobe epilepsy: Exploring task-specificity. Epilepsy Behav 2020; 111:107341. [PMID: 32795885 DOI: 10.1016/j.yebeh.2020.107341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/30/2020] [Accepted: 07/11/2020] [Indexed: 10/23/2022]
Abstract
RATIONALE This study explored the applicability of the adult model of task-specificity of memory to children with temporal lobe epilepsy (TLE). METHOD Retrospective clinical audit; 38 children and adolescents (6-16 years) with lesional TLE (n = 22 mesial; n = 16 lateral) treated at tertiary pediatric hospitals completed two types of verbal memory paradigms: arbitrary associative (Verbal Paired Associates - Hard Pairs) and semantically related (Verbal Paired Associates - Easy Pairs; Stories). RESULTS Children with mesial TLE performed more poorly than their lateral TLE counterparts on both types of memory paradigms: arbitrary associative and semantically related (Stories only). Groups with left and right TLE performed comparably on all verbal memory measures. CONCLUSIONS Our findings suggest that the adult model of task-specificity may not be completely applicable to children with TLE. Consideration of the developmental context is critical in research and clinical work with pediatric populations.
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Affiliation(s)
- Gabriella Roubicek
- Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia.
| | - Linda Gonzalez
- Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia; Murdoch Children's Research Institute, Royal Children's Hospital, 50 Flemington Road, Parkville, Victoria, Australia.
| | - Suncica Lah
- School of Psychology, The University of Sydney, 94 - 100 Mallett Street, Camperdown, Sydney, New South Wales, Australia.
| | - Angie Jackman
- Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia.
| | - A Simon Harvey
- Department of Neurology, Royal Children's Hospital, 50 Flemington Road, Parkville, Victoria, Australia; Department of Paediatrics, The University of Melbourne, Parkville, Victoria, Australia.
| | - Michael Martin Saling
- Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia; The Florey Institute of Neuroscience and Mental Health, 245 Burgundy Street, Heidelberg, Victoria, Australia.
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Grewe P, Neu D, Aengenendt J, Woermann FG, Mertens M, Bien CG, Kissler J. Rhinal and hippocampal contributions to spontaneous inter-item binding and verbal memory recall: Evidence from temporal lobe epilepsy. Cortex 2020; 124:204-216. [DOI: 10.1016/j.cortex.2019.11.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 10/29/2019] [Accepted: 11/20/2019] [Indexed: 11/25/2022]
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Bauman K, Devinsky O, Liu AA. Temporal lobe surgery and memory: Lessons, risks, and opportunities. Epilepsy Behav 2019; 101:106596. [PMID: 31711868 PMCID: PMC6885125 DOI: 10.1016/j.yebeh.2019.106596] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/04/2019] [Accepted: 10/04/2019] [Indexed: 11/19/2022]
Abstract
Careful study of the clinical outcomes of temporal lobe epilepsy (TLE) surgery has greatly advanced our knowledge of the neuroanatomy of human memory. After early cases resulted in profound amnesia, the critical role of the hippocampus and associated medial temporal lobe (MTL) structures to declarative memory became evident. Surgical approaches quickly changed to become unilateral and later, to be more precise, potentially reducing cognitive morbidity. Neuropsychological studies following unilateral temporal lobe resection (TLR) have challenged early models, which simplified the lateralization of verbal and visual memory function. Diagnostic tests, including intracarotid sodium amobarbital procedure (WADA), structural magnetic resonance imaging (MRI), and functional neuroimaging (functional MRI (fMRI), positron emission tomography (PET), and single-photon emission computed tomography (SPECT)), can more accurately lateralize and localize epileptogenic cortex and predict memory outcomes from surgery. Longitudinal studies have shown that memory may even improve in seizure-free patients. From 70 years of experience with epilepsy surgery, we now have a richer understanding of the clinical, neuroimaging, and surgical predictors of memory decline-and improvement-after TLR. "Special Issue: Epilepsy & Behavior's 20th Anniversary".
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Affiliation(s)
- Kristie Bauman
- NYU Langone Health, Department of Neurology, 222 East 41st Street 9th Floor, New York, NY 10017, United States of America
| | - Orrin Devinsky
- NYU Langone Health, Department of Neurology, 222 East 41st Street 9th Floor, New York, NY 10017, United States of America; NYU Comprehensive Epilepsy Center, 223 East 34th Street, New York, NY 10016, United States of America
| | - Anli A Liu
- NYU Langone Health, Department of Neurology, 222 East 41st Street 9th Floor, New York, NY 10017, United States of America; NYU Comprehensive Epilepsy Center, 223 East 34th Street, New York, NY 10016, United States of America.
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