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Neuropsychology

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472 papers 100 to 500 followers
https://www.readbyqxmd.com/read/28687722/a-meta-analysis-on-progressive-atrophy-in-intractable-temporal-lobe-epilepsy-time-is-brain
#1
REVIEW
Lorenzo Caciagli, Andrea Bernasconi, Samuel Wiebe, Matthias J Koepp, Neda Bernasconi, Boris C Bernhardt
OBJECTIVE: It remains unclear whether drug-resistant temporal lobe epilepsy (TLE) is associated with cumulative brain damage, with no expert consensus and no quantitative syntheses of the available evidence. METHODS: We conducted a systematic review and meta-analysis of MRI studies on progressive atrophy, searching PubMed and Ovid MEDLINE databases for cross-sectional and longitudinal quantitative MRI studies on drug-resistant TLE. RESULTS: We screened 2,976 records and assessed eligibility of 248 full-text articles...
August 1, 2017: Neurology
https://www.readbyqxmd.com/read/24239589/the-relationship-between-meg-and-fmri
#2
REVIEW
Emma L Hall, Siân E Robson, Peter G Morris, Matthew J Brookes
In recent years functional neuroimaging techniques such as fMRI, MEG, EEG and PET have provided researchers with a wealth of information on human brain function. However none of these modalities can measure directly either the neuro-electrical or neuro-chemical processes that mediate brain function. This means that metrics directly reflecting brain 'activity' must be inferred from other metrics (e.g. magnetic fields (MEG) or haemodynamics (fMRI)). To overcome this limitation, many studies seek to combine multiple complementary modalities and an excellent example of this is the combination of MEG (which has high temporal resolution) with fMRI (which has high spatial resolution)...
November 15, 2014: NeuroImage
https://www.readbyqxmd.com/read/28433263/memory-assessment-in-patients-with-temporal-lobe-epilepsy-to-predict-memory-impairment-after-surgery-a-systematic-review
#3
P Parra-Díaz, N García-Casares
INTRODUCTION: Given that surgical treatment of refractory mesial temporal lobe epilepsy may cause memory impairment, determining which patients are eligible for surgery is essential. However, there is little agreement on which presurgical memory assessment methods are best able to predict memory outcome after surgery and identify those patients with a greater risk of surgery-induced memory decline. OBJECTIVE: We conducted a systematic literature review to determine which presurgical memory assessment methods best predict memory outcome...
April 19, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28567171/a-functional-mri-based-model-for-individual-memory-assessment-in-patients-eligible-for-anterior-temporal-lobe-resection
#4
Maria Strandberg, Peter Mannfolk, Lars Stenberg, Hanna Ljung, Ia Rorsman, Elna-Marie Larsson, Danielle van Westen, Kristina Källén
TITLE: A functional (f) MRI-based model for individual memory assessment in patients eligible for temporal lobe resection. AIM: To investigate if pre-operative fMRI memory paradigms, add predictive information with regard to post-surgical memory deficits. METHODS: Fourteen pharmacoresistant Temporal Lobe Epilepsy (TLE) patients accepted for Anterior Temporal Lobe Resection (ATLR) were included. A clinical risk assessment score (RAS 0-3) was constructed from structural MRI, neuropsychological testing and hemisphere dominance...
2017: Open Neuroimaging Journal
https://www.readbyqxmd.com/read/28623489/comparing-the-intracarotid-amobarbital-test-and-functional-mri-for-the-presurgical-evaluation-of-language-in-epilepsy
#5
REVIEW
Andreu Massot-Tarrús, Seyed Reza Mousavi, Seyed M Mirsattari
Surgery is the treatment of choice for drug-resistant temporal lobe epilepsy (TLE). However, such surgery frequently causes deficits in language function, especially if performed on the dominant hemisphere. In recent years, the intracarotid amobarbital test (IAT) has been gradually replaced by functional magnetic resonance imaging (fMRI) in the preoperative identification of language areas to estimate the risk of postoperative language decline. In this paper, we review the neural substrates for language processing, how language impairment can result both from TLE itself and from surgical attempts to treat it...
July 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28731429/severity-of-depression-impacts-imminent-conversion-from-mild-cognitive-impairment-to-alzheimer-s-disease
#6
Michaela Defrancesco, Josef Marksteiner, Georg Kemmler, Walter Wolfgang Fleischhacker, Imrich Blasko, Eberhard A Deisenhammer
BACKGROUND: Mild cognitive impairment (MCI) has been suggested to represent a prodromal stage of dementia and to confer a high risk for conversion to dementia Alzheimer's type (DAT). OBJECTIVES: In this study, we examined the predictive value of depressive symptoms and neuropsychological variables on conversion of MCI to DAT. METHODS: Neuropsychological and clinical follow-up data of 260 MCI patients seen at the Psychiatric Memory Clinic of the Medical University of Innsbruck between 2005 and 2015 were analyzed retrospectively...
July 19, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28736089/long-term-cognitive-impairment-and-delirium-in-intensive-care-a-prospective-cohort-study
#7
Marion L Mitchell, David H K Shum, Gabor Mihala, Jenny E Murfield, Leanne M Aitken
BACKGROUND: Whilst there is a growing body of research exploring the effect of delirium in intensive care unit (ICU) patients, the relationship between patient delirium and long-term cognitive impairment has not been investigated in settings where low rates of delirium have been reported. OBJECTIVES: To assess the association between the incidence of delirium, duration of mechanical ventilation and long term cognitive impairment in general ICU patients. METHODS: Prospective cohort study conducted in a tertiary level ICU in Queensland, Australia...
July 20, 2017: Australian Critical Care: Official Journal of the Confederation of Australian Critical Care Nurses
https://www.readbyqxmd.com/read/28738975/the-effect-of-cranioplasty-in-cognitive-and-functional-improvement-experience-of-post-traumatic-brain-injury-inpatient-rehabilitation
#8
Jyong-Huei Su, Yu-Hsin Wu, Nai-Wen Guo, Ching-Fen Huang, Cyuan-Fong Li, Chia-Hsin Chen, Mao-Hsiung Huang
To investigate the effect of cranioplasty on rehabilitation of post-traumatic brain injury (TBI) patients, 37 patients with TBI were arranged by retrospectively assessment study. Those TBI patients receiving in-hospital rehabilitation in the Department of Rehabilitation in a medical center of South Taiwan from 2010 to 2015 were assigned into two groups: A and B. All patients entered the multidisciplinary holistic in-patient rehabilitation training for about 1 month. Patients in Group A received decompressive craniectomy (DC), patients in Group B received DC and cranioplasty...
July 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/28750278/neuropsychological-deficits-in-adults-age-60-and-above-with-attention-deficit-hyperactivity-disorder
#9
L B Thorell, Y Holst, H Chistiansen, J J S Kooij, D Bijlenga, D Sjöwall
OBJECTIVE: Neuropsychological deficits are of major importance in ADHD, yet no previous studies have assessed clinically referred samples of older adults. The authors compared older adults with ADHD (60-75years) with both younger adults with ADHD (18-45years) and older healthy controls with regard to various neuropsychological deficits. METHODS: Well-established tests were used to investigate working memory, inhibition, switching, planning, fluency, and speed of processing...
June 27, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28656696/predictive-factors-of-long-term-outcomes-of-surgery-for-mesial-temporal-lobe-epilepsy-associated-with-hippocampal-sclerosis
#10
Bertrand Mathon, Franck Bielle, Séverine Samson, Odile Plaisant, Sophie Dupont, Anne Bertrand, Richard Miles, Vi-Huong Nguyen-Michel, Virginie Lambrecq, Ana Laura Calderon-Garcidueñas, Charles Duyckaerts, Alexandre Carpentier, Michel Baulac, Philippe Cornu, Claude Adam, Stéphane Clemenceau, Vincent Navarro
OBJECTIVE: The reasons for failure of surgical treatment for mesial temporal lobe epilepsy (MTLE) associated with hippocampal sclerosis (HS) remain unclear. This retrospective study analyzed seizure, cognitive, and psychiatric outcomes, searching for factors associated with seizure relapse or cognitive and psychiatric deterioration after MTLE-HS surgery. METHODS: Seizure, cognitive, and psychiatric outcomes were reviewed after 389 surgeries performed between 1990 and 2015 on patients aged 15-67 years at a tertiary center...
June 28, 2017: Epilepsia
https://www.readbyqxmd.com/read/28675974/toward-generally-accepted-forensic-assessment-practices-among-clinical-neuropsychologists-a-survey-of-professional-practice-and-common-test-use
#11
Casey LaDuke, William Barr, Donald L Brodale, Laura A Rabin
OBJECTIVE: This study investigated professional practice and common test use among clinical neuropsychologists engaging in forensic assessment. METHOD:  Doctorate-level psychologists active in the practice of neuropsychology and on the INS and NAN membership listings (n = 502) were surveyed about their demographics, professional practice, and common test use. Participants who reported engaging in forensic practice (n = 255) were further surveyed about their forensic practice...
July 4, 2017: Clinical Neuropsychologist
https://www.readbyqxmd.com/read/28570516/fiber-connections-of-the-supplementary-motor-area-revisited-methodology-of-fiber-dissection-dti-and-three-dimensional-documentation
#12
Baran Bozkurt, Kaan Yagmurlu, Erik H Middlebrooks, Zuzan Cayci, Orhun M Cevik, Ali Karadag, Sean Moen, Necmettin Tanriover, Andrew W Grande
The purpose of this study is to show the methodology for the examination of the white matter connections of the supplementary motor area (SMA) complex (pre-SMA and SMA proper) using a combination of fiber dissection techniques on cadaveric specimens and magnetic resonance (MR) tractography. The protocol will also describe the procedure for a white matter dissection of a human brain, diffusion tensor tractography imaging, and three-dimensional documentation. The fiber dissections on human brains and the 3D documentation were performed at the University of Minnesota, Microsurgery and Neuroanatomy Laboratory, Department of Neurosurgery...
May 23, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28664037/white-matter-tractography-for-neurosurgical-planning-a-topography-based-review-of-the-current-state-of-the-art
#13
REVIEW
Walid I Essayed, Fan Zhang, Prashin Unadkat, G Rees Cosgrove, Alexandra J Golby, Lauren J O'Donnell
We perform a review of the literature in the field of white matter tractography for neurosurgical planning, focusing on those works where tractography was correlated with clinical information such as patient outcome, clinical functional testing, or electro-cortical stimulation. We organize the review by anatomical location in the brain and by surgical procedure, including both supratentorial and infratentorial pathologies, and excluding spinal cord applications. Where possible, we discuss implications of tractography for clinical care, as well as clinically relevant technical considerations regarding the tractography methods...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28699372/hemispheric-asymmetries-in-dorsal-language-pathway-white-matter-tracts-a-magnetic-resonance-imaging-tractography-and-functional-magnetic-resonance-imaging-study
#14
Guilherme Silva, Alberto Citterio
Introduction Previous studies have shown that the arcuate fasciculus has a leftward asymmetry in right-handers that could be correlated with the language lateralisation defined by functional magnetic resonance imaging. Nonetheless, information about the asymmetry of the other fibres that constitute the dorsal language pathway is scarce. Objectives This study investigated the asymmetry of the white-matter tracts involved in the dorsal language pathway through the diffusion tensor imaging (DTI) technique, in relation to language hemispheric dominance determined by task-dependent functional magnetic resonance imaging (fMRI)...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28710324/brain-white-matter-fibre-tracts-a-review-of-functional-neuro-oncological-relevance
#15
REVIEW
Natalie L Voets, Andreas Bartsch, Puneet Plaha
State-of-the-art glioma treatment aims to maximise neuro-oncological benefit while minimising losses in quality of life. Optimising this balance remains hindered by our still limited understanding of information processing in the human brain. To help understand individual differences in functional outcomes following neuro-oncological treatment, we review mounting evidence demonstrating the fundamental role that white matter connections play in complex human behaviour. We focus on selected fibre tracts whose destruction is recognised to elicit predictable behavioural deficits and consider specific indications for non-invasive diffusion MRI tractography, the only existing method to map these fibre tracts in vivo, in the selection and planning of neuro-oncological treatments...
July 14, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28710907/distinct-contributions-of-the-fornix-and-inferior-longitudinal-fasciculus-to-episodic-and-semantic-autobiographical-memory
#16
Carl J Hodgetts, Mark Postans, Naomi Warne, Alice Varnava, Andrew D Lawrence, Kim S Graham
Autobiographical memory (AM) is multifaceted, incorporating the vivid retrieval of contextual detail (episodic AM), together with semantic knowledge that infuses meaning and coherence into past events (semantic AM). While neuropsychological evidence highlights a role for the hippocampus and anterior temporal lobe (ATL) in episodic and semantic AM, respectively, it is unclear whether these constitute dissociable large-scale AM networks. We used high angular resolution diffusion-weighted imaging and constrained spherical deconvolution-based tractography to assess white matter microstructure in 27 healthy young adult participants who were asked to recall past experiences using word cues...
June 20, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/23866901/a-re-examination-of-neural-basis-of-language-processing-proposal-of-a-dynamic-hodotopical-model-from-data-provided-by-brain-stimulation-mapping-during-picture-naming
#17
Hugues Duffau, Sylvie Moritz-Gasser, Emmanuel Mandonnet
From recent findings provided by brain stimulation mapping during picture naming, we re-examine the neural basis of language. We studied structural-functional relationships by correlating the types of language disturbances generated by stimulation in awake patients, mimicking a transient virtual lesion both at cortical and subcortical levels (white matter and deep grey nuclei), with the anatomical location of the stimulation probe. We propose a hodotopical (delocalized) and dynamic model of language processing, which challenges the traditional modular and serial view...
April 2014: Brain and Language
https://www.readbyqxmd.com/read/22998058/subcortical-surgical-anatomy-of-the-lateral-frontal-region-human-white-matter-dissection-and-correlations-with-functional-insights-provided-by-intraoperative-direct-brain-stimulation-laboratory-investigation
#18
Alessandro De Benedictis, Silvio Sarubbo, Hugues Duffau
OBJECT: Recent neuroimaging and surgical results support the crucial role of white matter in mediating motor and higher-level processing within the frontal lobe, while suggesting the limited compensatory capacity after damage to subcortical structures. Consequently, an accurate knowledge of the anatomofunctional organization of the pathways running within this region is mandatory for planning safe and effective surgical approaches to different diseases. The aim of this dissection study was to improve the neurosurgeon's awareness of the subcortical anatomofunctional architecture for a lateral approach to the frontal region, to optimize both resection and postoperative outcome...
December 2012: Journal of Neurosurgery
https://www.readbyqxmd.com/read/25848923/stimulation-mapping-of-white-matter-tracts-to-study-brain-functional-connectivity
#19
REVIEW
Hugues Duffau
Despite advances in the new science of connectomics, which aims to comprehensively map neural connections at both structural and functional levels, techniques to directly study the function of white matter tracts in vivo in humans have proved elusive. Direct electrical stimulation (DES) mapping of the subcortical fibres offers a unique opportunity to investigate the functional connectivity of the brain. This original method permits real-time anatomo-functional correlations, especially with regard to neural pathways, in awake patients undergoing brain surgery...
May 2015: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28486641/current-clinical-brain-tumor-imaging
#20
Javier E Villanueva-Meyer, Marc C Mabray, Soonmee Cha
Neuroimaging plays an ever evolving role in the diagnosis, treatment planning, and post-therapy assessment of brain tumors. This review provides an overview of current magnetic resonance imaging (MRI) methods routinely employed in the care of the brain tumor patient. Specifically, we focus on advanced techniques including diffusion, perfusion, spectroscopy, tractography, and functional MRI as they pertain to noninvasive characterization of brain tumors and pretreatment evaluation. The utility of both structural and physiological MRI in the post-therapeutic brain evaluation is also reviewed with special attention to the challenges presented by pseudoprogression and pseudoresponse...
May 9, 2017: Neurosurgery
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