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Gruszka A, Hampshire A, Barker RA, Owen AM. Normal aging and Parkinson's disease are associated with the functional decline of distinct frontal-striatal circuits. Cortex 2017; 93:178-192. [PMID: 28667892 PMCID: PMC5542042 DOI: 10.1016/j.cortex.2017.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 03/29/2017] [Accepted: 05/24/2017] [Indexed: 01/11/2023]
Abstract
Impaired ability to shift attention between stimuli (i.e. shifting attentional ‘set’) is a well-established part of the dysexecutive syndrome in Parkinson's Disease (PD), nevertheless cognitive and neural bases of this deficit remain unclear. In this study, an fMRI-optimised variant of a classic paradigm for assessing attentional control (Hampshire and Owen 2006) was used to contrast activity in dissociable executive circuits in early-stage PD patients and controls. The results demonstrated that the neural basis of the executive performance impairments in PD is accompanied by hypoactivation within the striatum, anterior cingulate cortex (vACC), and inferior frontal sulcus (IFS) regions. By contrast, in aging it is associated with hypoactivation of the anterior insula/inferior frontal operculum (AI/FO) and the pre-supplementary motor area (preSMA). Between group behavioural differences were also observed; whereas normally aging individuals exhibited routine-problem solving deficits, PD patients demonstrated more global task learning deficits. These findings concur with recent research demonstrating model-based reinforcement learning deficits in PD and provide evidence that the AI/FO and IFS circuits are differentially impacted by PD and normal aging.
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Affiliation(s)
| | - Adam Hampshire
- The Division of Brain Sciences, Imperial College London, UK
| | - Roger A Barker
- Cambridge Centre for Brain Repair, University of Cambridge, UK; Department of Neurology, Addenbrooke's Hospital, Cambridge, UK
| | - Adrian M Owen
- The Brain and Mind Institute, University of Western Ontario, Canada
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3
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Nitschke K, Köstering L, Finkel L, Weiller C, Kaller CP. A Meta-analysis on the neural basis of planning: Activation likelihood estimation of functional brain imaging results in the Tower of London task. Hum Brain Mapp 2016; 38:396-413. [PMID: 27627877 DOI: 10.1002/hbm.23368] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 08/25/2016] [Accepted: 08/25/2016] [Indexed: 01/02/2023] Open
Abstract
The ability to mentally design and evaluate series of future actions has often been studied in terms of planning abilities, commonly using well-structured laboratory tasks like the Tower of London (ToL). Despite a wealth of studies, findings on the specific localization of planning processes within prefrontal cortex (PFC) and on the hemispheric lateralization are equivocal. Here, we address this issue by integrating evidence from two different sources of data: First, we provide a systematic overview of the existing lesion data on planning in the ToL (10 studies, 211 patients) which does not indicate any evidence for a general lateralization of planning processes in (pre)frontal cortex. Second, we report a quantitative meta-analysis with activation likelihood estimation based on 31 functional neuroimaging datasets on the ToL. Separate meta-analyses of the activation patterns reported for Overall Planning (537 participants) and for Planning Complexity (182 participants) congruently show bilateral contributions of mid-dorsolateral PFC, frontal eye fields, supplementary motor area, precuneus, caudate, anterior insula, and inferior parietal cortex in addition to a left-lateralized involvement of rostrolateral PFC. In contrast to previous attributions of planning-related brain activity to the entire dorsolateral prefrontal cortex (dlPFC) and either its left or right homolog derived from single studies on the ToL, the present meta-analyses stress the pivotal role specifically of the mid-dorsolateral part of PFC (mid-dlPFC), presumably corresponding to Brodmann Areas 46 and 9/46, and strongly argue for a bilateral rather than lateralized involvement of the dlPFC in planning in the ToL. Hum Brain Mapp 38:396-413, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Kai Nitschke
- Department of Neurology, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center University of Freiburg, Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence University of Freiburg, Freiburg, Germany.,Biological and Personality Psychology, Department of Psychology, University of Freiburg, Freiburg, Germany
| | - Lena Köstering
- Department of Neurology, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center University of Freiburg, Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence University of Freiburg, Freiburg, Germany.,Department of Neuroradiology, Medical Center - University of Freiburg, Freiburg, Germany
| | - Lisa Finkel
- Department of Neurology, Medical Center - University of Freiburg, Freiburg, Germany.,Motor Cognition Group, Department of Psychology, University of Konstanz, Konstanz, Germany
| | - Cornelius Weiller
- Department of Neurology, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center University of Freiburg, Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence University of Freiburg, Freiburg, Germany
| | - Christoph P Kaller
- Department of Neurology, Medical Center - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,Freiburg Brain Imaging Center University of Freiburg, Freiburg, Germany.,BrainLinks-BrainTools Cluster of Excellence University of Freiburg, Freiburg, Germany
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Robertson EE, Hall DA, McAsey AR, O'Keefe JA. Fragile X-associated tremor/ataxia syndrome: phenotypic comparisons with other movement disorders. Clin Neuropsychol 2016; 30:849-900. [PMID: 27414076 PMCID: PMC7336900 DOI: 10.1080/13854046.2016.1202239] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 06/12/2016] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The purpose of this paper is to review the typical cognitive and motor impairments seen in fragile X-associated tremor/ataxia syndrome (FXTAS), essential tremor (ET), Parkinson disease (PD), spinocerebellar ataxias (SCAs), multiple system atrophy (MSA), and progressive supranuclear palsy (PSP) in order to enhance diagnosis of FXTAS patients. METHODS We compared the cognitive and motor phenotypes of FXTAS with each of these other movement disorders. Relevant neuropathological and neuroimaging findings are also reviewed. Finally, we describe the differences in age of onset, disease severity, progression rates, and average lifespan in FXTAS compared to ET, PD, SCAs, MSA, and PSP. We conclude with a flow chart algorithm to guide the clinician in the differential diagnosis of FXTAS. RESULTS By comparing the cognitive and motor phenotypes of FXTAS with the phenotypes of ET, PD, SCAs, MSA, and PSP we have clarified potential symptom overlap while elucidating factors that make these disorders unique from one another. In summary, the clinician should consider a FXTAS diagnosis and testing for the Fragile X mental retardation 1 (FMR1) gene premutation if a patient over the age of 50 (1) presents with cerebellar ataxia and/or intention tremor with mild parkinsonism, (2) has the middle cerebellar peduncle (MCP) sign, global cerebellar and cerebral atrophy, and/or subcortical white matter lesions on MRI, or (3) has a family history of fragile X related disorders, intellectual disability, autism, premature ovarian failure and has neurological signs consistent with FXTAS. Peripheral neuropathy, executive function deficits, anxiety, or depression are supportive of the diagnosis. CONCLUSIONS Distinct profiles in the cognitive and motor domains between these movement disorders may guide practitioners in the differential diagnosis process and ultimately lead to better medical management of FXTAS patients.
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Affiliation(s)
- Erin E Robertson
- a Department of Anatomy and Cell Biology , Rush University , Chicago , IL , USA
| | - Deborah A Hall
- b Department of Neurological Sciences , Rush University , Chicago , IL , USA
| | - Andrew R McAsey
- a Department of Anatomy and Cell Biology , Rush University , Chicago , IL , USA
| | - Joan A O'Keefe
- a Department of Anatomy and Cell Biology , Rush University , Chicago , IL , USA
- b Department of Neurological Sciences , Rush University , Chicago , IL , USA
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Fallon SJ, Smulders K, Esselink RA, van de Warrenburg BP, Bloem BR, Cools R. Differential optimal dopamine levels for set-shifting and working memory in Parkinson's disease. Neuropsychologia 2015; 77:42-51. [DOI: 10.1016/j.neuropsychologia.2015.07.031] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 07/28/2015] [Accepted: 07/30/2015] [Indexed: 12/16/2022]
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