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Parkinson's executive function

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https://www.readbyqxmd.com/read/28325582/a-novel-framework-for-understanding-reduced-awareness-of-dyskinesias-in-parkinson-s-disease
#1
Sara Palermo, Leonardo Lopiano, Maurizio Zibetti, Rosalba Rosato, Daniela Leotta, Martina Amanzio
BACKGROUND: Although dyskinesias-reduced-self-awareness (DRSA) in Parkinson's disease (PD) is related to deficit in metacognition, other factors, such as "Theory of Mind" (ToM), could operate. METHODS: Forty-one PD patients were assessed using the Global Awareness of Movement Disorders (GAM) and the Dyskinesias Subtracted-Index (DS-I). To study whether GAM and DS-I scores could be influenced by second-type ToM or Reading the Mind in the Eyes (RME) tasks, we conducted two multiple logistic regression analyses...
March 16, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28323092/the-effect-of-deep-brain-stimulation-of-the-subthalamic-nucleus-on-executive-functions-impaired-verbal-fluency-and-intact-updating-planning-and-conflict-resolution-in-parkinson-s-disease
#2
Gyula Demeter, István Valálik, Péter Pajkossy, Agnes Szőllősi, Ágnes Lukács, Ferenc Kemény, Mihály Racsmány
Although the improvement of motor symptoms in Parkinson's disease (PD) after Deep Brain Stimulation (DBS) of the subthalamic nucleus (STN) is well documented, there are open questions regarding its impact on cognitive functions. The aim of the present study was to assess the effect of bilateral DBS of the STN on executive functions in PD patients using a DBS wait-listed PD control group. Ten PD patients with DBS implantation (DBS group) and ten PD wait-listed patients (Clinical control group) participated in the study...
March 18, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28280646/meta-analysis-of-the-relationship-between-deep-brain-stimulation-in-patients-with-parkinson-s-disease-and-performance-in-evaluation-tests-for-executive-brain-functions
#3
REVIEW
A M Martínez-Martínez, O M Aguilar, C A Acevedo-Triana
Parkinson's disease (PD) is a neurodegenerative condition, which compromises the motor functions and causes the alteration of some executive brain functions. The presence of changes in cognitive symptoms in PD could be due to the procedure of deep brain stimulation (DBS). We searched in several databases for studies that compared performance in executive function tests before and after the DBS procedure in PE and then performed a meta-analysis. After the initial search, there were 15 articles that specifically evaluated the functions of verbal fluency, working memory, cognitive flexibility, abstract thinking, and inhibition...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28263252/flexed-truncal-posture-in-parkinson-disease-measurement-reliability-and-relationship-with-physical-and-cognitive-impairments-mobility-and-balance
#4
Aimi L Forsyth, Serene S Paul, Natalie E Allen, Catherine Sherrington, Victor S C Fung, Colleen G Canning
BACKGROUND AND PURPOSE: Flexed truncal posture is common in people with Parkinson disease (PD); however, little is known about the mechanisms responsible or its effect on physical performance. This cross-sectional study aimed to establish the reliability of a truncal posture measurement and explore relationships between PD impairments and truncal posture, as well as truncal posture and balance and mobility. METHODS: A total of 82 people with PD participated. Truncal posture was measured in standing as the distance between vertebra C7 and a wall...
April 2017: Journal of Neurologic Physical Therapy: JNPT
https://www.readbyqxmd.com/read/28258438/clinical-application-of-eye-movement-tasks-as-an-aid-to-understanding-parkinson-s-disease-pathophysiology
#5
REVIEW
Kikuro Fukushima, Junko Fukushima, Graham R Barnes
Parkinson's disease (PD) is a progressive neurodegenerative disorder of the basal ganglia. Most PD patients suffer from somatomotor and oculomotor disorders. The oculomotor system facilitates obtaining accurate information from the visual world. If a target moves slowly in the fronto-parallel plane, tracking eye movements occur that consist primarily of smooth-pursuit interspersed with corrective saccades. Efficient smooth-pursuit requires appropriate target selection and predictive compensation for inherent processing delays...
March 3, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28256044/striato-cortical-connections-in-parkinson-s-and-alzheimer-s-diseases-relation-to-cognition
#6
Lubomira Anderkova, Marek Barton, Irena Rektorova
BACKGROUND: Functional connectivity is abnormal in PD and in early Alzheimer's disease. OBJECTIVES: The objective of this study was to evaluate resting-state striato-cortical connectivity in PD and Alzheimer's disease and assess their relation to cognitive outcomes. Groups with mild cognitive impairment as a result of different pathologies (PD vs. Alzheimer's disease) were also compared. METHODS: Seed-based connectivity of the dorsal, middle, and ventral striatum was analyzed in 111 patients using functional MRI...
March 3, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28242338/the-relationship-between-impulse-control-disorders-and-cognitive-dysfunctions-in-parkinson-s-disease-a-meta-analysis
#7
REVIEW
Gabriella Santangelo, Simona Raimo, Paolo Barone
Impulse Control Disorders (ICD) are associated with impairment in cognitive flexibility and cortical inhibition. In Parkinson's Disease (PD) the relationship between ICD and cognitive dysfunctions is still unclear: some studies found different cognitive profiles between Parkinsonians with and without ICD, whereas others did not. Moreover, findings from studies on ICD in PD are conflicting on which cognitive function is altered. A meta-analysis of 34 studies was performed to shed light on relationship between ICD and cognitive dysfunctions and to reveal the cognitive function compromised in Parkinsonians with ICD...
February 24, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28235816/corpus-callosal-atrophy-and-associations-with-cognitive-impairment-in-parkinson-disease
#8
Jennifer G Goldman, Ian O Bledsoe, Doug Merkitch, Vy Dinh, Bryan Bernard, Glenn T Stebbins
OBJECTIVE: To investigate atrophy of the corpus callosum on MRI in Parkinson disease (PD) and its relationship to cognitive impairment. METHODS: One hundred patients with PD and 24 healthy control participants underwent clinical and neuropsychological evaluations and structural MRI brain scans. Participants with PD were classified as cognitively normal (PD-NC; n = 28), having mild cognitive impairment (PD-MCI; n = 47), or having dementia (PDD; n = 25) by Movement Disorder Society criteria...
February 24, 2017: Neurology
https://www.readbyqxmd.com/read/28235814/differentiating-cognitive-impairment-due-to-corticobasal-degeneration-and-alzheimer-disease
#9
Gregory S Day, Tae Sung Lim, Jason Hassenstab, Alison M Goate, Elizabeth A Grant, Catherine M Roe, Nigel J Cairns, John C Morris
OBJECTIVE: To identify clinical features that reliably differentiate individuals with cognitive impairment due to corticobasal degeneration (CBD) and Alzheimer disease (AD). METHODS: Clinical features were compared between individuals with autopsy-proven CBD (n = 17) and AD (n = 16). All individuals presented with prominent cognitive complaints and were evaluated annually with semistructured interviews, detailed neurologic examinations, and neuropsychological testing...
February 24, 2017: Neurology
https://www.readbyqxmd.com/read/28215728/domain-specific-accuracy-of-the-montreal-cognitive-assessment-subsections-in-parkinson-s-disease
#10
Taylor R Hendershott, Delphine Zhu, Seoni Llanes, Kathleen L Poston
OBJECTIVE: The Montreal Cognitive Assessment (MoCA) is among the most widely adopted screening tools for cognitive impairment because it includes tests in multiple domains and is available in 55 languages. The MoCA is often the only formal cognitive assessment available when comprehensive neuropsychological testing is not practical, such as rural clinical settings or large retrospective and multi-lingual research settings. However, the MoCA domain-specific subsections have never been formally assessed for sensitivity or specificity...
February 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28212832/motor-dysfunction-and-alterations-in-glutathione-concentration-cholinesterase-activity-and-bdnf-expression-in-substantia-nigra-pars-compacta-in-rats-with-pedunculopontine-lesion
#11
Lisette Blanco-Lezcano, Javier Jimenez-Martin, Mei-Li Díaz-Hung, Esteban Alberti-Amador, Maylin Wong-Guerra, Ma Elena González-Fraguela, Bárbara Estupiñán-Díaz, Teresa Serrano-Sánchez, Liliana Francis-Turner, Susana Delgado-Ocaña, Yanier Núñez-Figueredo, Yamilé Vega-Hurtado, Isabel Fernández-Jiménez
Pedunculopontine nucleus (PPN) has been considered a critically important region in the regulation of some of the physiological functions that fail during the progression of Parkinson's disease (PD). In this paper, the effects of unilateral neurotoxic lesion of the PPN [through the injection of N-methyl-d-aspartate (NMDA) solution (concentration: 0.1M; volume: 0.5µL)] in motor execution and gait disorders and the changes in cellular and molecular indicators in rat nigral tissue were evaluated. The motor execution was assessed using the beam test (BT) and the gait disorders by footprint test...
February 15, 2017: Neuroscience
https://www.readbyqxmd.com/read/28205494/language-deficits-as-a-preclinical-window-into-parkinson-s-disease-evidence-from-asymptomatic-parkin-and-dardarin-mutation-carriers
#12
Adolfo M García, Lucas Sedeño, Natalia Trujillo, Yamile Bocanegra, Diana Gomez, David Pineda, Andrés Villegas, Edinson Muñoz, William Arias, Agustín Ibáñez
OBJECTIVES: The worldwide spread of Parkinson's disease (PD) calls for sensitive and specific measures enabling its early (or, ideally, preclinical) detection. Here, we use language measures revealing deficits in PD to explore whether similar disturbances are present in asymptomatic individuals at risk for the disease. METHODS: We administered executive, semantic, verb-production, and syntactic tasks to sporadic PD patients, genetic PD patients with PARK2 (parkin) or LRRK2 (dardarin) mutation, asymptomatic first-degree relatives of the latter with similar mutations, and socio-demographically matched controls...
February 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28202373/is-fatigue-associated-with-cognitive-dysfunction-in-early-parkinson-s-disease
#13
Benzi M Kluger, Kenn Freddy Pedersen, Ole-Bjorn Tysnes, Solgunn O Ongre, Bjørg Øygarden, Karen Herlofson
INTRODUCTION: Fatigue is a common and disabling symptom which may be seen in early Parkinson's disease (PD). Our understanding of the phenomenology and etiology of fatigue in PD is limited. The objective of this study was to determine whether fatigue was related to cognition in early PD patients. METHODS: The study is part of the Norwegian ParkWest project, a population-based cohort study, comprising 184 de novo, drug-naïve patients with PD. PD was diagnosed according to the Gelb criteria...
February 7, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28193533/effect-of-dual-mode-and-dual-site-non-invasive-brain-stimulation-on-freezing-of-gait-in-patients-with-parkinson-s-disease
#14
Won Hyuk Chang, Min Soo Kim, Eunhee Park, Jin Whan Cho, Jinyoung Youn, Yun Kwan Kim, Yun-Hee Kim
OBJECTIVE: To investigate the effect of dual-mode non-invasive brain stimulation (NIBS) with high-frequency repetitive transcranial magnetic stimulation (rTMS) over the primary motor cortex of the lower leg and anodal transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex compared with rTMS alone in patients with Parkinson's disease (PD) with freezing of gait (FOG). DESIGN: Randomized, double-blind, controlled study. SETTING: Outpatient rehabilitation clinics...
February 10, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28176003/assessment-of-individual-cognitive-changes-after-deep-brain-stimulation-surgery-in-parkinson-s-disease-using-the-neuropsychological-test-battery-vienna-short-version
#15
Thomas Foki, Daniela Hitzl, Walter Pirker, Klaus Novak, Gisela Pusswald, Eduard Auff, Johann Lehrner
Long-term therapy of Parkinson's disease with L‑DOPA is associated with a high risk of developing motor fluctuations and dyskinesia. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) can improve these motor complications. Although the positive effect on motor symptoms has been proven, postoperative cognitive decline has been documented. To tackle the impact of DBS on cognition, 18 DBS patients were compared to 25 best medically treated Parkinson's patients, 24 patients with mild cognitive impairment (MCI) and 12 healthy controls using the Neuropsychological Test Battery Vienna short version (NTBV-short) for cognitive outcome 12 months after the first examination...
February 7, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28174514/associations-among-cognitive-functions-plasma-dna-and-white-matter-integrity-in-patients-with-early-onset-parkinson-s-disease
#16
Yueh-Sheng Chen, Meng-Hsiang Chen, Cheng-Hsien Lu, Pei-Chin Chen, Hsiu-Ling Chen, I-Hsiao Yang, Nai-Wen Tsai, Wei-Che Lin
Early-onset Parkinson's disease (EOPD) patients are symptomatic at a relatively young age, and the impacts of the disease on both the patients and their caregivers are dramatic. Few studies have reported on the cognitive impairments seen in EOPD, and the results of these studies have been diverse. Furthermore, it is still unclear what microstructural white matter (WM) changes are present in EOPD patients. As such, we conducted this study to investigate the microstructural WM changes experienced by EOPD patients and their association with cognitive function and plasma DNA levels...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28170111/the-effects-of-lifelong-cognitive-lifestyle-on-executive-function-in-older-people-with-parkinson-s-disease
#17
John V Hindle, Pamela A Martin-Forbes, Anthony Martyr, Alexandra J M Bastable, Kirstie L Pye, Virginia C Mueller Gathercole, Enlli M Thomas, Linda Clare
OBJECTIVE: Active lifelong cognitive lifestyles increase cognitive reserve and have beneficial effects on global cognition, cognitive decline and dementia risk in Parkinson's disease (PD). Executive function is particularly impaired even in early PD, and this impacts on quality of life. The effects of lifelong cognitive lifestyle on executive function in PD have not been studied previously. This study examined the association between lifelong cognitive lifestyle, as a proxy measure of cognitive reserve, and executive function in people with PD...
February 7, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28162137/are-parkinson-s-patients-more-vulnerable-to-the-effects-of-cardiovascular-risk-a-neuroimaging-and-neuropsychological-study
#18
Jacob D Jones, Jared J Tanner, Michael Okun, Catherine C Price, Dawn Bowers
OBJECTIVES: This study examined whether individuals with Parkinson's disease (PD) are at increased vulnerability for vascular-related cognitive impairment relative to controls. The underlying assumption behind this hypothesis relates to brain reserve and that both PD and vascular risk factors impair similar fronto-executive cognitive systems. METHODS: The sample included 67 PD patients and 61 older controls (total N=128). Participants completed neuropsychological measures of executive functioning, processing speed, verbal delayed recall/memory, language, and auditory attention...
February 6, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28127512/side-of-onset-of-parkinson-s-disease-in-relation-to-neuropsychological-measures
#19
Edward J Modestino, Chioma Amenechi, AnnaMarie Reinhofer, Patrick O'Toole
BACKGROUND: Parkinson's disease (PD) usually emerges with a unilateral side-of-onset (left-onset: LOPD; right-onset: ROPD; Marinus & van Hilten, 2015) due to an asymmetrical degeneration of striatal dopaminergic neurons (Donnemiller et al., Brain, 135, 2012, 3348). This has led to a body of research exploring the cognitive, neuropsychological, and clinical differences between LOPD and ROPD (e.g., Verreyt et al., Neuropsychology Review, 21, 2011, 405). METHODS: Thirty ROPD and 14 LOPD cases were drawn from a Boston clinic specializing in PD...
January 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28119070/non-invasive-brain-stimulation-in-parkinson-s-disease-exploiting-crossroads-of-cognition-and-mood
#20
REVIEW
Lars Dinkelbach, Michela Brambilla, Rosa Manenti, Anna-Katharine Brem
Cognitive impairments and depression are common non-motor manifestations in Parkinson's disease (PD). Recent evidence suggests that both partially arise via the same frontostriatal network, opening the opportunity for concomitant treatment with non-invasive brain stimulation (NIBS) techniques such as repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS). In this systematic review, we evaluate the effects of NIBS on cognition and/or mood in 19 placebo-controlled studies involving 561 PD patients...
January 21, 2017: Neuroscience and Biobehavioral Reviews
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