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Çekok FK, Kahraman T, Genç A, Duran G, Çolakoğlu BD, Yerlikaya D, Yener G. Association between executive and physical functions in people with Parkinson's disease. Somatosens Mot Res 2024; 41:142-148. [PMID: 36908266 DOI: 10.1080/08990220.2023.2186393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023]
Abstract
PURPOSE People with Parkinson's disease (PD) can develop cognitive and physical impairments. There is limited evidence on the association between executive function and physical function in people with PD. OBJECTIVE We aimed to investigate the association between the executive and physical functions in people with Parkinson's disease (PD) by comparing healthy controls. METHOD Thirty-three patients diagnosed with PD and 33 healthy controls were included in the study. PD group was divided into two subgroups according to their scores on executive tests as high performers (PD-HPs; n = 17) and low performers (PD-LPs; n = 16). The severity of motor symptoms disease severity, executive function, global cognitive function, reaction time, hand function, functional capacity, physical activity, and balance confidence was assessed by the validated instruments. RESULTS The PD group had less physical function and executive function compared to healthy controls (p < 0.05). The PD-LPs group had less physical and cognitive function than the PD-HPs group (p < 0.05). The executive functions were significantly correlated with almost all variables in both people with PD and healthy people, and correlations were moderate to strong (p < 0.05). However, the correlation coefficients were relatively higher in people with PD compared to healthy controls. CONCLUSION There was a significant association between executive and physical function in people with PD. Future studies should be conducted to determine whether the treatment of one of these dysfunctions affects the other.
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Affiliation(s)
- Fatma Kübra Çekok
- Department of Physiotherapy and Rehabilition, School of Health Sciences, Tarsus University, Mersin, Turkey
- Graduate School of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Turhan Kahraman
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Izmir Katip Celebi University, Izmir, Turkey
| | - Arzu Genç
- Faculty of Physical Therapy and Rehabilitation, Dokuz Eylül University, Izmir, Turkey
| | - Gözde Duran
- Graduate School of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | | | - Deniz Yerlikaya
- Graduate School of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Görsev Yener
- Department of Neurology, Faculty of Medicine, Dokuz Eylül University, Izmir, Turkey
- Izmir Biomedicine and Genome Center, Dokuz Eylül University, Izmir, Turkey
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Ramos AA, Garvey A, Cutfield NJ, Machado L. Forward and backward spatial recall in Parkinson's disease and matched controls: A 1-year follow-up study. APPLIED NEUROPSYCHOLOGY. ADULT 2024; 31:647-656. [PMID: 35412882 DOI: 10.1080/23279095.2022.2059372] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Patients with Parkinson's disease (PD) exhibit a domain-general visuospatial dysfunction; however, no previous study has examined changes over time in forward and backward spatial recall in PD against controls. To evaluate changes in short-term (STM) and working memory (WM) dysfunction in PD, the current study assessed performance on a computer-modified version of the Corsi Block-Tapping Test (forward and backward recall) at two-time points 1 year apart, while simultaneously exploring associations with potentially relevant demographic and clinical variables. We enrolled 38 patients with PD and 38 controls matched for age, sex, and Montreal Cognitive Assessment (MoCA) total scores. Linear mixed-effects models analyzed the primary measured variables (forward and backward scores). At baseline, the dysfunction effect sizes were as follows: forward recall (-0.45, 95% CI [-0.90, 0.01]) and backward recall (-0.26, 95% CI [-0.71, 0.19]). At follow-up, patients exhibited substantially greater difficulties in backward recall (-0.65, 95% CI [-1.18, -0.13]) compared to the baseline assessment, whereas the forward dysfunction effect size remained almost the same (-0.43, 95% CI [-0.94, 0.09]). Age (p = .005, f = 0.35) and total scores on MoCA (p = .017, f = 0.18), irrespective of group and recall condition, were significant predictors of spatial block scores. The pattern of dysfunction effect sizes indicates that, in contrast to forward recall, backward recall dysfunction in PD worsened 1-year after the baseline assessment, presumably reflecting the progression of PD-related visuospatial WM dysfunction.
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Affiliation(s)
- Ari Alex Ramos
- Department of Psychology, University of Otago, Dunedin, New Zealand
| | - Anthony Garvey
- Department of Medicine, University of Otago, Dunedin, New Zealand
| | | | - Liana Machado
- Department of Psychology, University of Otago, Dunedin, New Zealand
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Saban W, Pinheiro-Chagas P, Borra S, Ivry RB. Distinct Contributions of the Cerebellum and Basal Ganglia to Arithmetic Procedures. J Neurosci 2024; 44:e1482222023. [PMID: 37973376 PMCID: PMC10866191 DOI: 10.1523/jneurosci.1482-22.2023] [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] [Received: 08/02/2022] [Revised: 10/03/2023] [Accepted: 10/23/2023] [Indexed: 11/19/2023] Open
Abstract
Humans exhibit complex mathematical skills attributed to the exceptional enlargement of neocortical regions throughout evolution. In the current work, we initiated a novel exploration of the ancient subcortical neural network essential for mathematical cognition. Using a neuropsychological approach, we report that degeneration of two subcortical structures, the cerebellum and basal ganglia, impairs performance in symbolic arithmetic. We identify distinct computational impairments in male and female participants with cerebellar degeneration (CD) or Parkinson's disease (PD). The CD group exhibited a disproportionate cost when the arithmetic sum increased, suggesting that the cerebellum is critical for iterative procedures required for calculations. The PD group showed a disproportionate cost for equations with increasing addends, suggesting that the basal ganglia are critical for chaining multiple operations. In Experiment 2, the two patient groups exhibited intact practice gains for repeated equations at odds with an alternative hypothesis that these impairments were related to memory retrieval. Notably, we discuss how the counting and chaining operations relate to cerebellar and basal ganglia function in other task domains (e.g., motor processes). Overall, we provide a novel perspective on how the cerebellum and basal ganglia contribute to symbolic arithmetic. Our studies demonstrate the constraints on the computational role of two subcortical regions in higher cognition.
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Affiliation(s)
- William Saban
- Center for Accessible Neuropsychology, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
- Department of Occupational Therapy, Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Pedro Pinheiro-Chagas
- UCSF Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, California 94158
| | - Sravya Borra
- Center for Accessible Neuropsychology, Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
- Department of Occupational Therapy, Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Richard B Ivry
- Department of Psychology, University of California, Berkeley, California 94720-1650
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Díaz-Barriga Yáñez A, Longo L, Chesnokova H, Poletti C, Thevenot C, Prado J. Neural evidence for procedural automatization during cognitive development: Intraparietal response to changes in very-small addition problem-size increases with age. Dev Cogn Neurosci 2023; 64:101310. [PMID: 37806070 PMCID: PMC10570710 DOI: 10.1016/j.dcn.2023.101310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 07/28/2023] [Accepted: 10/02/2023] [Indexed: 10/10/2023] Open
Abstract
Cognitive development is often thought to depend on qualitative changes in problem-solving strategies, with early developing algorithmic procedures (e.g., counting when adding numbers) considered being replaced by retrieval of associations (e.g., between operands and answers of addition problems) in adults. However, algorithmic procedures might also become automatized with practice. In a large cross-sectional fMRI study from age 8 to adulthood (n = 128), we evaluate this hypothesis by measuring neural changes associated with age-related reductions in a behavioral hallmark of mental addition, the problem-size effect (an increase in solving time as problem sum increases). We found that age-related decreases in problem-size effect were paralleled by age-related increases of activity in a region of the intraparietal sulcus that already supported the problem-size effect in 8- to 9-year-olds, at an age the effect is at least partly due to explicit counting. This developmental effect, which was also observed in the basal ganglia and prefrontal cortex, was restricted to problems with operands ≤ 4. These findings are consistent with a model positing that very-small arithmetic problems-and not larger problems-might rely on an automatization of counting procedures rather than a shift towards retrieval, and suggest a neural automatization of procedural knowledge during cognitive development.
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Affiliation(s)
- Andrea Díaz-Barriga Yáñez
- Centre de Recherche en Neurosciences de Lyon (CRNL), INSERM U1028 - CNRS UMR5292, Université de Lyon, France
| | - Léa Longo
- Centre de Recherche en Neurosciences de Lyon (CRNL), INSERM U1028 - CNRS UMR5292, Université de Lyon, France
| | - Hanna Chesnokova
- Centre de Recherche en Neurosciences de Lyon (CRNL), INSERM U1028 - CNRS UMR5292, Université de Lyon, France
| | - Céline Poletti
- Institut de Psychologie, Université de Lausanne, Switzerland
| | | | - Jérôme Prado
- Centre de Recherche en Neurosciences de Lyon (CRNL), INSERM U1028 - CNRS UMR5292, Université de Lyon, France.
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Burgio F, Filippini N, Weis L, Danesin L, Ferrazzi G, Garon M, Biundo R, Facchini S, Antonini A, Benavides-Varela S, Semenza C, Arcara G. Neurocognitive correlates of numerical abilities in Parkinson’s disease. Neurol Sci 2022; 43:5313-5322. [DOI: 10.1007/s10072-022-06228-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/16/2022] [Indexed: 10/17/2022]
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Howard E, Ballinger S, Kinney NG, Balgenorth Y, Ehrhardt A, Phillips JS, Irwin DJ, Grossman M, Cousins KA. Frontal Atrophy and Executive Dysfunction Relate to Complex Numbers Impairment in Progressive Supranuclear Palsy. J Alzheimers Dis 2022; 88:1553-1566. [PMID: 35811515 PMCID: PMC9915885 DOI: 10.3233/jad-215327] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Previous research finds a range of numbers impairments in Parkinsonian syndromes (PS), but has largely focused on how visuospatial impairments impact deficits in basic numerical processes (e.g., magnitude judgments, chunking). Differentiation between these basic functions and more complex numerical processes often utilized in everyday tasks may help elucidate neurocognitive and neuroanatomic bases of numbers deficits in PS. OBJECTIVE To test neurocognitive and neuroanatomic correlates of complex numerical processing in PS, we assessed number abilities, neuropsychological performance, and cortical thickness in progressive supranuclear palsy (PSP) and Lewy body spectrum disorders (LBSD). METHODS Fifty-six patients (LBSD = 35; PSP = 21) completed a Numbers Battery, including basic and complex numerical tasks. The Mini-Mental State Exam (MMSE), letter fluency (LF), and Judgment of Line Orientation (JOLO) assessed global, executive, and visuospatial functioning respectively. Mann-Whitney U tests compared neuropsychological testing and rank-transformed analysis of covariance (ANCOVA) compared numbers performance between groups while adjusting for demographic variables. Spearman's and partial correlations related numbers performance to neuropsychological tasks. Neuroimaging assessed cortical thickness in disease groups and demographically-matched healthy controls. RESULTS PSP had worse complex numbers performance than LBSD (F = 6.06, p = 0.02) but similar basic numbers performance (F = 0.38, p > 0.1), covarying for MMSE and sex. Across syndromes, impaired complex numbers performance was linked to poor LF (rho = 0.34, p = 0.01) but not JOLO (rho = 0.23, p > 0.05). Imaging revealed significant frontal atrophy in PSP compared to controls, which was associated with worse LF and complex numbers performance. CONCLUSION PSP demonstrated selective impairments in complex numbers processing compared to LBSD. This complex numerical deficit may relate to executive dysfunction and frontal atrophy.
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Affiliation(s)
- Erica Howard
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Samantha Ballinger
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Nikolas G. Kinney
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Yvonne Balgenorth
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Annabess Ehrhardt
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jeffrey S. Phillips
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - David J. Irwin
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Digital Neuropathology Laboratory, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Murray Grossman
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Katheryn A.Q. Cousins
- Department of Neurology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Frontotemporal Degeneration Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA,Correspondence to: Katheryn A.Q. Cousins, PhD, 3400 Spruce St, Department of Neurology, 3W Gates Building, Philadel phia, PA 19104, USA. Tel.: +1 215 349 5863; Fax: +1 215 349 8464;
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Loenneker HD, Artemenko C, Willmes K, Liepelt-Scarfone I, Nuerk HC. Deficits in or preservation of basic number processing in Parkinson's disease? A registered report. J Neurosci Res 2021; 99:2390-2405. [PMID: 34184307 DOI: 10.1002/jnr.24907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 03/02/2021] [Accepted: 03/12/2021] [Indexed: 11/10/2022]
Abstract
Neurodegenerative diseases such as Parkinson's disease (PD) have a huge impact on patients, caregivers, and the health-care system. To date, the diagnosis of mild cognitive impairments in PD has been established based on domain-general functions such as executive functions, attention, or working memory. However, specific numerical deficits observed in clinical practice have not yet been systematically investigated. PD-immanent deterioration of domain-general functions and domain-specific numerical areas suggests the mechanisms of both primary and secondary dyscalculia. The current study will systematically investigate basic number processing performance in PD patients for the first time, targeting domain-specific cognitive representations of numerosity and the influence of domain-general factors. The overall sample consists of patients with a diagnosis of PD, according to consensus guidelines, and healthy controls. PD patients will be stratified into patients with normal cognition or mild cognitive impairment (level I-PD-MCI based on cognitive screening). Basic number processing will be assessed using transcoding, number line estimation, and (non)symbolic number magnitude comparison tasks. Discriminant analysis will be employed to assess whether basic number processing tasks can differentiate between a healthy control group and both PD groups. All participants will be subjected to a comprehensive numerical and a neuropsychological test battery, as well as sociodemographic and clinical measures. Study results will give the first broad insight into the extent of basic numerical deficits in different PD patient groups and will help us to understand the underlying mechanisms of the numerical deficits faced by PD patients in daily life.
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Affiliation(s)
| | - Christina Artemenko
- Department of Psychology, University of Tuebingen, Tuebingen, Germany.,LEAD Graduate School & Research Network, University of Tuebingen, Tuebingen, Germany
| | - Klaus Willmes
- Department of Neurology, RWTH Aachen University, University Hospital, Aachen, Germany
| | - Inga Liepelt-Scarfone
- Department of Clinical Neurodegeneration, Hertie Institute for Clinical Brain Research, Tuebingen, Germany.,German Centre for Neurodegenerative Diseases, Tuebingen, Germany.,IB-Hochschule für Gesundheit und Soziales, Stuttgart, Germany
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Loenneker HD, Becker S, Nussbaum S, Nuerk HC, Liepelt-Scarfone I. Arithmetic Errors in Financial Contexts in Parkinson's Disease. Front Psychol 2021; 12:629984. [PMID: 33935881 PMCID: PMC8079777 DOI: 10.3389/fpsyg.2021.629984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 03/12/2021] [Indexed: 11/29/2022] Open
Abstract
Research on dyscalculia in neurodegenerative diseases is still scarce, despite high impact on patients' independence and activities of daily living function. Most studies address Alzheimer's Disease; however, patients with Parkinson's Disease (PD) also have a higher risk for cognitive impairment while the relation to arithmetic deficits in financial contexts has rarely been studied. Therefore, the current exploratory study investigates deficits in two simple arithmetic tasks in financial contexts administered within the Clinical Dementia Rating in a sample of 100 PD patients. Patients were classified as cognitively normal (PD-NC) or mildly impaired (PD-MCI) according to Level I consensus criteria, and assessed using a comprehensive neuropsychological test battery, neurological motor examination, and sociodemographic and clinical questionnaires. In total, 18% showed arithmetic deficits: they were predominately female, had longer disease duration, more impaired global cognition, but minor signs of depression compared to PD patients without arithmetic deficits. When correcting for clinical and sociodemographic confounders, greater impairments in attention and visuo-spatial/constructional domains predicted occurrence of arithmetic deficits. The type of deficit did not seem to be arbitrary but seemed to involve impaired place × value processing frequently. Our results argue for the importance of further systematic investigations of arithmetic deficits in PD with sensitive tests to confirm the results of our exploratory study that a specific subgroup of PD patients present themselves with dyscalculia.
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Affiliation(s)
- Hannah D. Loenneker
- Department of Psychology, Diagnostics and Cognitive Neuropsychology, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Sara Becker
- Department of Neurodegeneration, Hertie Institute for Clinical Brain Research, Tübingen, Germany
| | - Susanne Nussbaum
- Department of Neurodegeneration, Hertie Institute for Clinical Brain Research, Tübingen, Germany
| | - Hans-Christoph Nuerk
- Department of Psychology, Diagnostics and Cognitive Neuropsychology, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - Inga Liepelt-Scarfone
- Department of Neurodegeneration, Hertie Institute for Clinical Brain Research, Tübingen, Germany
- German Centre for Neurodegenerative Diseases (DZNE), Tübingen, Germany
- IB Hochschule für Gesundheit und Soziales, Stuttgart, Germany
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Asakawa T, Fang H, Sugiyama K, Nozaki T, Kobayashi S, Hong Z, Suzuki K, Mori N, Yang Y, Hua F, Ding G, Wen G, Namba H, Xia Y. Human behavioral assessments in current research of Parkinson's disease. Neurosci Biobehav Rev 2016; 68:741-772. [PMID: 27375277 DOI: 10.1016/j.neubiorev.2016.06.036] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/23/2016] [Accepted: 06/24/2016] [Indexed: 12/22/2022]
Abstract
Parkinson's disease (PD) is traditionally classified as a movement disorder because patients mainly complain about motor symptoms. Recently, non-motor symptoms of PD have been recognized by clinicians and scientists as early signs of PD, and they are detrimental factors in the quality of life in advanced PD patients. It is crucial to comprehensively understand the essence of behavioral assessments, from the simplest measurement of certain symptoms to complex neuropsychological tasks. We have recently reviewed behavioral assessments in PD research with animal models (Asakawa et al., 2016). As a companion volume, this article will systematically review the behavioral assessments of motor and non-motor PD symptoms of human patients in current research. The major aims of this article are: (1) promoting a comparative understanding of various behavioral assessments in terms of the principle and measuring indexes; (2) addressing the major strengths and weaknesses of these behavioral assessments for a better selection of tasks/tests in order to avoid biased conclusions due to inappropriate assessments; and (3) presenting new concepts regarding the development of wearable devices and mobile internet in future assessments. In conclusion we emphasize the importance of improving the assessments for non-motor symptoms because of their complex and unique mechanisms in human PD brains.
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Affiliation(s)
- Tetsuya Asakawa
- Department of Neurosurgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan; Department of Psychiatry, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan.
| | - Huan Fang
- Department of Pharmacy, Jinshan Hospital of Fudan University, Shanghai, China
| | - Kenji Sugiyama
- Department of Neurosurgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Takao Nozaki
- Department of Neurosurgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Susumu Kobayashi
- Department of Neurosurgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Zhen Hong
- Department of Neurology, Huashan Hospital of Fudan University, Shanghai, China
| | - Katsuaki Suzuki
- Department of Psychiatry, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Norio Mori
- Department of Psychiatry, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Yilin Yang
- The First People's Hospital of Changzhou, Soochow University School of Medicine, Changzhou, China
| | - Fei Hua
- The First People's Hospital of Changzhou, Soochow University School of Medicine, Changzhou, China
| | - Guanghong Ding
- Shanghai Key laboratory of Acupuncture Mechanism and Acupoint Function, Fudan University, Shanghai, China
| | - Guoqiang Wen
- Department of Neurology, Hainan General Hospital, Haikou, Hainan, China
| | - Hiroki Namba
- Department of Neurosurgery, Hamamatsu University School of Medicine, Handayama, Hamamatsu-city, Shizuoka, Japan
| | - Ying Xia
- Department of Neurosurgery, The University of Texas McGovern Medical School, Houston, TX 77030, USA.
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Li Y, Pan J, He Y, Wang F, Laureys S, Xie Q, Yu R. Detecting number processing and mental calculation in patients with disorders of consciousness using a hybrid brain-computer interface system. BMC Neurol 2015; 15:259. [PMID: 26670376 PMCID: PMC4681180 DOI: 10.1186/s12883-015-0521-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2015] [Accepted: 12/11/2015] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND For patients with disorders of consciousness such as coma, a vegetative state or a minimally conscious state, one challenge is to detect and assess the residual cognitive functions in their brains. Number processing and mental calculation are important brain functions but are difficult to detect in patients with disorders of consciousness using motor response-based clinical assessment scales such as the Coma Recovery Scale-Revised due to the patients' motor impairments and inability to provide sufficient motor responses for number- and calculation-based communication. METHODS In this study, we presented a hybrid brain-computer interface that combines P300 and steady state visual evoked potentials to detect number processing and mental calculation in Han Chinese patients with disorders of consciousness. Eleven patients with disorders of consciousness who were in a vegetative state (n = 6) or in a minimally conscious state (n = 3) or who emerged from a minimally conscious state (n = 2) participated in the brain-computer interface-based experiment. During the experiment, the patients with disorders of consciousness were instructed to perform three tasks, i.e., number recognition, number comparison, and mental calculation, including addition and subtraction. In each experimental trial, an arithmetic problem was first presented. Next, two number buttons, only one of which was the correct answer to the problem, flickered at different frequencies to evoke steady state visual evoked potentials, while the frames of the two buttons flashed in a random order to evoke P300 potentials. The patients needed to focus on the target number button (the correct answer). Finally, the brain-computer interface system detected P300 and steady state visual evoked potentials to determine the button to which the patients attended, further presenting the results as feedback. RESULTS Two of the six patients who were in a vegetative state, one of the three patients who were in a minimally conscious state, and the two patients that emerged from a minimally conscious state achieved accuracies significantly greater than the chance level. Furthermore, P300 potentials and steady state visual evoked potentials were observed in the electroencephalography signals from the five patients. CONCLUSIONS Number processing and arithmetic abilities as well as command following were demonstrated in the five patients. Furthermore, our results suggested that through brain-computer interface systems, many cognitive experiments may be conducted in patients with disorders of consciousness, although they cannot provide sufficient behavioral responses.
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Affiliation(s)
- Yuanqing Li
- Center for Brain Computer Interfaces and Brain Information Processing, South China University of Technology, Guangzhou, 510640, China.
- Guangzhou Key Laboratory of Brain Computer Interaction and Applications, Guangzhou, China.
| | - Jiahui Pan
- School of Software, South China Normal University, Guangzhou, 510641, China
| | - Yanbin He
- Guangzhou Key Laboratory of Brain Computer Interaction and Applications, Guangzhou, China
- Coma Research Group, Centre for Hyperbaric Oxygen and Neurorehabilitation, General Hospital of Guangzhou Military Command of People's Liberation Army, Guangzhou, 510010, China
| | - Fei Wang
- Center for Brain Computer Interfaces and Brain Information Processing, South China University of Technology, Guangzhou, 510640, China
- Guangzhou Key Laboratory of Brain Computer Interaction and Applications, Guangzhou, China
| | - Steven Laureys
- Coma Science Group, Cyclotron Research Centre and Neurology Department, University and University Hospital of Liège, 4000, Liège, Belgium
| | - Qiuyou Xie
- Guangzhou Key Laboratory of Brain Computer Interaction and Applications, Guangzhou, China
- Coma Research Group, Centre for Hyperbaric Oxygen and Neurorehabilitation, General Hospital of Guangzhou Military Command of People's Liberation Army, Guangzhou, 510010, China
| | - Ronghao Yu
- Guangzhou Key Laboratory of Brain Computer Interaction and Applications, Guangzhou, China.
- Coma Research Group, Centre for Hyperbaric Oxygen and Neurorehabilitation, General Hospital of Guangzhou Military Command of People's Liberation Army, Guangzhou, 510010, China.
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Anatomical substrates and neurocognitive predictors of daily numerical abilities in mild cognitive impairment. Cortex 2015; 71:58-67. [DOI: 10.1016/j.cortex.2015.05.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 04/10/2015] [Accepted: 05/29/2015] [Indexed: 12/13/2022]
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12
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Effects of Mental Flexibility and Motor Dysfunction on Cognitive Performance in Patients With Parkinson's Disease. ARCHIVES OF NEUROSCIENCE 2015. [DOI: 10.5812/archneurosci.21087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Robertson BD, Hiebert NM, Seergobin KN, Owen AM, MacDonald PA. Dorsal striatum mediates cognitive control, not cognitive effort per se , in decision-making: An event-related fMRI study. Neuroimage 2015; 114:170-84. [DOI: 10.1016/j.neuroimage.2015.03.082] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 03/20/2015] [Accepted: 03/28/2015] [Indexed: 10/23/2022] Open
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Besnard J, Allain P, Aubin G, Chauviré V, Etcharry-Bouyx F, Le Gall D. An integrative view of Luria's perspective on arithmetic problem solving: the two sides of environmental dependency. J Clin Exp Neuropsychol 2014; 36:88-109. [PMID: 24392726 DOI: 10.1080/13803395.2013.870135] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
INTRODUCTION A. R. Luria was the first author to hypothesize that executive dysfunction can lead to specific deficits in arithmetic problem solving, showing that patients' performance depends on the structure of the tasks. Cummings (1995. Anatomic and behavioral aspects of frontal-subcortical circuits. Annals of the New York Academy of Sciences, 15, 1-13) proposed the term "environmental dependency" to define such behavioral disorders triggered by the characteristics of the test and pointed out also the role of executive impairments. Few studies compare executive functioning and problem solving in brain-damaged patients, and none have examined the question from this point of view. Thus, the main aim of the present paper was to study the relationship between environmental dependency and executive functions. METHOD Fifty neurological patients with frontal, subcortical, and posterior brain lesions were compared to 45 matched healthy controls and were divided into two groups (dysexecutive/nondysexecutive) according to their performances on executive tasks. Then, we confronted the results of the two groups on an experimental protocol designed in accordance with Luria's proposals. We made also comparisons between groups on the basis of lesion location. RESULTS Our findings indicate a high association between executive functions and environmental dependency, showing that dysexecutive patients' performances were dependent on task demands. In addition, a specific frontal behavior not associated with executive functions and characterized by the solving of insoluble problems was highlighted. CONCLUSION The discussion focused on the interest to take into account the methodological and clinical contributions of environmental dependency. Based on our findings and theoretical arguments, we highlight the need to fractionate this concept.
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Affiliation(s)
- Jérémy Besnard
- a LUNAM Université, Laboratoire de Psychologie des Pays de la Loire (UPRES EA 4638), University of Angers , France
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15
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Florin E, Müller D, Pfeifer J, Barbe MT, Fink GR, Timmermann L. Subthalamic stimulation modulates self-estimation of patients with Parkinson's disease and induces risk-seeking behaviour. ACTA ACUST UNITED AC 2013; 136:3271-81. [PMID: 24071530 DOI: 10.1093/brain/awt241] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Patients with Parkinson's disease with deep brain stimulation in the subthalamic nucleus postoperatively often display higher impulsivity and therefore may experience difficulties in social interactions. Here, we examined social interactions of patients with Parkinson's disease with and without deep brain stimulation in the subthalamic nucleus in competitive situations. We hypothesized altered self-estimation and risk-seeking behaviour in this patient group induced by deep brain stimulation in the subthalamic nucleus. To test the hypothesis, an experimental setting was used in which participants performed a calculation task and chose their preferred compensation. Based on their actual calculation performance, more patients with Parkinson's disease with deep brain stimulation chose a competitive tournament compensation. Assuming rational behaviour, this self-selection pattern reflects increased risk tolerance. Since patients who performed in the lowest quartile chose the tournament option, the data suggest that deep brain stimulation in the subthalamic nucleus results in a loss of the correct reference frame against which patients with Parkinson's disease evaluate their performance. The stimulation-induced combination of overestimation of their own performance, increased risk-taking, and preference for competitive environments despite poor performance is likely to impact considerably on the patients' social and work life.
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Affiliation(s)
- Esther Florin
- 1 Department of Neurology, University Hospital Cologne, Germany
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Semenza C, Bonollo S, Polli R, Busana C, Pignatti R, Iuculano T, Maria Laverda A, Priftis K, Murgia A. Genetics and mathematics: FMR1 premutation female carriers. Neuropsychologia 2012; 50:3757-63. [DOI: 10.1016/j.neuropsychologia.2012.10.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 10/10/2012] [Accepted: 10/24/2012] [Indexed: 01/06/2023]
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17
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Palmieri A, Sorarù G, D'Ascenzo C, Balestreri S, Arcara G, Ermani M, Pegoraro E, Semenza C. Specific numerical processing impairment in ALS patients. Amyotroph Lateral Scler Frontotemporal Degener 2012; 14:6-12. [DOI: 10.3109/17482968.2012.719235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Dormal V, Grade S, Mormont E, Pesenti M. Dissociation between numerosity and duration processing in aging and early Parkinson's disease. Neuropsychologia 2012; 50:2365-70. [DOI: 10.1016/j.neuropsychologia.2012.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 06/06/2012] [Accepted: 06/11/2012] [Indexed: 10/28/2022]
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Toll SWM, Van der Ven SHG, Kroesbergen EH, Van Luit JEH. Executive functions as predictors of math learning disabilities. JOURNAL OF LEARNING DISABILITIES 2011; 44:521-532. [PMID: 21177978 DOI: 10.1177/0022219410387302] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In the past years, an increasing number of studies have investigated executive functions as predictors of individual differences in mathematical abilities. The present longitudinal study was designed to investigate whether the executive functions shifting, inhibition, and working memory differ between low achieving and typically achieving children and whether these executive functions can be seen as precursors to math learning disabilities in children. Furthermore, the predictive value of working memory ability compared to preparatory mathematical abilities was examined. Two classifications were made based on (persistent) mathematical ability in first and second grade. Repeated measures analyses and discriminant analyses were used to investigate which functions predicted group membership best. Group differences in performance were found on one inhibition and three working memory tasks. The working memory tasks predicted math learning disabilities, even over and above the predictive value of preparatory mathematical abilities.
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Affiliation(s)
- Sylke W M Toll
- Department of Pedagogical and Educational Sciences, Utrecht University, Utrecht, The Netherlands.
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20
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Characteristics of executive function impairment in Parkinson's disease patients without dementia. J Int Neuropsychol Soc 2010; 16:268-77. [PMID: 20003582 DOI: 10.1017/s1355617709991299] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Executive function impairments in Parkinson's disease (PD) are well documented. However, uncertainties remain regarding the impact of these deficits on other areas of cognitive functioning. The goal of this study was to provide a comprehensive assessment of cognitive characteristics in patients with PD without dementia and to assess how any such deficits affected other areas of cognitive functioning. Forty PD patients without dementia were compared to healthy controls using measures of attention and speed of processing and a comprehensive set of executive function tests including working memory, planning, and problem solving. Measures of memory/learning and visuospatial skills were also included to examine the relationship between aspects of executive function and other areas of cognition. Patients with PD showed deficits on measures of executive function, problem solving, and visuospatial skills. However, they were unimpaired on measures of planning, attention, and memory/learning. Deficits in problem solving were only evident for tasks with a high visuospatial content and were no longer significant when visuospatial skills were controlled for. While deficits in executive function and visuospatial skills were apparent for PD patients compared to controls, many aspects of cognition remained intact. These can provide a focus for cognitive intervention strategies that can be effective in delaying decline for PD patients.
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Goebel S, Mehdorn HM, Leplow B. Strategy instruction in Parkinson's disease: influence on cognitive performance. Neuropsychologia 2009; 48:574-80. [PMID: 19879884 DOI: 10.1016/j.neuropsychologia.2009.10.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 10/19/2009] [Accepted: 10/21/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Though strategic deficits are extensively investigated in Parkinson's disease (PD), little is known about the effects of instruction for PD patients. Thus, we compared the ability to internally generate a cognitive strategy with the ability to use a strategy after elaborate strategy instruction. METHODS Patients with PD (n=14) and matched healthy controls (n=22) were administered a Numerosity Judgement task in which they had to determine different numerosities of blocks presented in a square grid. In more complex task configurations, healthy participants tend to use a subtraction strategy. Participants in our study were confronted with a counting condition (A), a strategy initiation condition without instruction (B), and a strategy elaboration and strategy training condition (C). RESULTS Patients and controls were comparable with respect to basic cognitive measures. PD patients and controls performed equivalently within the counting condition (A), but patients needed significantly more trials to initiate the subtraction strategy. With the exception of 1 PD patient, all patients were able to internally initiate the strategy (condition B). In condition C, both groups increased reaction times, but patients were significantly slower than controls. Moreover, only patients significantly increased error rates after strategy instruction. CONCLUSION As long as sufficient time is provided for solving the task, results do not show a general deficit in the ability to internally generate a cognitive strategy in PD. Failures in strategy utilization strongly depend on cognitive load (working memory, executive functions). This bears important implications for the neuropsychological rehabilitation of PD patients.
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Affiliation(s)
- Simone Goebel
- Department of Neurosurgery, University Hospital Schleswig-Holstein, Kiel, Germany.
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Zamarian L, Bodner T, Revkin SK, Benke T, Boesch S, Donnemiller E, Delazer M. Numerical deficits in a single case of basal ganglia dysfunction. Neurocase 2009; 15:390-404. [PMID: 19370479 DOI: 10.1080/13554790902849156] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The present investigation assesses specific numerical difficulties in a patient (SJ) with basal ganglia (BG) dysfunction. While previous studies on number processing in BG disorders typically tested arithmetic facts by production tasks, the present study uses production, recognition (verification, multiple-choice) and indirect (number-matching) arithmetic tasks. Patient SJ was severely impaired in production and to a lesser extent in verification and multiple-choice tasks. In number-matching, an abnormal latency pattern was found. This study extends previous research by indicating that BG dysfunction may not only affect production processes and sequencing, as was found in previous investigations, but may lead to a breakdown of semantic relationships of arithmetic facts.
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Affiliation(s)
- L Zamarian
- Clinic of Neurology, Medical University Innsbruck, Austria.
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23
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The role of strategies in deciding advantageously in ambiguous and risky situations. Cogn Process 2008; 9:159-73. [PMID: 18231817 DOI: 10.1007/s10339-008-0204-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Revised: 09/25/2007] [Accepted: 01/11/2008] [Indexed: 10/22/2022]
Abstract
In decision situations of everyday life, the potential positive or negative consequences of a decision are often specified and the associated probabilities are known or they are principally calculable ("decisions under risk"). On the basis of correlations reported in patient studies, it has been recently proposed that decisions under risk involve strategic components, i.e. calculation of the risk, as well as emotional processes, i.e. processing feedback from previous decisions. However, the potential impact of calculative strategies on decision-making under risk has not been investigated systematically, so far. In the current study, we examined 42 healthy subjects (21 females) with the Game of Dice Task measuring decisions under risk, and a questionnaire assessing strategy application in items comparable to the choices in the Game of Dice Task. In addition, the subjects performed the Iowa Gambling Task, examining decision-making under ambiguity, and a neuropsychological test battery focusing on executive functions. Results indicate that deciding advantageously in a decision-making task with explicit and stable rules is linked to applying calculative strategies. In contrast, individuals who decide intuitively prefer risky or disadvantageous choices in the Game of Dice Task. Applying calculative strategies was correlated with executive functions but not with performance on the Iowa Gambling Task. The results support the view that calculative processes and strategies may improve decision-making under explicit risk conditions.
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Zamarian L, Semenza C, Domahs F, Benke T, Delazer M. Alzheimer's disease and mild cognitive impairment: Effects of shifting and interference in simple arithmetic. J Neurol Sci 2007; 263:79-88. [PMID: 17628603 DOI: 10.1016/j.jns.2007.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2006] [Revised: 06/06/2007] [Accepted: 06/08/2007] [Indexed: 11/20/2022]
Abstract
The present study investigated arithmetic processing in patients with mild dementia of Alzheimer's type (DAT) and patients with mild cognitive impairment (MCI) without dementia. Arithmetic processing (e.g., 2+3=?, 3 x 4=?) was evaluated in (1) 'blocked' condition (without extra load on attentional and executive functions), in (2) 'mixed' condition (shifting between different operations was required), and in (3) 'Stroop-like' condition (executive control and inhibition of automatic retrieval processes were needed). Both DAT and MCI patients showed intact arithmetic knowledge retrieval from long-term memory in the blocked condition. However, DAT patients were compromised whenever load was put on executive functions, whereas MCI patients succeeded to shift between operations (mixed condition) but had difficulties to inhibit overlearned associations (Stroop-like condition). In line with previous studies, these findings point to the contribution of attentional and executive functions in arithmetic. The present investigation is also of clinical relevance: it suggests that it may be important to assess arithmetic processing not only in blocked presentation but also in mixed presentation. The mixed condition has a high ecological value because it mimics daily-life arithmetic activities (e.g., checking the grocery bill). As indicated by the present results, DAT and MCI patients who are in the normal range at routine neuropsychological (blocked) arithmetic assessments may experience difficulties by extra requirement of non-numerical resources. That means, they possibly process arithmetic not efficiently in daily-life situations.
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Affiliation(s)
- Laura Zamarian
- Clinical Department of Neurology, Innsbruck Medical University, Anichstrasse 35, 6020 Innsbruck, Austria.
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Zamarian L, Stadelmann E, Nürk HC, Gamboz N, Marksteiner J, Delazer M. Effects of age and mild cognitive impairment on direct and indirect access to arithmetic knowledge. Neuropsychologia 2007; 45:1511-21. [PMID: 17194465 DOI: 10.1016/j.neuropsychologia.2006.11.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2006] [Revised: 11/24/2006] [Accepted: 11/24/2006] [Indexed: 10/23/2022]
Abstract
The present study aimed at investigating age-related changes and mild cognitive impairment (MCI) related effects in simple arithmetic. To pursue this goal, MCI patients, healthy old adults and young adults performed three computerised tasks. The production (e.g., 3 x 4=?) and the verification task (3 x 4 12?) evaluated direct access to multiplication knowledge, the number-matching task (3 x 4 34?, 'do 3 x 4 and 34 have the same digits?') tested indirect access. In verification and number-matching, interference from related distractors (e.g., 3 x 4 followed by 16) relative to unrelated distractors (17) reflects access to stored fact representations as well as efficiency of inhibition processes. Results indicated that, compared to young adults, MCI and healthy old adults were slower in responding across tasks. In production and verification, analyses of individual latency regression slopes and intercepts suggested that these age effects were related to differences at peripheral processing stages (e.g., encoding) rather than at the central (arithmetic retrieval) stage. Differences between MCI and healthy elderly emerged only in the number-matching task. While in verification effects were comparable between groups, in number-matching MCI patients were more susceptible to interference from irrelevant information than healthy old participants. Overall, the present findings indicate that aging has a general effect on peripheral processing speed, but not on arithmetic memory retrieval. Parietal cortico-subcortical circuits mediating arithmetic fact retrieval (Dehaene, S., & Cohen, L. (1995). Towards an anatomical and functional model of number processing. Mathematical Cognition, 1, 83-120; Dehaene, S., & Cohen, L. (1997). Cerebral pathways for calculation: Double dissociation between rote verbal and quantitative knowledge of arithmetic. Cortex, 33, 219-250) thus seem to be preserved in normal aging and MCI. In contrast, MCI patients show enhanced interference in number-matching. This task-specific lack of inhibition may point to dysfunctional frontal cortico-subcortical networks in MCI.
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Affiliation(s)
- L Zamarian
- University of Trieste, Psychology Department, Trieste, Italy.
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