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Cogné É, Postuma RB, Chasles MJ, De Roy J, Montplaisir J, Pelletier A, Rouleau I, Gagnon JF. Montreal Cognitive Assessment and the Clock Drawing Test to Identify MCI and Predict Dementia in Isolated REM Sleep Behavior Disorder. Neurology 2024; 102:e208020. [PMID: 38271662 DOI: 10.1212/wnl.0000000000208020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 10/03/2023] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Patients with isolated/idiopathic REM sleep behavior disorder (iRBD) are at high risk for developing mild cognitive impairment (MCI) and dementia with Lewy bodies (DLB). However, there is a lack of scientific knowledge regarding the accuracy of cognitive screening tools to identify these conditions in iRBD. This study aimed to determine in iRBD the psychometrics of 2 screening tests to discriminate patients with MCI and those at risk of DLB. METHODS We retrospectively selected and followed 64 patients with polysomnography-confirmed iRBD seen in sleep clinic between 2006 and 2021, 32 with MCI (mean age 68.44 years, 72% men), 32 without MCI (67.78 years, 66% men), and 32 controls (69.84 years, 47% men). Participants underwent a neurologic evaluation and neuropsychological assessment for MCI diagnosis. They also completed the Montreal Cognitive Assessment (MoCA) and Clock Drawing Test (CDT). Fifty-three patients were followed (mean of 5.10 ± 2.64 years); 6 developed DLB, and 16 developed Parkinson disease. An independent cohort of 10 patients with iRBD who later developed DLB was also recruited and followed. Receiver operating characteristic curves with area under the curve (AUC) were performed assessing the discriminant value of the MoCA and CDT. RESULTS The cut-off values that best differentiated patients who developed DLB from controls were on the MoCA total score (≤25/30 with 100% [95% CI 61%-100%] sensitivity and 78% [61%-89%] specificity, AUC = 0.888) and delayed recall (≤3/5 with 83% [44%-97%] sensitivity and 78% [61%-89%] specificity, AUC = 0.875). Both values yielded a sensitivity of 90% (60%-98%) to detect patients at risk of DLB in the independent cohort. Cutoffs that best discriminated patients with MCI from controls were: ≤25/30 (MoCA total score) with 72% [55%-84%] sensitivity, 78% [61%-89%] specificity, AUC = 0.803 and ≤2/5 (MoCA delayed recall) with 63% [45%-77%] sensitivity, 94% [80%-98%] specificity, AUC = 0.843. No acceptable optimal values were found for the CDT. DISCUSSION In iRBD, the MoCA demonstrates adequate psychometric properties to identify patients most at risk of developing DLB and to screen for MCI, whereas the CDT does not. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that the MoCA, but not the CDT, is useful in screening patients with iRBD for the risk of developing DLB.
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Affiliation(s)
- Émile Cogné
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Ronald B Postuma
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Marie-Joëlle Chasles
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Jessie De Roy
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Jacques Montplaisir
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Amélie Pelletier
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Isabelle Rouleau
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
| | - Jean-François Gagnon
- From the Department of Psychology (É.C., M.-J.C., J.D.R., I.R., J.-F.G.), Université du Québec à Montréal; Centre for Advanced Research in Sleep Medicine (É.C., R.P., J.D.R., J.M., A.P., J.-F.G.), Hôpital du Sacré-Cœur de Montréal; Department of Neurology (R.P.), Montreal Neurological Institute; Centre de Recherche du CHUM (M.-J.C., I.R.), Montreal, and Department of Psychiatry (J.M.), Université de Montréal, Quebec, Canada
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Van Regemorter V, Coulie R, Dollase J, Momeni M, Stouffs A, Quenon L, Mouraux A, Huart C. Poor preoperative performance at Clock Drawing Test is associated with postoperative decline in olfaction in older patients: an observational pilot study. BMC Anesthesiol 2023; 23:295. [PMID: 37648990 PMCID: PMC10468858 DOI: 10.1186/s12871-023-02256-0] [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: 06/12/2023] [Accepted: 08/24/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Decline in olfaction may occur after general anesthesia, but the exact incidence and underlying physiopathology remain scarcely investigated. Olfactory dysfunction arises with aging and is known to be linked to cognitive impairment. In this pilot study, we evaluated the incidence of immediate postoperative decline in olfaction and its association with a preoperative cognitive test, performance at Clock Drawing Test (CDT), in a group of older patients. METHODS This pilot study is a sub-analysis of a prospective observational study. Patients ≥ 65 years old and scheduled for elective non-cardiac surgery under sevoflurane-based anesthesia were enrolled. CDT was part of the preoperative evaluation. We assessed olfaction on the day before and the day after surgery (between 16 and 26 h postoperatively) using the Sniffin' Sticks 12-item identification test, which consists of pen-like devices displaying 12 different odors. Postoperative decline in olfaction was defined as a decrease of at least 1 standard deviation in the olfactory score. RESULTS We included a total of 93 patients, among whom 19 (20.4%) presented a postoperative decline in olfaction. The incidence of postoperative decline in olfaction was higher in the "CDT low-score" (score ≤ 5/8) group (11/34, 32.4%) than in the "CDT high-score" (score ≥ 6/8) group (8/58, 13.6%) (P = 0.030). Despite adjusting for confounding variables, CDT score remained independently associated with immediate postoperative decline in olfactory identification function (OR 0.67, 95% CI 0.48 to 0.94, P = 0.022). CONCLUSIONS Postoperative decline in olfaction occurred in 20.4% of older patients and was associated with poor preoperative performance at CDT. TRIAL REGISTRATION This study was retrospectively registered on https://clinicaltrials.gov/ under the NCT04700891 number (principal investigator: Victoria Van Regemorter), in December 2020.
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Affiliation(s)
- Victoria Van Regemorter
- Department of Anesthesiology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium.
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium.
| | - Richard Coulie
- Department of Anesthesiology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Jordi Dollase
- Department of Anesthesiology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium
| | - Mona Momeni
- Department of Anesthesiology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200, Brussels, Belgium
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - Alexandre Stouffs
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - Lisa Quenon
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Department of Neurology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - André Mouraux
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
| | - Caroline Huart
- Institute of Neuroscience, Université catholique de Louvain, Brussels, Belgium
- Department of Otorhinolaryngology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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Hudon C, St-Hilaire A, Landry M, Belzile F, Macoir J. Normative data for the Tower of London (Drexel version) in the Quebec-French population aged between 50 and 88 years. APPLIED NEUROPSYCHOLOGY. ADULT 2023:1-7. [PMID: 37378493 DOI: 10.1080/23279095.2023.2227382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
The Tower of London (ToL) is a neuropsychological test used to assess several executive functions such as strategical reasoning, mental planning, and problem-solving. Like other cognitive tests, performance on the ToL can vary according to age, level of education, sex, and cultural background of individuals. The present study aimed to establish normative data for the Drexel version of the ToL among French-Quebec people aged 50 years and over. The normative sample consisted of 174 healthy individuals aged 50-88 years, all from the province of Quebec, Canada. Analyses were performed to estimate the associations between age, sex, and education level on one hand, and ToL performance, on the other hand. Results indicated that Total Execution Time was associated with age, whereas the Total Type II Errors and Total Rule Violation score (Type I + II Errors) were associated with both age and education level. All other scores were not significantly associated with the demographic characteristics of the participants. Since the distributions of the data were all skewed, the normative data are presented in the form of percentile ranks. To conclude, the present norms will ease the detection of executive impairments in French-Quebec middle-aged and older adults.
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Affiliation(s)
- Carol Hudon
- École de psychologie, Université Laval, Québec, Canada
- Centre de recherche CERVO, Québec, Canada
- Centre de recherche VITAM, Québec, Canada
| | - Alexandre St-Hilaire
- Institut universitaire en santé mentale de Québec, Centre intégré universitaire de santé et de services sociaux de la Capitale-Nationale, Québec, Canada
| | - Mariane Landry
- École de psychologie, Université Laval, Québec, Canada
- Centre de recherche CERVO, Québec, Canada
| | - Florence Belzile
- École de psychologie, Université Laval, Québec, Canada
- Centre de recherche CERVO, Québec, Canada
| | - Joël Macoir
- Centre de recherche CERVO, Québec, Canada
- Département de réadaptation, Université Laval, Québec, Canada
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[Revue systématique des tests cognitifs validés et/ou ayant des normes de référence pour la population canadienne francophone âgée]. Can J Aging 2022; 42:297-315. [PMID: 36120908 DOI: 10.1017/s0714980822000319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Il est essentiel d'utiliser des tests cognitifs ayant été validés et détenant des normes de référence auprès de la population cible, puisque les réalités culturelles et linguistiques différentes entre l'échantillon de validation ou auprès duquel les normes ont été créées et la population cible peuvent affecter les résultats. Cette revue systématique vise à recenser et décrire les tests cognitifs (incluant tests, questionnaires et grilles d'observation) validés et/ou présentant des normes sur la population âgée canadienne francophone. Au total, 46 articles ont été sélectionnés. Cette revue recense 9 tests validés, 20 tests avec normes de référence et 18 tests validés et avec normes, couvrant la majorité des domaines cognitifs (fonctions mnésiques, attentionnelles, exécutives, perceptivo-motrices et langagières), excepté la cognition sociale. La quasi-totalité des échantillons ont été recrutés au Québec. Les tests relevés présentent majoritairement des indices psychométriques satisfaisants et généralement des normes considérant l'âge, le sexe et l'éducation. Cette revue systématique permettra aux cliniciens et chercheurs canadiens en vieillissement d'orienter optimalement leurs choix de tests cognitifs.
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Lajeunesse A, Potvin MJ, Labelle V, Chasles MJ, Kergoat MJ, Villalpando JM, Joubert S, Rouleau I. Effectiveness of a Visual Imagery Training Program to Improve Prospective Memory in Older Adults with and without Mild Cognitive Impairment: A Randomized Controlled Study. Neuropsychol Rehabil 2021; 32:1576-1604. [PMID: 33947319 DOI: 10.1080/09602011.2021.1919529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Prospective memory (PM) problems in aging and, to a greater extent, in mild cognitive impairment (MCI), compromise functional independence. This study examined the effectiveness of a cognitive training program based on visual imagery to improve PM among older adults with and without MCI. Participants were older adults, 24 with MCI and 24 cognitively healthy (HOA). Half of them (12 MCI and 12 HOA) were randomly assigned to the PM training program, the other half to the no-training control group. All participants also completed a pre- and post-test evaluation, including neuropsychological tests, questionnaires, and the Ecological Test of Prospective Memory (TEMP). There was no significant effect of the intervention on the TEMP total, event-based or time-based scores for either the MCI or HOA groups. However, the trained MCI group committed fewer false alarms (i.e., more efficient identification of prospective cues) in the event-based condition of the TEMP at post-test. On the other hand, all trained participants performed better than control participants on retrospective memory tests, which suggests that visual imagery-based training is more effective to improve retrospective memory than PM. Possible explanations for these results are explored.
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Affiliation(s)
- Ariane Lajeunesse
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.,Research Center, Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - Marie-Julie Potvin
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada.,Neurotraumatology Program, Hôpital du Sacré-Cœur de Montréal, Montreal, Canada
| | - Véronique Labelle
- Centre de services ambulatoires en santé mentale et de réadaptation en dépendance de Charlemagne, CISSS de Lanaudière, Charlemagne, Canada
| | - Marie-Joëlle Chasles
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - Marie-Jeanne Kergoat
- Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.,Department of Medicine, Université de Montréal, Montreal, Canada
| | - Juan Manuel Villalpando
- Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.,Department of Medicine, Université de Montréal, Montreal, Canada
| | - Sven Joubert
- Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.,Department of Psychology, Université de Montréal, Montreal, Canada
| | - Isabelle Rouleau
- Department of Psychology, Université du Québec à Montréal, Montreal, Canada.,Research Center, Centre Hospitalier de l'Université de Montréal, Montreal, Canada
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von Siebenthal A, Descloux V, Borgognon C, Massardi T, Zumbach S. Evolution of Capgras syndrome in neurodegenerative disease: the multiplication phenomenon. Neurocase 2021; 27:160-164. [PMID: 33856966 DOI: 10.1080/13554794.2021.1905850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Capgras syndrome (CS) is a delusional misidentification syndrome that is encountered in various pathologies. Here, we report the case of an 83-year-old woman affected by dementia with Lewy bodies who presented a CS during the disease. The neuropsychological assessment showed executive and face processing deficits. In this case, CS was characterized, in the beginning, by the duplication of a relative and then by its multiplication. To our knowledge, the description of the evolution of a CS in the course of a neurodegenerative disease is rare and we discuss this multiplication phenomenon in light of existing models of delusions.
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Affiliation(s)
- Aline von Siebenthal
- Secteur de Psychiatrie Et de Psychothérapie de La Personne Âgée, Réseau Fribourgeois de Santé Mentale, Marsens, Switzerland.,Unité de Neuropsychologie, Hôpitaux Fribourgeois, Billens, Switzerland
| | - Virginie Descloux
- Unité de Neuropsychologie, Hôpitaux Fribourgeois, Billens, Switzerland.,Faculté de Psychologie Et des Sciences de l'Education, University of Geneva, Geneva, Switzerland
| | - Christel Borgognon
- Secteur de Psychiatrie Et de Psychothérapie de La Personne Âgée, Réseau Fribourgeois de Santé Mentale, Marsens, Switzerland
| | - Tatiana Massardi
- Secteur de Psychiatrie Et de Psychothérapie de La Personne Âgée, Réseau Fribourgeois de Santé Mentale, Marsens, Switzerland
| | - Serge Zumbach
- Secteur de Psychiatrie Et de Psychothérapie de La Personne Âgée, Réseau Fribourgeois de Santé Mentale, Marsens, Switzerland
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Shao K, Dong FM, Guo SZ, Wang W, Zhao ZM, Yang YM, Wang PP, Wang JH. Clock-drawing test: Normative data of three quantitative scoring methods for Chinese-speaking adults in Shijiazhuang City and clinical utility in patients with acute ischemic stroke. Brain Behav 2020; 10:e01806. [PMID: 32856405 PMCID: PMC7667341 DOI: 10.1002/brb3.1806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/31/2020] [Accepted: 08/04/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE The clock-drawing test (CDT) is a widely used screening tool for detecting cognitive decline. However, normative data for Chinese individuals are scarce. Our study aimed to provide standardized values for the three quantitative CDT scoring methods that were tailored for Chinese-speaking adults in Shijiazhuang City and explore the discriminant validity of the CDT scores in patients with acute ischemic stroke. METHODS We conducted the CDT among 418 healthy individuals aged between 35 and 84 years. The CDT was administered and scored by five raters using the method derived from the Montreal Cognitive Assessment (MoCA), Rouleau's, and Babins' scoring systems. The influence of age, education, and sex on the performance in the CDT was analyzed. Furthermore, 336 patients with acute ischemic stroke were enrolled to explore the discriminant validity of CDT scores. RESULTS In all three scoring systems, CDT scores were significantly correlated with age and years of education but not with sex. Normative data stratified for age and years of education were established. Interrater and intersystem reliability were high in our study. CDT total scores and subscores showed significant differences between stroke patients and healthy individuals. CONCLUSIONS Our study provides CDT normative data using three quantitative scoring methods for Chinese-speaking adults in Shijiazhuang City. Age and education level were the key factors that affected the CDT scores. CDT total scores and subscores provided good discriminant validity for patients with acute ischemic stroke.
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Affiliation(s)
- Kai Shao
- Department of Graduate College, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Fang-Ming Dong
- Department of Graduate College, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Shang-Zun Guo
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China.,Department of Graduate College, Hebei North University, Zhangjiakou, China
| | - Wei Wang
- Department of Graduate College, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Zhong-Min Zhao
- Department of Graduate College, Hebei Medical University, Shijiazhuang, China.,Department of Neurology, Hebei General Hospital, Shijiazhuang, China
| | - Yi-Ming Yang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China.,Department of Graduate College, Hebei North University, Zhangjiakou, China
| | - Pan-Pan Wang
- Department of Electromyography, Hebei General Hospital, Shijiazhuang, China
| | - Jian-Hua Wang
- Department of Neurology, Hebei General Hospital, Shijiazhuang, China
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Lajeunesse A, Potvin MJ, Labelle V, Joubert S, Rouleau I. Characterization of prospective memory in mild cognitive impairment by using the Ecological test of Prospective Memory. AGING NEUROPSYCHOLOGY AND COGNITION 2020; 28:367-391. [DOI: 10.1080/13825585.2020.1772192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Ariane Lajeunesse
- Department of Psychology, Université Du Québec À Montréal, Montreal, Canada
- Research Center, Institut De Gériatrie De Montréal, Montreal, Canada
- Research Center, Centre Hospitalier De l’Université De Montréal, Montreal, Canada
| | - Marie-Julie Potvin
- Neurotraumatology program, Hôpital Du Sacré-Cœur De Montréal, Montreal, Canada
| | - Véronique Labelle
- Centre de services ambulatoires en santé mentale et de réadaptation en dépendance de Charlemagne, CISSS de Lanaudière, Charlemagne, Canada
| | - Sven Joubert
- Research Center, Institut De Gériatrie De Montréal, Montreal, Canada
- Department of Psychology, Université De Montréal, Montreal, Canada
| | - Isabelle Rouleau
- Department of Psychology, Université Du Québec À Montréal, Montreal, Canada
- Research Center, Centre Hospitalier De l’Université De Montréal, Montreal, Canada
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9
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The Impairment of Number Transcoding Abilities in Individuals with Amnestic Mild Cognitive Impairment and Alzheimer Disease: Associations With Attentional and Executive Functions. Cogn Behav Neurol 2020; 33:33-44. [PMID: 32132401 DOI: 10.1097/wnn.0000000000000225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Studies have shown that number transcoding abilities (ie, translating numbers from one numerical code to another) are affected early in the development of Alzheimer disease (AD). However, no study has extensively explored how these abilities are affected in individuals with mild cognitive impairment (MCI). OBJECTIVE To determine the contribution that number transcoding tasks make to the identification of MCI, and to pinpoint the cognitive correlates of performance in these tasks. METHODS We compared the performance of 20 individuals with the amnestic subtype of MCI, eight individuals with AD, and 20 healthy controls on three number transcoding tasks. RESULTS The results confirmed the presence of number transcoding impairment in the individuals with AD. The individuals with MCI were found to be impaired in two of the transcoding tasks; these individuals produced perseverations of the input code-the most noteworthy error type in individuals with AD. In addition, the relationship between impairment in attentional and executive functions and impairment in number transcoding was supported by the correlational analyses. CONCLUSIONS This study confirmed that number transcoding abilities are impaired in individuals with MCI, although less severely than in individuals with AD. Our results provide evidence for the clinical value of including number transcoding tasks in the assessment of cognitive deficits associated with pathological aging.
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Shanhu X, Linhui C, Xiaoqing J, Jing Y, Saizhu X, Ying X, Caixia L, Yu J. Effects of age and education on clock-drawing performance by elderly adults in China. Clin Neuropsychol 2019; 33:96-105. [PMID: 31322036 DOI: 10.1080/13854046.2019.1640285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Xu Shanhu
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Chen Linhui
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Jin Xiaoqing
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Yan Jing
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Xu Saizhu
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Xu Ying
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Liu Caixia
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
| | - Jin Yu
- Department of Neurology, Zhejiang Hospital, Hangzhou, China
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Talwar NA, Churchill NW, Hird MA, Pshonyak I, Tam F, Fischer CE, Graham SJ, Schweizer TA. The Neural Correlates of the Clock-Drawing Test in Healthy Aging. Front Hum Neurosci 2019; 13:25. [PMID: 30804769 PMCID: PMC6370722 DOI: 10.3389/fnhum.2019.00025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 01/21/2019] [Indexed: 11/28/2022] Open
Abstract
Importance: The clock-drawing test (CDT) is an important neurocognitive assessment tool, widely used as a screening test for dementia. Behavioral performance on the test has been studied extensively, but there is scant literature on the underlying neural correlates. Purpose: To administer the CDT naturalistically to a healthy older aging population in an MRI environment, and characterize the brain activity associated with test completion. Main Outcome and Measure: Blood-oxygen-level dependent (BOLD) functional MRI was conducted as participants completed the CDT using novel tablet technology. Brain activity during CDT performance was contrasted to rest periods of visual fixation. Performance on the CDT was evaluated using a standardized scoring system (Rouleau score) and time to test completion. To assess convergent validity, performance during fMRI was compared to performance on a standard paper version of the task, administered in a psychometric testing room. Results: Study findings are reported for 33 cognitively healthy older participants aged 52–85. Activation was observed in the bilateral frontal, occipital and parietal lobes as well as the supplementary motor area and precentral gyri. Increased age was significantly correlated with Rouleau scores on the clock number drawing (R2) component (rho = -0.55, p < 0.001); the clock hand drawing (R3) component (rho = -0.50, p < 0.005); and the total clock (rho = -0.62, p < 0.001). Increased age was also associated with decreased activity in the bilateral parietal and occipital lobes as well as the right temporal lobe and right motor areas. Conclusion and Relevance: This imaging study characterizes the brain activity underlying performance of the CDT in a healthy older aging population using the most naturalistic version of the task to date. The results suggest that the functions of the occipital and parietal lobe are significantly altered by the normal aging process, which may lead to performance decrements.
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Affiliation(s)
- Natasha A Talwar
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - Nathan W Churchill
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada
| | - Megan A Hird
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada
| | - Iryna Pshonyak
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada
| | - Fred Tam
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Corinne E Fischer
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Simon J Graham
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada.,Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Tom A Schweizer
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Medical Sciences, University of Toronto, Toronto, ON, Canada.,Division of Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
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