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Jia Y, Woltering S, Deutz NEP, Engelen MPKJ, Coyle KS, Maio MR, Husain M, Liu ZX. Working Memory Precision and Associative Binding in Mild Cognitive Impairment. Exp Aging Res 2024; 50:206-224. [PMID: 36755482 DOI: 10.1080/0361073x.2023.2172949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 01/23/2023] [Indexed: 02/10/2023]
Abstract
To better understand working memory (WM) deficits in Mild Cognitive Impairment (MCI), we examined information precision and associative binding in WM in 21 participants with MCI, compared to 16 healthy controls, using an item-location delayed reproduction task. WM, along with other executive functions (i.e. Trail Making Task (TMT) and Stroop task), were measured before and after a 2-h nap. The napping manipulation was intended as an exploratory element to this study exploring potential impacts of napping on executive functions.Compared to healthy participants, participants with MCI exhibited inferior performance not only in identifying encoded WM items but also on item-location associative binding and location precision even when only one item was involved. We also found changes on TMT and Stroop tasks in MCI, reflecting inferior attention and inhibitory control. Post-napping performance improved in most of these WM and other executive measures, both in MCI and their healthy peers.Our study shows that associative binding and WM precision can reliably differentiate MCIs from their healthy peers. Additionally, most measures showed no differential effect of group pre- and post-napping. These findings may contribute to better understanding cognitive deficits in MCI therefore improving the diagnosis of MCI.
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Affiliation(s)
- Yajun Jia
- Department of Educational Psychology, Texas A&M University, College Station, Texas, USA
- School of Social Work, Columbia University, New York City, New York, USA
| | - Steven Woltering
- Department of Educational Psychology, Texas A&M University, College Station, Texas, USA
| | - Nicolaas E P Deutz
- Center for Translational Research in Aging and Longevity, Department of Health and Kinesiology, Texas A&M University, College Station, Texas, USA
| | - Mariëlle P K J Engelen
- Center for Translational Research in Aging and Longevity, Department of Health and Kinesiology, Texas A&M University, College Station, Texas, USA
| | - Kimberly S Coyle
- Center for Translational Research in Aging and Longevity, Department of Health and Kinesiology, Texas A&M University, College Station, Texas, USA
| | - Maria R Maio
- Nuffield Dept of Clinical Neurosciences, Department of Experimental Psychology and Wellcome Trust Centre for Integrative Neuroimaging, University of Oxford, Oxford, UK
| | - Masud Husain
- Nuffield Dept of Clinical Neurosciences, Department of Experimental Psychology and Wellcome Trust Centre for Integrative Neuroimaging, University of Oxford, Oxford, UK
| | - Zhong-Xu Liu
- Department of Behavioral Sciences, University of Michigan-Dearborn, Dearborn, Michigan, USA
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Toniolo S, Attaallah B, Veldsman M, Maio MR, Slavkova E, Dickson S, Plant O, Idris I, Tabi YA, Butler C, Thompson S, Manohar S, Husain M. Microstructural diffusivity (DTI) changes underlying visual short‐term memory deficits in Alzheimer's Disease detected by digital screening. Alzheimers Dement 2022. [DOI: 10.1002/alz.065119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Christopher Butler
- University of Oxford Oxford United Kingdom
- Imperial College London United Kingdom
| | - Sian Thompson
- Oxford University Hospitals NHS Foundation Trust Oxford United Kingdom
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Klar VS, Ang YS, Lockwood P, Attaallah B, Dickson S, Drew D, Kienast A, Maio MR, Plant O, Slavkova E, Toniolo S, Zambellas R, Irani SR, Husain M. Assessment of apathy in neurological patients using the Apathy Motivation Index caregiver version. J Neuropsychol 2021; 16:236-258. [PMID: 34532963 PMCID: PMC9290131 DOI: 10.1111/jnp.12262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/26/2021] [Indexed: 11/27/2022]
Abstract
Apathy is a common, disabling neuropsychiatric syndrome that occurs across many brain disorders and may be associated with diminished motivation in behavioural, cognitive, emotional and social domains. Assessment is complicated by the variability of symptoms across apathy domains and self‐report from patients, which can be misleading due to their lack of insight. Independent evaluation by clinicians also has limitations though if it has to be performed with limited time. Caregiver reports are a viable alternative, but current assessments for them either do not distinguish between different apathy domains or are interview‐based and take long to administer. In this study, we developed a brief caregiver questionnaire version of the recently developed Apathy Motivation Index (AMI), which is a self‐report tool. We confirmed three apathy factors in this new caregiver measure (AMI‐CG) that were also present in the AMI: Behavioural Activation, Emotional Sensitivity and Social Motivation. Furthermore, we validated the scores against more extensive caregiver interviews using the established Lillle apathy rating scale as well as patient self‐reports of apathy, measures of depression, anhedonia, cognition, activities of daily living and caregiver burden across four different neurological conditions: Parkinson's disease, Alzheimer's disease, subjective cognitive impairment and limbic encephalitis. The AMI‐CG showed good internal reliability, external validity and diagnostic accuracy. It also uncovered cases of social apathy overlooked by traditional instruments. Crucially, patients who under‐rated their apathy compared to informants were more likely to have difficulties performing everyday activities and to be a greater burden to caregivers. The findings provide evidence for a multidimensional conceptualization of apathy and an instrument for efficient detection of apathy based on caregiver reports for use in clinical practice.
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Affiliation(s)
- Verena S Klar
- Department of Experimental Psychology, University of Oxford, UK
| | - Yuen-Siang Ang
- Social and Cognitive Computing Department, Institute of High Performance Computing, A*STAR, Singapore, Singapore
| | - Patricia Lockwood
- Department of Experimental Psychology, University of Oxford, UK.,Centre for Human Brain Health, School of Psychology, University of Birmingham, UK
| | - Bahaaeddin Attaallah
- Nuffield Department of Clinical Neurosciences, University of Oxford, UK.,Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, UK
| | - Shannon Dickson
- Department of Experimental Psychology, University of Oxford, UK
| | - Daniel Drew
- Nuffield Department of Clinical Neurosciences, University of Oxford, UK
| | - Annika Kienast
- Department of Experimental Psychology, University of Oxford, UK
| | - Maria R Maio
- Nuffield Department of Clinical Neurosciences, University of Oxford, UK
| | - Olivia Plant
- Department of Experimental Psychology, University of Oxford, UK
| | - Elitsa Slavkova
- Department of Experimental Psychology, University of Oxford, UK
| | - Sofia Toniolo
- Nuffield Department of Clinical Neurosciences, University of Oxford, UK.,Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, UK
| | - Rhea Zambellas
- Nuffield Department of Clinical Neurosciences, University of Oxford, UK
| | - Sarosh R Irani
- Department of Neurology, John Radcliffe Hospital, Oxford University Hospitals, UK.,Oxford Autoimmune Neurology Group, Nuffield Department of Clinical Neurosciences, University of Oxford, UK
| | - Masud Husain
- Department of Experimental Psychology, University of Oxford, UK.,Nuffield Department of Clinical Neurosciences, University of Oxford, UK.,Wellcome Trust Centre for Integrative Neuroimaging, Department of Experimental Psychology, University of Oxford, UK
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Klar VS, Ang Y, Lockwood PL, Attaallah B, Dickson S, Drew D, Kienast A, Maio MR, Plant O, Slavkova E, Toniolo S, Zambellas R, Irani S, Husain M. Validity of a new brief assessment of apathy: Caregiver version of the apathy motivation index. Alzheimers Dement 2020. [DOI: 10.1002/alz.037940] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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