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Liu L, Ding X, Li H, Zhou Q, Gao D, Lu C, Ding G. Reduced listener-speaker neural coupling underlies speech understanding difficulty in older adults. Brain Struct Funct 2021; 226:1571-1584. [PMID: 33839942 DOI: 10.1007/s00429-021-02271-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/30/2021] [Indexed: 11/26/2022]
Abstract
An increasing number of studies have highlighted the importance of listener-speaker neural coupling in successful verbal communication. Whether the brain-to-brain coupling changes with healthy aging and the possible role of this change in the speech comprehension of older adults remain unexplored. In this study, we scanned with fMRI a young and an older speaker telling real-life stories and then played the audio recordings to a group of young (N = 28, aged 19-27 year) and a group of older adults during scanning (N = 27, aged 53-75 year), respectively. The older listeners understood the speech less well than did the young listeners, and the age of the older listeners was negatively correlated with their level of speech understanding. Compared to the young listener-speaker dyads, the older dyads exhibited reduced neural couplings in both linguistic and extra-linguistic areas. Moreover, within the older group, the listener's age was negatively correlated with the overall strength of interbrain coupling, which in turn was associated with reduced speech understanding. These results reveal the deficits of older adults in achieving neural alignment with other brains, which may underlie the age-related decline in speech understanding.
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Affiliation(s)
- Lanfang Liu
- Guangdong Provincial Key Laboratory of Social Cognitive Neuroscience and Mental Health, Department of Psychology, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Xiaowei Ding
- Guangdong Provincial Key Laboratory of Social Cognitive Neuroscience and Mental Health, Department of Psychology, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Hehui Li
- Center for Brain Disorders and Cognitive Sciences, Shenzhen University, Shenzhen, 518060, PR China
| | - Qi Zhou
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University & IDG, McGovern Institute for Brain Research, Beijing, 100875, China
| | - Dingguo Gao
- Guangdong Provincial Key Laboratory of Social Cognitive Neuroscience and Mental Health, Department of Psychology, Sun Yat-Sen University, Guangzhou, 510006, China
| | - Chunming Lu
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University & IDG, McGovern Institute for Brain Research, Beijing, 100875, China
| | - Guosheng Ding
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University & IDG, McGovern Institute for Brain Research, Beijing, 100875, China.
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Tromp D, Dufour A, Lithfous S, Pebayle T, Després O. Episodic memory in normal aging and Alzheimer disease: Insights from imaging and behavioral studies. Ageing Res Rev 2015; 24:232-62. [PMID: 26318058 DOI: 10.1016/j.arr.2015.08.006] [Citation(s) in RCA: 198] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/20/2015] [Indexed: 12/30/2022]
Abstract
Age-related cognitive changes often include difficulties in retrieving memories, particularly those that rely on personal experiences within their temporal and spatial contexts (i.e., episodic memories). This decline may vary depending on the studied phase (i.e., encoding, storage or retrieval), according to inter-individual differences, and whether we are talking about normal or pathological (e.g., Alzheimer disease; AD) aging. Such cognitive changes are associated with different structural and functional alterations in the human neural network that underpins episodic memory. The prefrontal cortex is the first structure to be affected by age, followed by the medial temporal lobe (MTL), the parietal cortex and the cerebellum. In AD, however, the modifications occur mainly in the MTL (hippocampus and adjacent structures) before spreading to the neocortex. In this review, we will present results that attempt to characterize normal and pathological cognitive aging at multiple levels by integrating structural, behavioral, inter-individual and neuroimaging measures of episodic memory.
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Affiliation(s)
- D Tromp
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA - UMR 7364 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France.
| | - A Dufour
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA - UMR 7364 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France; Centre d'Investigations Neurocognitives et Neurophysiologiques (CI2N - UMS 3489 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France
| | - S Lithfous
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA - UMR 7364 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France
| | - T Pebayle
- Centre d'Investigations Neurocognitives et Neurophysiologiques (CI2N - UMS 3489 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France
| | - O Després
- Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA - UMR 7364 - CNRS/UDS) - 21 rue Becquerel, 67087 Strasbourg, France.
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Association between social functioning and prefrontal hemodynamic responses in elderly adults. Behav Brain Res 2014; 272:32-9. [DOI: 10.1016/j.bbr.2014.06.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 06/24/2014] [Accepted: 06/24/2014] [Indexed: 11/19/2022]
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Berryhill ME, Jones KT. tDCS selectively improves working memory in older adults with more education. Neurosci Lett 2012; 521:148-51. [PMID: 22684095 DOI: 10.1016/j.neulet.2012.05.074] [Citation(s) in RCA: 210] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 05/12/2012] [Accepted: 05/31/2012] [Indexed: 10/28/2022]
Abstract
Cognitive performance, including performance on working memory (WM) tasks declines with age. Changes in brain activations are one presumed contributor to WM decline in the healthy aging population. In particular, neuroimaging studies show that when older adults perform WM tasks there tends to be greater bilateral frontal activity than in younger adults. We hypothesized that stimulating the prefrontal cortex in healthy older adults would improve WM performance. To test this hypothesis we employed transcranial direct current stimulation (tDCS), a neurostimulation technique in which small amounts of electrical current are applied to the scalp with the intent of modulating the activity in underlying neurons. Across three testing sessions we applied sham stimulation or anodal tDCS to the left (F3) or right (F4) prefrontal cortex to healthy older adults as they performed trials of verbal and visual 2-back WM tasks. Surprisingly, tDCS was uniformly beneficial across site and WM task, but only in older adults with more education. In the less educated group, tDCS provided no benefit to verbal or visual WM performance. We interpret these findings as evidence for differential frontal recruitment as a function of strategy when older adults perform WM tasks.
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Affiliation(s)
- Marian E Berryhill
- Department of Psychology, Cognitive and Brain Science Program, University of Nevada, Reno, NV 89557, United States.
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Anomalous PiB enhancement in the superior sagittal and transverse venous sinuses. Alzheimer Dis Assoc Disord 2011; 26:186-90. [PMID: 21909018 DOI: 10.1097/wad.0b013e31822de18c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Pittsburgh compound-B (PiB), an amyloid-binding positron emission tomography (PET) tracer, is widely used for imaging amyloid-β in those with and at risk for Alzheimer disease. Here, we report on an otherwise normal 68-year-old female with abnormally high and very focal PiB retention. Coregistered T1-weighted magnetic resonance imaging and dynamic 2-fluoro-2-deoxy-D-glucose (FDG) images confirmed that the focal PiB enhancement was in the superior sagittal and transverse sinuses, outside of the adjacent cortex. Flow through the venous vasculature was normal as assessed by dynamic FDG PET imaging. These features supported the conclusion that PiB retention was not simply due to a hemodynamic abnormality, but may have represented PiB binding to fibrillar deposits of a β-sheet protein (ie, amyloid), whose nature is currently unclear.
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Moraes H, Deslandes A, Silveira H, Arcoverde C, Alve H, Laks J. Effects of motor and cognitive dual-task performance in depressive elderly, healthy older adults, and healthy young individuals. Dement Neuropsychol 2011; 5:198-202. [PMID: 29213744 PMCID: PMC5619479 DOI: 10.1590/s1980-57642011dn05030007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Impairments in dual-task performance can be observed in healthy older adults when motor and cognitive assignments are applied simultaneously. According to the hypofrontality hypothesis, there may be a reduction in frontal cognitive function during exercise. Objective The aim of the present study was to compare the performance changes on cognitive tests of depressive elderly (n=10), healthy older adults (n=10), and healthy young individuals (n=10) during cycle ergometer exercise. Methods The groups were submitted to a working memory test, a short memory test and a semantic memory test, before and during a 20-minute cycle ergometer exercise at 80% of their age-predicted maximal heart rate. Results Significant differences (p=0.04) were observed in scores on the digit backward test during exercise when young individuals were compared to healthy older adults. This result indicates that young subjects, as expected, had better performance than elderly. No significant differences were found among the groups for the digit forward subtest (p=0.40) or the vocabulary test (p=0.69). Conclusion Data from this study showed that healthy older adults had impaired performance on higher cognitive tasks when these assignments were applied together with motor tasks.
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Affiliation(s)
- Helena Moraes
- Ms, Center for Alzheimer Disease and Related Disorders, Institute of Psychiatry of the Federal University of Rio de Janeiro, Rio de Janeiro RJ, Brazil
| | - Andrea Deslandes
- PHD, National School of Public Health, FIOCRUZ, Rio de Janeiro RJ, Brazil
| | - Heitor Silveira
- Ms, Center for Alzheimer Disease and Related Disorders, Institute of Psychiatry of the Federal University of Rio de Janeiro, Rio de Janeiro RJ, Brazil
| | - Cynthia Arcoverde
- Ms, Center for Alzheimer Disease and Related Disorders, Institute of Psychiatry of the Federal University of Rio de Janeiro, Rio de Janeiro RJ, Brazil
| | - Heloisa Alve
- Ms, Beckman Institute & Department of Psychology, University of Illinois at Urbana-Champaign
| | - Jerson Laks
- PHD, Researcher Pq2 from the National Research Council (CNPq)
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Eyler LT, Sherzai A, Kaup AR, Jeste DV. A review of functional brain imaging correlates of successful cognitive aging. Biol Psychiatry 2011; 70:115-22. [PMID: 21316037 PMCID: PMC3641853 DOI: 10.1016/j.biopsych.2010.12.032] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2010] [Revised: 12/04/2010] [Accepted: 12/13/2010] [Indexed: 01/10/2023]
Abstract
Preserved cognitive performance is a key feature of successful aging. Several theoretical models have been proposed to explain the putative underlying relationship between brain function and performance. We aimed to review imaging studies of the association between brain functional response and cognitive performance among healthy younger and older adults to understand the neural correlates of successful cognitive aging. MEDLINE-indexed articles published between January 1989 and December 2009 and bibliographies of these articles and related reviews were searched. Studies that measured brain function with functional magnetic resonance imaging or positron emission tomography, evaluated cognitive performance, analyzed how cognitive performance related to brain response, and studied healthy older individuals were included. Eighty of 550 articles met these criteria. Seventy percent of the studies reported some brain regions in which greater activation related to better cognitive performance among older participants. This association was not universal, however, and was seen mainly in frontal cortex brain response and seemed to be more common among older compared with younger individuals. This review supports the notion of compensatory increases in brain activity in old age resulting in better cognitive performance, as suggested by hemispheric asymmetry reduction and posterior-anterior shift models of functional brain aging. However, a simple model of bigger structure → greater brain response → better cognitive performance might not be accurate. Suggestions for future research are discussed.
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Affiliation(s)
- Lisa T Eyler
- Sam and Rose Stein Institute for Research on Aging, University of California San Diego, San Diego, California, USA.
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Kalpouzos G, Chételat G, Baron JC, Landeau B, Mevel K, Godeau C, Barré L, Constans JM, Viader F, Eustache F, Desgranges B. Voxel-based mapping of brain gray matter volume and glucose metabolism profiles in normal aging. Neurobiol Aging 2009; 30:112-24. [PMID: 17630048 DOI: 10.1016/j.neurobiolaging.2007.05.019] [Citation(s) in RCA: 264] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2006] [Revised: 05/04/2007] [Accepted: 05/21/2007] [Indexed: 11/26/2022]
Abstract
With age, the brain undergoes both structural and functional alterations, probably resulting in reported cognitive declines. Relatively few investigations have sought to identify those areas that remain intact with aging, or undergo the least deterioration, which might underlie cognitive preservations. Our aim here was to establish a comprehensive profile of both structural and functional changes in the aging brain, using up-to-date voxel-based methodology (i.e. optimized voxel-based morphometry (VBM) procedure; resting-state (18)FDG-PET with correction for partial volume effects (PVE)) in 45 optimally healthy subjects aged 20-83 years. Negative and positive correlations between age and both gray matter (GM) volume and (18)FDG uptake were assessed. The frontal cortex manifested the greatest deterioration, both structurally and functionally, whereas the anterior hippocampus, the thalamus and (functionally) the posterior cingulate cortex were the least affected. Our results support the developmental theory which postulates that the first regions to emerge phylogenetically and ontogenetically are the most resistant to age effects, and the last ones the most vulnerable. Furthermore, the lesser affected anterior hippocampal region, together with the lesser functional alteration of the posterior cingulate cortex, appear to mark the parting of the ways between normal aging and Alzheimer's disease, which is characterized by early and prominent deterioration of both structures.
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Affiliation(s)
- Grégoria Kalpouzos
- Inserm-EPHE-Université de Caen/Basse-Normandie, Unité de Recherche E0218, GIP Cyceron, Caen, France
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Mattay VS, Goldberg TE, Sambataro F, Weinberger DR. Neurobiology of cognitive aging: insights from imaging genetics. Biol Psychol 2008; 79:9-22. [PMID: 18511173 PMCID: PMC3127547 DOI: 10.1016/j.biopsycho.2008.03.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2007] [Revised: 03/11/2008] [Accepted: 03/25/2008] [Indexed: 12/25/2022]
Abstract
Over the last several years, neuroscientists have been increasingly using neuroimaging techniques to unravel the neurobiology underlying cognitive aging, and in more recent years to explore the role of genes on the variability of the aging process. One of the primary goals of this research is to identify proteins involved in cognitive aging with the hope that this would facilitate the development of novel treatments to combat cognitive impairment. Further, it is likely with early identification of susceptible individuals, early intervention through life-style changes and other methods could increase an individual's resilience to the effects of aging.
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Affiliation(s)
- Venkata S Mattay
- Genes, Cognition and Psychosis Program, National Institute of Mental Health, National Institute of Health, Department of Health and Human Services, Bethesda, MD 20892, USA.
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Kochunov P, Mangin J, Coyle T, Lancaster J, Thompson P, Rivière D, Cointepas Y, Régis J, Schlosser A, Royall DR, Zilles K, Mazziotta J, Toga A, Fox PT. Age-related morphology trends of cortical sulci. Hum Brain Mapp 2006; 26:210-20. [PMID: 16161162 PMCID: PMC6871665 DOI: 10.1002/hbm.20198] [Citation(s) in RCA: 153] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
The age-related trends of the width and the depth of major cortical sulci were studied in normal adults. Ninety healthy subjects (47 males, 43 females) age 20-82 years were evaluated. Measurements of average sulcal width and depth in 14 prominent sulcal structures per hemisphere were performed with high-resolution anatomical MRI. The average sulcal width increased at a rate of about 0.7 mm/decade, while the average sulcal depth decreased at a rate of about 0.4 mm/decade. Sulcal age-related trends were found to be highly influenced by gender in the superior temporal, collateral, and cingulate sulci (P < 0.05), with males showing more pronounced age-related change in sulcal width than females. Sulcal structures located in multimodal cortical areas showed more profound age-related changes than sulcal structures in unimodal cortical areas (P < 0.05).
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Affiliation(s)
- Peter Kochunov
- Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | | | - Thomas Coyle
- Department of Psychology, University of Texas at San Antonio, San Antonio, Texas
| | - Jack Lancaster
- Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Paul Thompson
- Department of Psychology, University of Texas at San Antonio, San Antonio, Texas
| | | | | | - Jean Régis
- Service de Neurochirurgie Fonctionelle, CHU La timone, Marseille, France
| | - Anita Schlosser
- Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas
- SO‐HF Fredrikstad Hospital, Neurological Department, Fredrikstad, Norway
| | - Don R. Royall
- Department of Psychiatry, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Karl Zilles
- C&O Vogt Brain Research Institute, Heinrich Heine University, Duesseldorf, Germany
- Institute of Medicine, Research Center Juelich, Germany
| | - John Mazziotta
- Brain Mapping Center, Department of Neurology, UCLA School of Medicine, Los Angeles, California
| | - Arthur Toga
- Brain Mapping Center, Department of Neurology, UCLA School of Medicine, Los Angeles, California
| | - Peter T. Fox
- Research Imaging Center, University of Texas Health Science Center at San Antonio, San Antonio, Texas
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