Experimental Aging Research

OBJECTIVE: To investigate whether muscle quality is related to cognitive function in older adults living in the community. METHODS: The participants were 40 community-dwelling older adults without a diagnosis of dementia (mean age, 78.85 ± 6.40 years; 31 women). The dependent variable was the score on the mild cognitive impairment (MCI) index of the Japanese version of the Neurobehavioral Cognitive Status Examination Five (range: 0-6; higher scores indicate MCI or possible dementia)...

OBJECTIVE: Research suggests that executive functions and metacognitive abilities, including self-reflection and insight, may share underlying mechanisms since both rely on top-down cognitive processes and require self-regulation. However, these relationships have not been thoroughly examined by empirical research. The current study investigated the relationship between insight, self-reflection, and executive functions cross-sectionally across different stages of aging. METHODS: Participants were 1284 (655 men and 629 women) cognitively healthy community dwellers with an age range of 18-89 years (M = 47...

BACKGROUND: The present study examined age differences in and the relationship between two indices of cognitive reappraisal and expressive suppression: the degree of emotion regulation and the habitual use of emotion-regulation strategies. METHOD: In total, 101 younger and 99 older participants were included in this study. The degree of emotion regulation was measured using an experimental task in which participants were presented with negative or positive pictures and required to regulate their emotions...

The aim was to examine the diagnostic efficacy of hippocampal subregions volume and texture in differentiating amnestic mild cognitive impairment (MCI) from normal aging changes. Ninety MCI subjects and eighty-eight well-matched healthy controls (HCs) were selected. Twelve hippocampal subregions volume and texture features were extracted using Freesurfer and MaZda based on T1 weighted MRI. Then, two-sample t-test and Least Absolute Shrinkage and Selection Operator (LASSO) regression were developed to select a subset of the original features...

This study examined the effectiveness of a multiple group membership intervention for reducing the negative effects of age-based stereotype threat (ABST) on older adults' objective memory performance and subjective memory concerns. Healthy older adults ( N  = 68) were randomly allocated to an ABST + threat-removal (ABST+TR) or ABST + active-control (ABST+AC) condition. After activating ABST, the ABST+TR condition completed a group-listing task and the ABST+AC condition completed a meal-listing task...

BACKGROUND: Music evokes strong and persistent emotional responses. However, the mechanisms underlying the emotional effects of music, particularly in older adults, are largely unknown. One purported mechanism by which music evokes emotions is through memory - that is, music evokes personal, autobiographical memories that then lead to emotional responses. METHOD: Here, we investigated whether memory-evoking music induces stronger and longer-lasting emotional responses than non-memory-evoking music, and whether these emotional responses differ between younger and older adults...

OBJECTIVE: To investigate whether central sensitization (CS) in elderly patients was a predictive risk factor for postoperative neurocognitive dysfunction (PNCD). METHODS: One hundred and thirty-three aged patients undergoing total knee arthroplasty (TKA) who received femoral nerve block and general anesthesia were recruited in this research and prospectively assigned into two groups according to the Central Sensitization Inventory (CSI) score: group C ( n  = 106, CSI score less than 40) and group CS ( n  = 27, CSI score higher than 40)...

Empathy, the ability to understand and respond to the experiences of others, is an important skill for maintaining good relationships throughout one's life. Previous research indicated that emotional empathy remained stable or even increased in older adults compared to younger adults, while cognitive empathy showed age-related deficits. Based on the selective engagement hypothesis, this deficit was not caused by a decline in cognitive functioning, but by a lack of willingness to judge the target person's emotions more precisely, that is, by a lack of interaction motivation...

This study examined the combined influence of assimilation and contrast effects on the memory self-efficacy and objective memory of young (ages 18-25, n  = 114), middle-age (ages 26-59, n  = 48), and older (ages 60-98, n  = 59) adults. We reminded participants that they matched positive, not negative, memory-relevant or memory-irrelevant stereotypes of aging either before (experimental conditions) or after (control condition) they completed a memory self-efficacy questionnaire and took a memory test...

BACKGROUND: In spite of declines in working memory and other processes, older adults generally maintain good ability to understand and remember spoken sentences. In part this is due to preserved knowledge of linguistic rules and their implementation. Largely overlooked, however, is the support older adults may gain from the presence of sentence prosody (pitch contour, lexical stress, intra-and inter-word timing) as an aid to detecting the structure of a heard sentence. METHODS: Twenty-four young and 24 older adults recalled recorded sentences in which the sentence prosody corresponded to the clausal structure of the sentence, when the prosody was in conflict with this structure, or when there was reduced prosody uninformative with regard to the clausal structure...

INTRODUCTION: This study aimed to evaluate the modifying role of dietary fiber intake in the relationship between COPD and cognitive performance. METHODS: Data of adults aged ≥60 years were extracted from the National Health and Nutrition Examination Survey (NHANES) 2011-2014. Participants with information on cognitive function measures were included. Dietary fiber intake, identified using participants' 24-h recall surveys, was grouped into high (>25 g/day) and low (≤25 g/day) levels...

OBJECTIVE: The current study aimed to examine the relationship between depressive symptoms and quality of life among Jordanian community-dwelling older adults. METHODS: A cross-sectional, descriptive correlational design was used. A convenience sample ( N  = 602) was selected to recruit the participants in the Amman governorate during the period from August to November 2021. RESULTS: Findings demonstrated that the mean (SD) age of older adults was 67...

BACKGROUND: Vitamin D (VD) is a neuroactive steroid involved in many brain functions, such as neurotrophic, neuroimmune control and neurotransmission, which affects the growth and function of the brain. The purpose of this study is to explore the effect of VD on motor and cognitive function of aged mice after sevoflurane anesthesia. METHOD: We established sevoflurane anesthesia model and VD(-) and VD(+) mice model. The VD concentration of mice in each group was determined by enzyme-linked immunosorbent assay (ELISA)...

Aging is characterized by molecular damage from free radicals, leading to neural dysfunction and memory impairment. This study investigated using bioceramic material and colored light to mitigate neurodegenerative symptoms in aging rats. We assessed the effects of different color light spectrums on D-galactose-induced aging rats using the Morris water maze, novel object recognition, and open field tests. Findings revealed that bioceramic material with various light wavelengths improved activity, recognition, and memory in aging rats...

The gendered expectations and responsibilities placed upon women can impede their ability to participate in social activities and engage in physical leisure pursuits, ultimately having a negative impact on their health. Our study investigates the mechanisms through which gender influences individuals' engagement with physical activity during free time and how this relates to self-rated health outcomes among adults aged 45 years or older living in India. Using cross-sectional analysis and Structural Equation Modelling, we analyzed data stratified by gender and age from the Longitudinal Ageing Study of India to examine these conceptual pathways...

OBJECTIVES: We examine age-related differences in recollection and test the impact of words with high vs low sensory experience ratings (SER) in older and younger adults. We expected that the recollection of words with high SER would be similar in older and young adults, as they depend on knowledge, unlike recollection of words with a low SER, which would depend on executive functions. METHODS: We manipulated the sensory experience of words (high vs. low) in encoding in young and older adults...

The ability to predict collisions with moving objects deteriorates with aging. We followed the affordance-based model to identify optical variables that older adults had difficulty using for collision prediction. We reproduced a modified version of the interception task used in Steinmetz (Steinmetz, Layton, Powell, & Fajen, 2020, "Affordance-based versus current - future accounts of choosing whether to pursue or abandon the chase of a moving target," Journal of Vision , 20(3), 8) in a virtual reality (VR) environment and newly introduced perturbation for each of three optical variables (vertical and horizontal expansions of a moving object and the bearing angle produced between participants and a moving object)...

OBJECTIVES: We examine age-related differences in implicit and explicit memory tasks, and test the impact of future time perspectives on priming and cued recall. METHODS: We induced time perspective in young (limited-time perspective) and older (extended-time perspective) adults. Implicit and explicit memory tasks were performed by younger and older adults. RESULTS: Results showed an age-related effect on priming and cued recall, confirming that implicit and explicit memory are impaired in aging...

INTRODUCTION: This study aims to investigate whether the reminiscence bump in older adults' autobiographical memory is influenced by the interviewer's age. Methods: I arranged four interviewer. CONDITIONS: child, university student, middle-aged adult, and older adult. The participating older adults were asked individually to describe three memories and the age at which the event occurred. I analyzed the temporal distribution of the bumps and the recall order. RESULTS: The results indicate that the interviewer's age, especially the child interviewers were influenced the temporal location of the reminiscence bump...

BACKGROUND AND AIM: Social factors play a crucial role in the quality of life of + 50 adults. This study aimed to investigate the association between social support, depression, and loneliness and the health-related quality of life in + 50 adults of Ardakan. METHODS: This was a cross-sectional study from the first phase of Ardakan Cohort Study on Aging (ACSA) in 2019. Health-Related Quality of Life (HRQoL, SF-16), Duke Social Support Index (DSSI), and Center for Epidemiologic Studies Depression Scale (CES-D10) were used to assess the variables of interest...