scholarly journals Age-Related Changes in the Auditory Reaction Time of Healthy Elderly Person while Walking

2011 ◽  
Vol 23 (2) ◽  
pp. 185-188 ◽  
Author(s):  
Zhiming Tang ◽  
Saichi Wakayama
Keyword(s):  
Reaction Time ◽  
Elderly Person ◽  
Healthy Elderly ◽  
Age Related ◽  
Auditory Reaction Time ◽  
Age Related Changes

scholarly journals Age-Related Structural and Functional Changes of the Hippocampus and the Relationship with Inhibitory Control

2020 ◽  
Vol 10 (12) ◽  
pp. 1013
Author(s):  
Sien Hu ◽  
Chiang-shan R. Li
Keyword(s):  
Reaction Time ◽  
Cognitive Aging ◽  
Gray Matter Volume ◽  
Stop Signal ◽  
Sequential Effect ◽  
Stop Signal Task ◽  
Functional Changes ◽  
Age Related ◽  
Stop Signal Reaction Time ◽  
Age Related Changes

Aging is associated with structural and functional changes in the hippocampus, and hippocampal dysfunction represents a risk marker of Alzheimer’s disease. Previously, we demonstrated age-related changes in reactive and proactive control in the stop signal task, each quantified by the stop signal reaction time (SSRT) and sequential effect computed as the correlation between the estimated stop signal probability and go trial reaction time. Age was positively correlated with the SSRT, but not with the sequential effect. Here, we explored hippocampal gray matter volume (GMV) and activation to response inhibition and to p(Stop) in healthy adults 18 to 72 years of age. The results showed age-related reduction of right anterior hippocampal activation during stop success vs. go trials, and the hippocampal activities correlated negatively with the SSRT. In contrast, the right posterior hippocampus showed higher age-related responses to p(Stop), but the activities did not correlate with the sequential effect. Further, we observed diminished GMVs of the anterior and posterior hippocampus. However, the GMVs were not related to behavioral performance or regional activities. Together, these findings suggest that hippocampal GMVs and regional activities represent distinct neural markers of cognitive aging, and distinguish the roles of the anterior and posterior hippocampus in age-related changes in cognitive control.

scholarly journals Spatial and semantic interference on an auditory Stroop test: comparison of young and older adults

2021 ◽  
Author(s):  
Shubhaganga Dhrruvakumar ◽  
Asha Yathiraj
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Reaction Time ◽  
Spatial Localization ◽  
Stroop Test ◽  
Response Accuracy ◽  
Age Related ◽  
Semantic Localization ◽  
Left Front ◽  
Age Related Changes

Background and Aim: Age related changes in cognitive functioning have been shown to vary depending on the task used. Thus, the study aimed to compare the responses of young and older adults to an auditory Stroop test that asse­ssed spatial (responses to location of the stimuli) and semantic (responses to meaning of the sti­muli) localization. Methods: The “Auditory spatial and semantic localization Stroop test”, developed as a part of the study was administered on 30 young adults aged 18 to 30 years and 30 older adults aged 58 to 70 years having normal hearing. The res­ponse accuracy and reaction time of the parti­cipants were determined for the words “right”, “left”, “front”, and “back.” Results: The older adults had significantly poo­rer response accuracy and reaction time than the young adults for both spatial and semantic loca­lization tasks. Within each participant group, semantic localization had better response accu­racy than spatial localization, while such diffe­rences in reaction time were found only in the older adults. In both groups, a congruency effect was seen for spatial but not for semantic loca­lization when response accuracy was calculated, whereas it was observed only for semantic and not for spatial localization when reaction time was measured. Conclusion: The auditory Stroop test, which measures stimulus interference and cognitive skills, could be used as a simple tool to assess the same for stimuli presented through the audi­tory modality. This would be especially helpful in older adults who may demonstrate cognitive decline with ageing to auditory stimuli. Keywords: Spatial localization; semantic localization; auditory Stroop test; age related changes

Age-related changes of leptin and leptin receptor variants in healthy elderly and long-lived adults

2014 ◽  
Vol 15 (3) ◽  
pp. 365-371 ◽  
Author(s):  
Malgorzata Roszkowska-Gancarz ◽  
Marta Jonas ◽  
Magdalena Owczarz ◽  
Alina Kurylowicz ◽  
Jacek Polosak ◽  
...  
Keyword(s):  
Leptin Receptor ◽  
Healthy Elderly ◽  
Age Related ◽  
Age Related Changes

scholarly journals Longitudinal Age-Related Changes in 24-Hour Total Heart Beats and Premature Beats and Their Relationship in Healthy Elderly Subjects

2006 ◽  
Vol 47 (4) ◽  
pp. 549-563 ◽  
Author(s):  
Hirofumi Tasaki ◽  
Takumi Serita ◽  
Chiaki Ueyama ◽  
Kouei Kitano ◽  
Shinji Seto ◽  
...  
Keyword(s):  
Elderly Subjects ◽  
Healthy Elderly ◽  
Age Related ◽  
Premature Beats ◽  
Age Related Changes ◽  
Healthy Elderly Subjects

scholarly journals Age-Related Changes in Resting-State Networks of A Large Sample Size of Healthy Elderly

2015 ◽  
Vol 21 (10) ◽  
pp. 817-825 ◽  
Author(s):  
Chun-Chao Huang ◽  
Wen-Jin Hsieh ◽  
Pei-Lin Lee ◽  
Li-Ning Peng ◽  
Li-Kuo Liu ◽  
...  
Keyword(s):  
Sample Size ◽  
Resting State ◽  
Large Sample Size ◽  
Resting State Networks ◽  
Large Sample ◽  
Healthy Elderly ◽  
Age Related ◽  
Age Related Changes

On Attentional Control and the Aging Driver

2013 ◽  
pp. 20-32 ◽  
Author(s):  
Jason M. Watson ◽  
Ann E. Lambert ◽  
Joel M. Cooper ◽  
Istenya V. Boyle ◽  
David L. Strayer
Keyword(s):  
Reaction Time ◽  
Cognitive Aging ◽  
Attentional Control ◽  
Cognitive Theory ◽  
Motor Vehicle ◽  
Age Related ◽  
Frontal Lobe Function ◽  
Age Deficits ◽  
Age Related Changes ◽  
Lead Vehicle

Theories of cognitive aging suggest diminished frontal lobe function and reduced attentional control could contribute to age-related changes in driving a motor vehicle. To address this possibility, the authors investigated the interrelationship among age, attentional control, and driving performance. Using a high-fidelity simulator, they measured individual differences in participants’ abilities to maintain a prescribed following distance behind a lead vehicle, as well as their reaction time to press a brake pedal when this lead vehicle braked. Consistent with the literature on age-related changes in driving, following distance elongated with increased age, and brake reaction time slowed. Furthermore, regression analyses revealed the increase in following distance and the slowing in brake reaction time both co-varied with age deficits in attentional control. These results provide a novel demonstration of the inherent value of cognitive theory when applied to naturalistic settings, sharpening our understanding of the relevance of age-related deficits in attentional control for complex, real-world tasks like driving.

scholarly journals Age-related Changes of Reaction Time and p300 for Low-contrast Color Stimuli: Effects of Yellowing of the Aging Human Lens

2006 ◽  
Vol 25 (2) ◽  
pp. 179-187 ◽  
Author(s):  
Taka-aki Suzuki ◽  
Yi Qiang ◽  
Satoshi Sakuragawa ◽  
Hisae Tamura ◽  
Katsunori Okajima
Keyword(s):  
Reaction Time ◽  
Human Lens ◽  
Low Contrast ◽  
Age Related ◽  
Age Related Changes
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