Age differences in prefrontal cortex activity during dual-task tandem gait: An fNIRS study

Brain Research, Год журнала: 2025, Номер unknown, С. 149603 - 149603

Опубликована: Март 1, 2025

Tandem Gait (TG) under dual-task (DT) conditions may facilitate the investigation of important aspects dynamic balance and mobility, particularly concerning pathological motor cognitive aging processes. Our study aims to identify age-related differences in behavioral neural changes caused by interference during while TG. 20 young (YA, age 21.3 ± 1.86) 12 middle-aged adults (MA, 55.3 3.81) had perform TG tasks ((a) recite alphabet backward, (b) numbers letters alternately (oral TMT-B), (c) count backward from a given 3-digit number steps 3), DT (TG + tasks) for 30 s each. The cortical activation frontal lobe was recorded using an 8 sources × detectors fNIRS system. On data, MA displayed notably reduced accurate responses compared YA, though their remained comparable. From perspective, linear mixed model revealed significant task- group-related interaction effects only left dorsal lateral PFC. Compared showed lower over time DT, which can be attributed limitation resources lobe. This downregulation due overload, indicating that are approaching resources' capacity limit, when confronted with complex task demands.

Язык: Английский

Effects of dual-task training on cognitive-motor learning and cortical activation: A non-randomized clinical trial in healthy young adults

PLoS ONE, Год журнала: 2025, Номер 20(5), С. e0322036 - e0322036

Опубликована: Май 8, 2025

Dual-task (DT) training, which involves the simultaneous execution of cognitive and motor tasks, has been shown to influence task performance cortical activation, yet evidence on effects DT training activation for complex postural control tasks remains limited. This study investigated immediate retention a one-week program learning, in single-task conditions, bilateral prefrontal (PFC) vestibular cortices healthy young adults. Eighteen individuals (age = 22.39 ± 1.73 years) participated study. The paradigm involved dynamic stability platform (motor task) paired with either simple or auditory reaction time (RT) (cognitive). Participants completed 20–25 minutes (18 trials/day) across five consecutive days. was measured by duration participants maintained within 3 degrees horizontal while responding stimuli. Single-task performances were also assessed. Cortical PFC using functional near infrared spectroscopy (fNIRS), tracking changes oxygenated hemoglobin (HbO) concentrations. Pre-training, post-training, follow-up testing conducted. results demonstrate that significantly improves retains performance, likely due reduction cognitive-motor interference. Additionally, led decreased cortices, specifically condition, suggesting enhanced attentional resource allocation optimized input processing, indicative neural efficiency. Notably, these transferred performances, corresponding reductions cortex despite lack direct tasks. advances our understanding mechanisms underlying underscores critical role practice optimizing

Язык: Английский

MoBI: Mobile Brain/Body Imaging to Understand Walking and Balance

Опубликована: Янв. 1, 2024

Язык: Английский