Age-related changes in prefrontal activity during walking in dual-task situations: A fNIRS study
- Background: Previous studies suggest that the human gait is under control of higher-order cognitive processes, located in the frontal lobes, such that an age-related degradation of cognitive capabilities has a negative impact on gait.
Results: Our behavioral data partly confirm previous accounts on higher dual-task costs in stepping parameters (i.e., decreased step duration) in old age, particularly with a visual task and negative dual-task cost (i.e., improved performance) during the verbal task in young adults. Functional imaging data revealed little change of prefrontal activation from single- to dual-task walking in young individuals. In the elderly, however, prefrontal activation substantially decreased during dual-task walking with a complex visual task.
Conclusion: We interpret these findings as evidence for a shift of processing resources from the prefrontal cortex to other brain regions when seniors face the challenge of walking and concurrently executing a visually demanding task. (C) 2014 Elsevier B.V. All rightsBackground: Previous studies suggest that the human gait is under control of higher-order cognitive processes, located in the frontal lobes, such that an age-related degradation of cognitive capabilities has a negative impact on gait.
Results: Our behavioral data partly confirm previous accounts on higher dual-task costs in stepping parameters (i.e., decreased step duration) in old age, particularly with a visual task and negative dual-task cost (i.e., improved performance) during the verbal task in young adults. Functional imaging data revealed little change of prefrontal activation from single- to dual-task walking in young individuals. In the elderly, however, prefrontal activation substantially decreased during dual-task walking with a complex visual task.
Conclusion: We interpret these findings as evidence for a shift of processing resources from the prefrontal cortex to other brain regions when seniors face the challenge of walking and concurrently executing a visually demanding task. (C) 2014 Elsevier B.V. All rights reserved.…
| Verfasserangaben: | Rainer Beurskens, Ingo Helmich, Robert Rein, Otmar L. Bock |
|---|---|
| DOI: | https://doi.org/10.1016/j.ijpsycho.2014.03.005 |
| ISSN: | 0167-8760 |
| ISSN: | 1872-7697 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/24681355 |
| Titel des übergeordneten Werks (Englisch): | International journal of psychophysiology |
| Verlag: | Elsevier |
| Verlagsort: | Amsterdam |
| Publikationstyp: | Wissenschaftlicher Artikel |
| Sprache: | Englisch |
| Jahr der Erstveröffentlichung: | 2014 |
| Erscheinungsjahr: | 2014 |
| Datum der Freischaltung: | 27.03.2017 |
| Freies Schlagwort / Tag: | Aging; Dual-task walking; Executive function; Locomotion; Neural activation; fNIRS |
| Band: | 92 |
| Ausgabe: | 3 |
| Seitenanzahl: | 7 |
| Erste Seite: | 122 |
| Letzte Seite: | 128 |
| Organisationseinheiten: | Humanwissenschaftliche Fakultät / Strukturbereich Kognitionswissenschaften / Department Sport- und Gesundheitswissenschaften |
| Peer Review: | Referiert |
| Name der Einrichtung zum Zeitpunkt der Publikation: | Humanwissenschaftliche Fakultät / Institut für Sportwissenschaft |
