Please use this identifier to cite or link to this item:
https://observatorio.fm.usp.br/handle/OPI/41156
Title: | Frontal Hemodynamic Response During Step Initiation Under Cognitive Conflict in Older and Young Healthy People |
Authors: | COELHO, Daniel Boari; BAZAN, Paulo Rodrigo; MORAIS, Guilherme Augusto Zimeo; BALARDIN, Joana Bisol; BATISTA, Alana Xavier; OLIVEIRA, Claudia Eunice Neves de; ANGELES, Emanuele Los; BERNARDO, Claudionor; SATO, Joao Ricardo; LIMA-PARDINI, Andrea C. de |
Citation: | JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES, v.76, n.2, p.216-223, 2021 |
Abstract: | Gait initiation is a daily challenge even for healthy individuals as it requires the timely coupling between the automatic anticipatory postural adjustment (APA) and the voluntary step according to the context. Modulation of this motor event has been thought to involve higher level brain control, including cognitive inhibitory circuitries. Despite the known participation of the supplementary motor area (SMA) in the modulation of some parameters of APA, the participation of areas controlling inhibition during gait initiation still needs to be investigated. In this study, the hemodynamic responses of the SMA and dorsolateral prefrontal cortex (DLPFC) were assessed using functional near-infrared spectroscopy (fNIRS) during a gait initiation task under cognitive conflict to select the foot to step (congruent [CON] and incongruent [INC] conditions). The older group (OG) showed worse inhibitory control than the young group (YG) along with more impairments in APA parameters. OG also had a lower amplitude of hemodynamic responses in both areas than YG in the INC. The INC increased the correlation between SMA and DLPFC only in the YG. Aging seems to impair the interaction between the hemodynamic responses of SMA and DLPFC, which influences APA performance in gait initiation under cognitive conflict. |
Appears in Collections: | Artigos e Materiais de Revistas Científicas - LIM/44 Artigos e Materiais de Revistas Científicas - LIM/45 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
art_COELHO_Frontal_Hemodynamic_Response_During_Step_Initiation_Under_Cognitive_2021.PDF Restricted Access | publishedVersion (English) | 2.79 MB | Adobe PDF | View/Open Request a copy |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.