Title :

A new paradigm to study the influence of attentional load on cortical activity for motor preparation of step initiation

Author(s) :

Braquet, Aurore [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Bayot, Madli [Auteur]
Troubles cognitifs dégénératifs et vasculaires [U1171]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Tard, Céline [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
DEFEBVRE, Luc [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U1171
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Derambure, Philippe [Auteur]
Médicaments et Molécules pour agir sur les Systèmes Vivants (M2SV) - U1177

Médicaments et molécules pour agir sur les Systèmes Vivants - U 1177 [M2SV]
Dujardin, Kathy [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U1171
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]
Delval, Arnaud [Auteur correspondant]
Troubles cognitifs dégénératifs et vasculaires - U 1171 [TCDV]

Journal title :

Experimental Brain Research

Abbreviated title :

Exp Brain Res

Volume number :

238

Pages :

643-656

Publisher :

Springer Science and Business Media LLC

Publication date :

2020-02-05

English keyword(s) :

Anticipatory postural adjustments; Attention network test; Electroencephalography; Step initiation

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Motor programme for gait initiation can vary as a function of attentional resources. The objective of the present study was to determine whether alertness, orientation and executive control can modulate cortical activation ...
Show more >Motor programme for gait initiation can vary as a function of attentional resources. The objective of the present study was to determine whether alertness, orientation and executive control can modulate cortical activation during step initiation. The attention network test (ANT) was used to control the influence of different attentional components on kinetic characteristics of step initiation and the associated cortical activity. Thirty healthy adults performed ANT combined with step initiation. The step execution time (SET) and anticipatory postural adjustments (APAs) were recorded. Movement-related cortical potentials (MRCPs) and event-related spectral perturbations (ERSPs) after response emission were analysed according to the presence or absence of cueing or conflict resolution. Step reaction time and thus SET were significantly shorter with cueing, whereas APA duration and SET were longer during conflict resolution. Moreover, alertness was related to a higher rate of anticipated responses, and conflicting situations were associated with a greater amount of multiple APAs. Attentional load did not affect MRCPs but ERSPs: trials with a cue showed earlier posterior alpha and beta desynchronisations before APA onset. Furthermore, we found earlier, more pronounced and longer alpha- and beta-band desynchronisations over the sensorimotor cortex for trials with incongruent flankers. Our results showed that attention has an impact on step initiation. A specific pattern of response-locked ERSPs seems to mirror behavioural effects of attentional load on step initiation. This new paradigm combining ANT and step initiation is, therefore, promising to investigate the interaction between attention and gait initiation in pathological populations.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Non spécifiée

European Project :

Industrial Academic Initial Training Network towards specific diagnosis and treatment of age-related gait and balance deficits

Comment :

"European Union (EU)" - "Horizon 2020" - "Keep Control" - "MSCA-ITN-ETN" - "Grant number 721577"

Administrative institution(s) :

Université de Lille
Inserm
CHU Lille
CNRS

Collections :

• Lille Neurosciences & Cognition (LilNCog) - U 1172

Research team(s) :

Troubles cognitifs dégénératifs et vasculaires

Submission date :

2020-07-02T11:59:24Z
2020-07-03T07:41:15Z
2020-07-03T07:42:54Z