Healthy
Conditions
Keywords
near infrared spectroscopy, prefrontal cortex, attention, gait
Brief summary
Attention may influence the motor performance and frontal activity. This study will examine the effect of different attentional focus : internal, external and divided attention (dual task) on prefrontal cortical activation (fNIRS) and on gait performance. Thirty young healthy voluntary adults will participate in this study.
Detailed description
The subjects will be guided to walk at a normal pace while maintaining the required attentional focus. They will walk on 30 m five times in each of the four different focus conditions :1) no instructions about the attentional focus 2) internal focus on their feet movements, 3) external focus on two lines drawn on the floor, 4) divided attention (walking while performing an arithmetic task). A fNIRS system will be used for the prefrontal cortex activation evaluation and FeetMe soles for gait analyses.
Interventions
The hemodynamic response in prefrontal cortex will be measured using an Octamon+ system (Artinis). Eight emission and two detector probes will be arranged on the participant's forehead.
Sponsors
Centre Hospitalier Régional d'Orléans
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Man or woman * 18 -30 years old * Informed consent obtained * Free from any neurological, cardiologic, rheumatologic disorders.
Exclusion criteria
* Assisted walker. * Disorders affecting gait. * Concomitant medication likely to interfere with the results.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Effects of different attentional conditions on hemodynamic response in prefrontal cortex | Baseline | Oxyhemoglobin variations in prefrontal cortex measured with fNIRS |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Effects of speed on gait. | Baseline | Gait parameters will be measured with connected soles FeetMe ® : speed |
| Effects of cadence on gait. | Baseline | Gait parameters will be measured with connected soles FeetMe ® : cadence |
| Effects of stride length on gait. | Baseline | Gait parameters will be measured with connected soles FeetMe ® : stride length |
| Effects of double support time on gait. | Baseline | Gait parameters will be measured with connected soles FeetMe ® : double support time |
Countries
France
Outcome results
None listed