Title :
Changes in brain activity due to the sudden apparition of an obstacle during gait
Author :
Salazar-Varas, R. ; Costa, A. ; Ubeda, A. ; Ianez, E. ; Azorin, J.M.
Author_Institution :
Center for Res. & Adv. Studies (Cinvestav) at Monterrey, Apodaca, Mexico
Abstract :
This work presents a study of the electroencephalographic (EEG) signals when an obstacle suddenly appears while a subject walks. The main goal is to evaluate how the brain activity changes due to the presence of an obstacle in order to apply this information in the control of a wearable robot to perform lower limb rehabilitation tasks. Different responses were evaluated and the results reveal the existence of a change in the EEG potential when an obstacle appears and the subject reacts immediately to it. The potential has a similar behavior to the early stage of the contingent negativity variation (CNV) which reflects the processing of a warning signal and the anticipation to the upcoming event.
Keywords :
bioelectric potentials; electroencephalography; gait analysis; medical robotics; medical signal processing; patient rehabilitation; EEG potential; brain activity; contingent negativity variation; electroencephalographic signals; gait analysis; lower limb rehabilitation tasks; obstacle sudden apparition; upcoming event anticipation; warning signal processing; wearable robot control; Brain; Electric potential; Electrodes; Electroencephalography; Laser modes; Robots; Scalp;
Conference_Titel :
Neural Engineering (NER), 2015 7th International IEEE/EMBS Conference on
Conference_Location :
Montpellier
DOI :
10.1109/NER.2015.7146572
