Cortical response to psycho-physiological changes in auto-adaptive robot assisted gait training

Herbert Jelinek, Katherine G. August, Md. Hasan Imam, Ahsan H. Khandoker, Alexander Koenig, Robert Riener

Research output: Book chapter/Published conference paperConference paperpeer-review

2 Citations (Scopus)

Abstract

Robot-assisted treadmill training improves motor function and walking ability in neurologically impaired patients. However, despite attention having been shown to playa role in training success, psychological responsiveness to task difficulty and motivational levels at task onset have not been measured. Seven healthy subjects participated in a robot-assist treadmill training task. Subjects engaged in a virtual task with varying difficulty levels that was shown to induce a feeling of being bored, excited and over-stressed. The participants' mental engagement was measured using the ECG-based heart rate variability in real time, during gait training as a proxy for EEG and psychological test batteries. Heart rate variability(HRV), which has been shown to reflect cortical engagement for both cognitive and physical tasks, was measured using nonlinear measures obtained from the Poincaré plot. We show that the cortical response to the task measured with HRV varies in relation to the level of mental engagement in response to the difficulty level of the virtual task. From these results we propose that nonlinear measures quantify cortical response /motivational level to robot-assist motor learning tasks and that the adaptation to the task is dependent on the level of motivation
Original languageEnglish
Title of host publicationProceedings of the 2011 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Place of PublicationUnited States
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages7409-7412
Number of pages4
DOIs
Publication statusPublished - 2011
Event2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Boston Marriott Copley Place Hotel, Boston, United States
Duration: 30 Aug 201103 Sep 2011

Conference

Conference2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Country/TerritoryUnited States
CityBoston
Period30/08/1103/09/11
OtherThe annual conference of EMBS averages 2000 attendees from over 50 countries. The scope of the conference is general in nature to focus on the interdisciplinary fields of biomedical engineering. Themes included but not limited to are: Imaging, Biosignals, Biorobotics, Bioinstrumentation, Neural, Rehabilitation, Bioinformatics, Healthcare IT, Medical Devices, etc.

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