Eye gaze patterns after stroke: correlates of a VR action execution and observation task

Alves, Júlio; Vourvopoulos, Athanasios; Bernardino, Alexandre; Bermúdez i Badia, Sergi

http://hdl.handle.net/10400.13/2618

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Authors

Alves, Júlio

Vourvopoulos, Athanasios

Bernardino, Alexandre

Bermúdez i Badia, Sergi

Abstract(s)

The concept of a partially shared neural circuitry between action observation and action execution in healthy participants has been demonstrated through a number of studies. However, little research has been done in this regard utilizing eye movement metrics in rehabilitation contexts.In this study we approach action observation and action execution by combining a virtual environment and eye tracking technology. Participants consisted of stroke survivors, and were required to perform a simple reachand-grab and place-and-release task with both their paretic and non-paretic arm. Results showed congruency in gaze metrics between action execution and action observation, for distribution and duration of gaze events. Furthermore, in action observation, longer smooth pursuit segments were detected when observing the representation of the paretic arm, thus providing evidence that the affected circuitry may be activated during observation of the simulated action. These results can lead to novel rehabilitation methods using virtual reality technology.

Keywords

Action execution Action observation Eye gaze Stroke Virtual reality . Faculdade de Ciências Exatas e da Engenharia

URI

http://hdl.handle.net/10400.13/2618

Citation

Alves, J., Vourvopoulos, A., Bernardino, A., & Bermúdez i Badia, S. (2014). Eye gaze patterns after stroke: correlates of a VR action execution and observation task. In Proceedings of the 8th International Conference on Pervasive Computing Technologies for Healthcare (pp. 339-342). ICST (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering).