14 June 2011 Robot-assisted motor activation monitored by time-domain optical brain imaging
Author Affiliations +
Robot-assisted motor rehabilitation proved to be an effective supplement to conventional hand-to-hand therapy in stroke patients. In order to analyze and understand motor learning and performance during rehabilitation it is desirable to develop a monitor to provide objective measures of the corresponding brain activity at the rehabilitation progress. We used a portable time-domain near-infrared reflectometer to monitor the hemodynamic brain response to distal upper extremity activities. Four healthy volunteers performed two different robot-assisted wrist/forearm movements, flexion-extension and pronation-supination in comparison with an unassisted squeeze ball exercise. A special headgear with four optical measurement positions to include parts of the pre- and postcentral gyrus provided a good overlap with the expected activation areas. Data analysis based on variance of time-of-flight distributions of photons through tissue was chosen to provide a suitable representation of intracerebral signals. In all subjects several of the four detection channels showed a response. In some cases indications were found of differences in localization of the activated areas for the various tasks.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
O. Steinkellner, O. Steinkellner, H. Wabnitz, H. Wabnitz, S. Schmid, S. Schmid, R. Steingräber, R. Steingräber, H. Schmidt, H. Schmidt, J. Krüger, J. Krüger, R. Macdonald, R. Macdonald, } "Robot-assisted motor activation monitored by time-domain optical brain imaging", Proc. SPIE 8088, Diffuse Optical Imaging III, 808807 (14 June 2011); doi: 10.1117/12.889505; https://doi.org/10.1117/12.889505

Back to Top