tailieunhanh - Báo cáo hóa học: " Multi-finger coordination in healthy subjects and stroke patients: a mathematical modelling approach"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Multi-finger coordination in healthy subjects and stroke patients: a mathematical modelling approach | JWl JOURNAL OF NEUROENGINEERING 1MR AND REHABILITATION Multi-finger coordination in healthy subjects and stroke patients a mathematical modelling approach Carpinella et al. Carpinella et al. Journal of NeuroEngineering and Rehabilitation 2011 8 19 http content 8 1 19 20 April 2011 BioMed Central Carpinella et al. Journal of NeuroEngineering and Rehabilitation 2011 8 19 http content 8 1 19 Iril JOURNAL OF NEUROENGINEERING NCR AND REHABILITATION RESEARCH Open Access Multi-finger coordination in healthy subjects and stroke patients a mathematical modelling approach Ilaria Carpinella 1 Johanna Jonsdottir2 and Maurizio Ferrarin1 Abstract Background Approximately 60 of stroke survivors experience hand dysfunction limiting execution of daily activities. Several methods have been proposed to objectively quantify fingers joints range of motion ROM while few studies exist about multi-finger coordination during hand movements. The present work analysed this aspect by providing a complete characterization of spatial and temporal aspects of hand movement through the mathematical modelling of multi-joint finger motion in healthy subjects and stroke patients. Methods Hand opening and closing movements were examined in 12 healthy volunteers and 14 hemiplegic stroke survivors by means of optoelectronic kinematic analysis. The flexion extension angles of metacarpophalangeal MCPJ and proximal interphalangeal joints IPJ of all fingers were computed and mathematically characterized by a four-parameter hyperbolic tangent function. Accuracy of the selected model was analysed by means of coefficient of determination R2 and root mean square error RMSE . Test-retest reliability was quantified by intraclass correlation coefficient ICC and test-retest errors. Comparison between performances of healthy controls and stroke subjects were performed by analysing possible differences in parameters describing angular and temporal aspects of hand .