tailieunhanh - Báo cáo khoa hoc:" Visual error augmentation enhances learning in three dimensions"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Visual error augmentation enhances learning in three dimensions | Sharp et al. Journal of NeuroEngineering and Rehabilitation 2011 8 52 http content 8 1 52 Iril JOURNAL OF NEUROENGINEERING NCR AND REHABILITATION RESEARCH Open Access Visual error augmentation enhances learning in three dimensions Ian Sharp1 2 Felix Huang 2 and James Patton1 2 Abstract Because recent preliminary evidence points to the use of Error augmentation EA for motor learning enhancements we visually enhanced deviations from a straight line path while subjects practiced a sensorimotor reversal task similar to laparoscopic surgery. Our study asked 10 healthy subjects in two groups to perform targeted reaching in a simulated virtual reality environment where the transformation of the hand position matrix was a complete reversal-rotated 180 degrees about an arbitrary axis hence 2 of the 3 coordinates are reversed . Our data showed that after 500 practice trials error-augmented-trained subjects reached the desired targets more quickly and with lower error differences of seconds and cm Maximum Perpendicular Trajectory deviation when compared to the control group. Furthermore the manner in which subjects practiced was influenced by the error augmentation resulting in more continuous motions for this group and smaller errors. Even with the extreme sensory discordance of a reversal these data further support that distorted reality can promote more complete adaptation learning when compared to regular training. Lastly upon removing the flip all subjects quickly returned to baseline rapidly within 6 trials. Background Since the beginning of tool use humans have been challenged with operating external devices that do not necessarily match natural limb movement. For example through repetitive practice a novice computer user has to learn the remapping of anterior mouse motion to vertical cursor motion on the screen. Such repetitive experiences result in the learning of a neural representation that predicts the consequences of motor actions.