Béné Raphael, Lovrencić-Huzjan Arijana, Azman Drazen, Strineka Maja, Budisić Mislav, Vuković Vlasta, Rastovcan Bosko, Demarin Vida
University Department of Neurology, Reference Center for Neurovascular Disorders, Ministry of Health and Social Welfare of the Republic of Croatia, Sestre milosrdnice University Hospital, Zagreb, Croatia.
Acta Clin Croat. 2009 Sep;48(3):305-10.
Mirror illusion means that standing in front of a mirror placed in sagittal plane, with the head tilted on one side and one arm stretched forward, one side of the body is reflected as if it were the other side by mirror visual feedback. The aim of this study was to monitor blood flow changes in middle cerebral artery (MCA) by use of transcranial Doppler (TCD) in individuals during motor tasks and tasks using mirror visual feedback. Eight young healthy volunteers (four male and four female) were included in the study. TCD recording in MCA was done during each task consisting of various motor and visuomotor activities using mirror illusion. Both MCA mean blow flow velocity (MBFV) was measured while the subjects were seated in a comfortable chair. The MCA MBFV recordings are presented as baseline values. During the illusion of motor hand activation, when the subject was making right hand flexions and watching its reflection in the mirror, with the left hand immobile, an increase was observed the contralateral MCA MBFV (task 3, +4.5% baseline value; P = 0.017). Furthermore, when the subject made left hand flexions while watching the reflection of the immobile right hand in the mirror, there was an increase in the right MCA MBFV (+5.6% baseline value; P = 0.044), which was more pronounced than during the illusion of motor hand activation (task 3) and less than during direct vision of hand flexion (task 2, +6.3% baseline value; P = 0.005). Our data showed that visual illusion of action, as well as direct action observation could increase the MCA MBFV, which brings forward the possible usage of mirror illusion as a tool in motor neurorehabilitation.
镜像错觉是指站在矢状面放置的镜子前，头部向一侧倾斜，一只手臂向前伸展，身体的一侧通过镜子视觉反馈被反射成另一侧。本研究的目的是使用经颅多普勒（TCD）监测个体在运动任务和使用镜像视觉反馈的任务期间大脑中动脉（MCA）的血流变化。该研究纳入了八名年轻健康志愿者（四名男性和四名女性）。在使用镜像错觉的各种运动和视觉运动活动组成的每个任务期间，对MCA进行TCD记录。当受试者坐在舒适的椅子上时，测量双侧MCA平均血流速度（MBFV）。MCA的MBFV记录作为基线值呈现。在运动手激活错觉期间，当受试者右手屈曲并观察其在镜子中的反射，而左手不动时，观察到对侧MCA的MBFV增加（任务3，较基线值增加4.5%；P = 0.017）。此外，当受试者左手屈曲同时观察镜子中不动的右手的反射时，右侧MCA的MBFV增加（较基线值增加5.6%；P = 0.044），这比运动手激活错觉期间（任务3）更明显，但比直接观察手屈曲期间（任务2，较基线值增加6.3%；P = 0.005）要小。我们的数据表明，动作的视觉错觉以及直接动作观察均可增加MCA的MBFV，这提出了将镜像错觉用作运动神经康复工具的可能性。
