Asada Tomohiko, Takayama Yoshihiro, Oita Jiro, Fukuyama Hidenao
a Department of Brain Functional Imaging , Human Brain Research Center, Kyoto University, Graduate School of Medicine , Kyoto , Japan.
Neurocase. 2014 Apr;20(2):163-74. doi: 10.1080/13554794.2012.741254. Epub 2013 Feb 15.
We observed a 59-year-old right-handed man with an infarction in his right-middle cerebral artery that included the parietal lobe, who abnormally manipulated mental images in the horizontal direction, resulting in calculation disturbances. Three years later, the patient suffered an infarction in the left parietal lobe and displayed abnormalities during the creation of mental images; i.e., he rotated them in the vertical direction, which again resulted in calculation disturbances. These mental imagery disturbances might indicate that a common acalculia mechanism exists between the right and left hemispheres.
我们观察了一名59岁的右利手男性，其右侧大脑中动脉梗死，梗死区域包括顶叶，该患者在水平方向上异常操作心理意象，导致计算障碍。三年后，该患者左侧顶叶梗死，在心理意象构建过程中出现异常，即他在垂直方向上旋转心理意象，这再次导致计算障碍。这些心理意象障碍可能表明左右半球之间存在共同的失算机制。
