Mirror writing refers to the production of individual letters, whole words or sentences in reverse direction. Unintentional mirror writing has been observed in young children and brain-damaged people and interpreted as the manifestation of different cognitive impairments. We report on a mirror writing patient following left hemisphere stroke and the mirror writing phenomena in one sample of children learning to write. We propose a unitary account of mirror writing as the unavailability of the appropriate movement direction representation, either because the right configuration has yet to be specified fully (children learning to write) or because of its damage (acquired brain injury). For this reason, we propose that the lack of directional information relevant to writing be labelled 'directional apraxia'.

中文翻译：

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“方向性失用症”：是脑损伤后或在正常幼儿中发现的镜面书写的单一说明。

镜像写作是指以相反的方向产生单个字母，整个单词或句子。在幼儿和脑部受损的人中发现了无意的镜子书写，并被解释为不同认知障碍的表现。我们报告了左半球卒中后有镜面书写的患者和一个学习书写的儿童样本中的镜面书写现象。我们建议对镜面书写进行统一说明，因为没有适当地指定运动方向，这是因为尚未完全指定正确的配置（儿童学习书写）或由于其损坏（后天性脑损伤）。因此，我们建议将与写作有关的方向信息的缺乏标记为“方向性失用症”。