Up to 6% of the population is estimated to have a math-learning disability called developmental dyscalculia, similar to dyslexia but with numerals instead of letters. Many more people say they find math difficult. People with developmental dyscalculia also may have trouble with daily tasks, such as remembering phone numbers and understanding bills.
据估计,多达6%的人患有一种名叫“发展性计算障碍”(developmental dyscalculia)的数学学习缺陷。它跟阅读障碍(dyslexia)相似,只不过有问题的是数字而不是文字。另外还有很多人表示他们觉得数学很难。患有发展性计算障碍的人执行一些日常任务也可能存在困难,比如电话号码的记忆、账单的理解等。
Whether transcranial electrical stimulation proves to be a useful cognitive enhancer remains to be seen. Dr. Cohen Kadosh first thought about the possibility as a university student in Israel, where he conducted an experiment using transcranial magnetic stimulation, a tool that employs magnetic coils to induce a more powerful electrical current.
经颅电刺激术是否能够成为一种有用的认知促进方法,仍然有待观察。科恩・卡多什博士最初是在以色列上大学时想到了这种可能性。当时他用经颅磁刺激术(transcranial magnetic stimulation)做了一次实验(经颅磁刺激术采用磁性线圈来形成更强大的电流。)
He found that he could temporarily turn off regions of the brain known to be important for cognitive skills. When the parietal lobe of the brain was stimulated using that technique, he found that the basic arithmetic skills of doctoral students who were normally very good with numbers were reduced to a level similar to those with developmental dyscalculia.
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