诵读困难者的视杆细胞和视锥细胞是否异常？
Are rods and cones of dyslexics anomalous?
作者信息
Cohn T E
机构信息
School of Optometry, University of California-Berkeley 94720.
出版信息
Percept Mot Skills. 1989 Aug;69(1):91-4. doi: 10.2466/pms.1989.69.1.91.
Grosser and Spafford (in this journal, 1989) have advanced an hypothesis and presented measurements which they believe support the idea of an excess of cones in the peripheral retinae of dyslexics. This note points out that their hypothesis is based on the erroneous assumption that normals have no peripheral cones. Further, their data can be explained by at least two alternative, though uninteresting, methodological hypotheses, that uncontrolled eye movements or experimenter suggestion (or both) could have produced their results. Finally, the requisite methods for assessing color vision, and the cones, were not met in the study.
格罗斯和斯帕福德（本期刊，1989年）提出了一个假说，并给出了他们认为支持诵读困难者周边视网膜中视锥细胞过多这一观点的测量结果。本注释指出，他们的假说基于一个错误的假设，即正常人没有周边视锥细胞。此外，他们的数据至少可以由另外两个虽无趣但不同的方法学假说解释，即未受控制的眼球运动或实验者暗示（或两者皆有）可能产生了他们的结果。最后，该研究未满足评估色觉和视锥细胞的必要方法。
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