Behrmann M, Moscovitch M, Winocur G
Rotman Research Institute of Baycrest Centre, Toronto, Ontario, Canada.
J Exp Psychol Hum Percept Perform. 1994 Oct;20(5):1068-87. doi: 10.1037//0096-1523.20.5.1068.
Although it is now well accepted that visual mental imagery and visual perception share common underlying mechanisms, there are several reports in which they are dissociated. Evidence for the separability of these processes is provided by a patient, C.K., who has a profound visual object recognition deficit attributable to an impairment in grouping or segmenting visual images. Despite this perceptual deficit, C.K. was able to draw objects in considerable detail from memory, and his knowledge of the visual appearance of objects was preserved on a variety of mental imagery tasks. Together with previous cases, these findings confirm the double dissociation between object recognition and perception. Interestingly, C.K. could also recognize newly constructed objects in his internal imagery. To accommodate these results, we propose a model in which imagery and perception are strongly associated but are also functionally specialized.
尽管现在人们普遍认为视觉心理意象和视觉感知具有共同的潜在机制，但仍有一些报告表明它们是分离的。患者C.K.提供了这些过程可分离性的证据，他因视觉图像分组或分割受损而存在严重的视觉物体识别缺陷。尽管存在这种感知缺陷，C.K.能够从记忆中相当详细地画出物体，并且他对物体视觉外观的知识在各种心理意象任务中得以保留。与先前的病例一起，这些发现证实了物体识别与感知之间的双重分离。有趣的是，C.K.也能够识别他内心意象中新构建的物体。为了适应这些结果，我们提出了一个模型，其中意象和感知紧密相关，但在功能上也具有专门性。
