Over the past decade, object recognition work has confounded voxel response detection with potential voxel class identification. Consequently, the claim that there are areas of the brain that are necessary and sufficient for object identification cannot be resolved with existing associative methods (e.g., the general linear model) that are dominant in brain imaging methods. In order to explore this controversy we trained full brain (40,000 voxels) single TR (repetition time) classifiers on data from 10 subjects in two different recognition tasks on the most controversial classes of stimuli (house and face) and show 97.4% median out-of-sample (unseen TRs) generalization. This performance allowed us to reliably and uniquely assay the classifier's voxel diagnosticity in all individual subjects' brains. In this two-class case, there may be specific areas diagnostic for house stimuli (e.g., LO) or for face stimuli (e.g., STS); however, in contrast to the detection results common in this literature, neither the fusiform face area nor parahippocampal place area is shown to be uniquely diagnostic for faces or places, respectively.

译文

在过去的十年中,对象识别工作使体素响应检测与潜在的体素类识别相混淆。因此,关于存在用于对象识别的必要和足够的大脑区域的主张不能用在大脑成像方法中占主导地位的现有关联方法 (例如,一般线性模型) 来解决。为了探索这一争议,我们训练了全脑 (40,000体素) 单个TR (重复时间) 分类器,对来自两个不同识别任务中最具争议的刺激类别 (房屋和面部) 的10个受试者的数据进行分类器,并显示97.4% 的样本外中位数 (看不见的TRs) 泛化。这种表现使我们能够可靠,独特地测定分类器在所有个体受试者大脑中的体素诊断能力。在这种两类情况下,可能存在针对房屋刺激 (例如LO) 或面部刺激 (例如STS) 的特定诊断区域; 但是,与该文献中常见的检测结果相反,梭形面部区域和海马旁位置区域均未分别显示出对面部或位置的唯一诊断。

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