期刊
NATURE NEUROSCIENCE
卷 8, 期 5, 页码 679-685出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nn1444
关键词
-
资金
- NEI NIH HHS [R01 EY014202, R01-EY14202] Funding Source: Medline
- NIMH NIH HHS [P50 MH062196, P50-MH62196] Funding Source: Medline
The potential for human neuroimaging to read out the detailed contents of a person's mental state has yet to be fully explored. We investigated whether the perception of edge orientation, a fundamental visual feature, can be decoded from human brain activity measured with functional magnetic resonance imaging (fMRI). Using statistical algorithms to classify brain states, we found that ensemble fMRI signals in early visual areas could reliably predict on individual trials which of eight stimulus orientations the subject was seeing. Moreover, when subjects had to attend to one of two overlapping orthogonal gratings, feature-based attention strongly biased ensemble activity toward the attended orientation. These results demonstrate that fMRI activity patterns in early visual areas, including primary visual cortex (V1), contain detailed orientation information that can reliably predict subjective perception. Our approach provides a framework for the readout of fine-tuned representations in the human brain and their subjective contents.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据