Attention but not awareness modulates the BOLD signal in the human V1 during binocular suppression.

@article{Watanabe2011AttentionBN,
  title={Attention but not awareness modulates the BOLD signal in the human V1 during binocular suppression.},
  author={Masataka Watanabe and Kang Cheng and Yusuke Murayama and Kenichi Ueno and T. Asamizuya and Keiji Tanaka and Nikos K. Logothetis},
  journal={Science},
  year={2011},
  volume={334 6057},
  pages={829-31}
}
Although recent psychophysical studies indicate that visual awareness and top-down attention are two distinct processes, it is not clear how they are neurally dissociated in the visual system. Using a two-by-two factorial functional magnetic resonance imaging design with binocular suppression, we found that the visibility or invisibility of a visual target led to only nonsignificant blood oxygenation level-dependent (BOLD) effects in the human primary visual cortex (V1). Directing attention… CONTINUE READING
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