Abstract
Psychophysical and physiological studies have shown that attending to a stimulus can enhance its sensory processing. Functional imaging studies now reveal that attention can also modulate activity in sensory brain areas before stimulus onset, when the observer prepares to attend to an anticipated stimulus. These preparatory `baseline shifts' in brain activity pose many new questions, and potentially offer new insights into the neural basis of perceptual awareness.
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Acknowledgements
John Driver's research is supported by a Medical Research Council (UK) grant. Chris Frith is supported by the Wellcome Trust.
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National Institute of Mental Health: Schizophrenia
Institute of Cognitive Neuroscience, University College London
ENCYCLOPEDIA OF LIFE SCIENCES
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Driver, J., Frith, C. Shifting baselines in attention research. Nat Rev Neurosci 1, 147–148 (2000). https://doi.org/10.1038/35039083
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DOI: https://doi.org/10.1038/35039083
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