An important experimental finding, using fMRI, to show that attention is comprised of distinct mechanisms with separable neural mechanisms
Corbetta, M., Kincade, J. M., Ollinger, J. M., McAvoy, M. P., & Shulman, G. L. (2000). Voluntary orienting is dissociated from target detection in human posterior parietal cortex. Nature Neuroscience, 3(3), 292–297.
A recent overview, drawing heavily on primate electrophysiology, on the neural mechanisms of attention and how this is linked to actions such as saccades
Bisley, J. W. & Goldberg, M. E. (2010). Attention, intention, and priority in the parietal lobe. In S. E. Hyman (Ed.), Annual Review of Neuroscience, 33, 1–21.