Ellison, A. Investigations of Spatial Attention. In E. M. Wassermann, A. V. Peterchev, Z. Ulf, H. Lisanby Sarah, H. R. Siebner, & V. Walsh (Eds.), The Oxford Handbook of Transcranial Stimulation. (2nd ed.). Oxford University Press. https://doi.org/10.1093/oxfordhb/9780198832256.013.28