The single-epoch fMRI design: validation of a simplified paradigm for the collection of subjective ratings. - Tetsuo Koyama; John G. McHaffie; Paul J. Laurienti; Robert C. Coghill (NeuroImage, 2003)

A tale of two itches. Common features and notable differences in brain activation evoked by cowhage and histamine induced itch. - Alexandru D. P. Papoiu; Robert C. Coghill; Robert A. Kraft; Hui Wang; Gil Yosipovitch (NeuroImage, 2012)