(21) Auditory and visual sensory representations in human prefrontal cortex as revealed by stimulus-evoked spike-wave complexes.   Clarke JM, Halgren E, Scarabin JM and Chauvel P.   1995.   Brain, volume 118, pages 473-484.

(22) Chemically defined feedback connections from infragranular layers of sensory association cortices in the rat.   Bai WZ, Ishida M and Arimatsu Y.   2004.   Neuroscience, volume 123, pages 257-267.

(23) From sensation to cognition.   Mesulam MM.   1998.   Brain, volume 121, pages 1013-1052.

(24) The organization of the cortical motor system: new concepts.   Rizzolatti G, Luppino G and Matelli M.   1998.   Electroencephalography and Clinical Neurophysiology, volume 106, pages 283-296.
     With reference to the use of a singular noun with a plural verb, "there are no such things as multipurpose areas for space or body schema..." should have read "schemas" or "schemata".
     With reference to ellipsis, the same statement as above needed to be expanded to make sense, because it could be argued from the authors' other statements that the posterior parietal cortex was a multipurpose area for space or body schemas, the matter being one of definition.

(25) Some proprioceptive influences on the perceptual representation of body shape and orientation.   Lackner JR.   1988.   Brain, volume 111, pages 281-297.

(26) Dynamic organization of the somatosensory cortex induced by motor activity.   Braun C, Heinz U, Schweizer R, Wiech K, Birbaumer N and Topka H.   2001.   Brain, volume 124, pages 2259-2267.
     With reference to trying not to find what one is looking for, the researchers chose not to stimulate D1 and D5 in the hand that was not writing, and they chose not to model a dipole for the activity ipsilateral to the stimulation, both of which choices reduced the number of possible controls which might have influenced their findings. The researchers did not discuss these choices.

(27) The subjective experience of pain: Where expectations become reality.   Koyama T, McHaffie JG, Laurienti PJ and Coghill RC.   2005.   Proceedings of the National Academy of Sciences of the United States of America, volume 102, pages 12950-12955.
    With reference to the experimental design, the experiment cannot be repeated because of the lack of clarity about what the subjects were told to expect. Did the subjects consent to false signals? Was the blinding procedure successful?

(28) Does anticipation of pain affect cortical nociceptive systems?   Porro CA, Baraldi P, Pagnoni G, Serafini M, Facchin P, Maieron M and Nichelli P.   2002.   Journal of Neuroscience, volume 22, pages 3206-3214.

(29) Wild chimpanzees show population-level handedness for tool use.   Lonsdorf EV and Hopkins WD.   2005.   Proceedings of the National Academy of Sciences of the United States of America, volume 102, pages 12634-12638.

(30) The differential effects of extremity and movement side on the scalp distribution of the readiness potential (RP) and the stimulus-preceding negativity (SPN).   Damen EJP, Freude G and Brunia, CHM.   1996.   Electroencephalography and Clinical Neurophysiology, volume 99, pages 508-516.