title: Reply from S. C. Gandevia, S. L. Khan and J. L. Taylor.
authors.affiliation: Neuroscience Research Australia, Barker Street, Randwick, Sydney, 2031, Australia. s.gandevia.jphysiol@neura.edu.au.
authors.forename: S C
authors.initials: SC
authors.lastname: Gandevia
authors.affiliation: Neuroscience Research Australia, Barker Street, Randwick, Sydney, 2031, Australia.
authors.forename: S L
authors.initials: SL
authors.lastname: Khan
authors.affiliation: Neuroscience Research Australia, Barker Street, Randwick, Sydney, 2031, Australia.
authors.forename: J L
authors.initials: JL
authors.lastname: Taylor