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Published online by Cambridge University Press: 19 May 2011
The target article by Thach outlines the Brindley-Marr-Albus-Gilbert (BMAG) learning theory and extends its validity to cognitive processes. We provide here an alternative explanation for the positron emission tomography (PET) data cited by Thach in support of the BMAG model. We also comment on the anatomical and physiological basis of the BMAG model and Houk's adjustable pattern generator (APG), both models being based on similar assumptions, [HOUK et al.; THACH]