Comment on "Cerebellar LTD and Learning-Dependent Timing of Conditioned Eyelid Responses"

In a recent report on eyeblink conditioning in mice, Koekkoek et al . ([ 1 ][1]) drew several conclusions that we believe are unsubstantiated and incorrect and fail to cite much of the relevant literature in this field. First, Koekkoek et al . argued that their magnetic method of measuring eyelid