For the article “The Neural Coding of Stimulus Intensity: Linking the Population Response of Mechanoreceptive Afferents with Psychophysical Behavior,” by Michael A. Muniak, Supratim Ray, Steven S. Hsiao, J. Frank Dammann, and Sliman J. Bensmaia, which appeared on pages 11687–11699 of the October 24, 2007 issue, the formula for rmax (Eq. 6) (page 11695, in Results, Population firing rate), is incorrect. The fraction within the parentheses should be flipped. The correct formula, used in all subsequent calculations and derivations, is as follows:
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