Lexical access for rotated words is delayed by 100 ms but not disrupted. Grand-average ERPs (N = 13) recorded in response to rotated and standard words as a function of their lexical category. Waveforms were recorded from the left posterior temporal and midline frontal sites. Later N4 and P3 lexical effects were not observable at anterior sites for mirror words. This suggests that implicit (pre-attentive) reading was of purely perceptual nature for mirror words.