Figure 2

Cognitive performance in chronic shift workers under circadian alignment/misalignment. (A) Sustained attention (PVT 10% slowest reaction times and PVT lapses) worsened under circadian misalignment, particularly after 11 h of scheduled wakefulness, as compared to circadian alignment. (B) Information processing (number of correct DSST responses/min) performance improved only under circadian alignment, particularly when DSST assessments occurred 11 h after scheduled wakefulness, as compared to circadian misalignment. (C) Visual-motor performance (number of TKT losses) became progressively worse under circadian misalignment, particularly after 7 h of scheduled wakefulness, as compared to circadian alignment. White and black circles correspond to individual data under circadian alignment and misalignment conditions, respectively. Data correspond to mean ± standard error of the mean, *p < 0.05 (see results for statistics).