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. 2011 Oct 26;37(4):865–875. doi: 10.1038/npp.2011.261

Table 1. Behavioral Results of the Distracting Visual Vigilance Task.

  Ketamine group
Psilocybin group
  Placebo Ketamine P-value Placebo Psilocybin P-value
RT (ms) 331±4.3 350±5.2 0.001 340±4.6 360±5.1 0.001
d 1.9±0.27 1.1±0.22 0.01 1.6±0.28 0.8±0.12 0.01

Mean reaction times (RT) and sensitivity indices (d')±SE. Both measures were significantly worsened by both drugs, but did not differ significantly between drugs.