highly significantp = 0.009
No significant difference was found for >1.8 s between blue- and red-light stimulus ( t (14) = -1.2, p = 0.125, d = -0.31), but highly significant difference in pupillary change to blue- compared to red-light for <1.7 s ( t (14) = -2.71, p = 0.009, d = -0.70), see Fig 4 .