approached significancep = 0.07
(E,F) Analysis of the caudal zone of periventricular hypothalamus (Hc) (E) , posterior tuberculum (PTN) (F) showed an enlargement in cavefish that approached significance (Hc = surface fish 0.0002 ± 1.58e-5, cavefish 0.0008 ± 0.0002, t -test t = 1.603, df = 7, p = 0.07; PTN = surface fish 0.001 ± 2.85e-5, cavefish 0.0004 ± 8.71e-5, t -test t = 1.627, df = 6, p = 0.07).