Fig. 3.
Experiment 2, VDS I: determination of baseline impulsivity. Naïve rats show different levels of impulsivity in the VDS test (A). Based on the 3sf PRratio (B), animals were divided in half in HI and LI. HI rats are more impulsive on the test (D) but not during training (C). Rats selected for SNI or Sham surgeries, presented similar impulsive behavior (E, F). Data presented as mean ± SEM. * p < 0.05 *** p < 0.001. 3si – initial trials with 3 s’ delay; 6 s – trials with 6 s’ delay; 12 s – trials with 12 s’ delay; 3sf – final trials with 3 s’ delay; HI – High impulsive; LI – Low Impulsive; PR – Prematurity rate; SNI- Spared Nerve Injury; VDS – Variable delay-to-signal.