nearly significantp = 0.053
Here, the previous observation was replicated that there were significantly more low peak stimulations in the shell than core in controls (low block, χ 2 = 10.18, p = 0.0014), but core stimulations produced a greater number of higher peaks than shell in the medium-high block ( χ 2 = 5.33, p = 0.021) and a nearly significant trend in the high peak block ( χ 2 = 3.73, p = 0.053).