60, P = 0.004) and Consolidation Period (F3,90 = 4.23, selleck chemical P = 0.017). Scheffe’s
post-hoc tests revealed that the main effect of Group can be attributed to significantly greater sequence-specific offline learning in the 1 Hz group compared with the Control and 5 Hz rTMS groups (P = 0.030 and 0.003, respectively) (Fig. 4A – dark grey bars). The main effect of Sequence can be attributed to greater consolidation of implicit motor learning from Day 4 to the retention test compared with consolidation between Day 2 to Day 3 and Day 3 to Day 4 (P < 0.001 and P = 0.024, respectively) (Fig. 4B – dark grey bars). The Group by Sequence anova on spatial error revealed main effects of Group (F2,30 = 5.10, P < 0.012) and Consolidation Period (F3,90 = 4.09, P < 0.014). The main effects of Group (Fig. 4A – light grey bars) and Consolidation Period (Fig. 4B – light grey bars) reveal that the changes in RMSE can be attributed to consolidation of spatial accuracy. The mixed-measures Group
by Sequence anova with time lag as the dependent measure failed to reveal any effects. None of PLX4032 in vitro the analyses on RMSE, spatial accuracy or lag revealed any effects associated with change in implicit performance from Block 1 to Block 3 on each day of practice. Online learning within each practice day was consistent for all groups. Three of the 11 individuals in the 5 Hz rTMS group acquired sufficient explicit awareness of the repeating sequence to be able to recognize it at the recognition test. This was also the case for two individuals in the 1 Hz rTMS group and one individual in
the Control group. The mixed-measures Group by Time anovas performed on RMT and MEP amplitude failed to reveal any significant effects of the varied forms of rTMS following continuous tracking on excitability in M1 (Table 2). The present study is the first to demonstrate the cumulative impact of rTMS over PMd immediately following practice upon consolidation of implicit sequence-specific motor learning. While all three experimental groups (1 Hz rTMS, 5 Hz rTMS and sham stimulation) demonstrated improvement in performance over time, only the group receiving 1 Hz rTMS Resveratrol over the PMd immediately following task practice enhanced offline learning of an implicit motor skill (Experiment 1). Enhanced implicit sequence-specific learning with 1 Hz rTMS following practice was largely explained by improved spatial rather than temporal accuracy of movements (Experiment 1). Furthermore, enhanced motor learning associated with 1 Hz rTMS over the PMd during early consolidation does not appear to be attributable to spread of stimulation to M1 or to PMd to M1 connections, as M1 excitability was not changed by rTMS over PMd (Experiment 2). The enhancement of motor learning following application of 1 Hz rTMS over PMd immediately after practice of the continuous visuomotor tracking task differs from our previous results (Boyd & Linsdell, 2009).