Mean pre-scores minus mean post-scores in trait anxiety. For Alpha-Theta (AT), SMR-Theta (SMR), and control (C) groups. There is a significant decrease in trait anxiety (i.e. in the past few weeks) score for the SMR group. No reliable changes are present in either the control or AT groups. Error bars signify the standard error of the mean (SEM).
Ros et al. BMC Neuroscience 2009 10:87 doi:10.1186/1471-2202-10-87