Reinforcement of Self-Regulated Brain Activity in Schizophrenia Patients Undergoing Rehabilitation

Table 4

Correlations between the magnitude of changes from pretherapy to posttherapy measurements in the group of patients participating in GSR-BF training sessions (Group 2).

Variable	Group 2 (BF training program)
	PANSS POS	PANSS NEG	PANSS GEN	PANSS TOT	BDNF (ng/ml)	QEEG theta/beta	QEEG theta/SMR	N1 ampl.	P2 latency
PANSS-POSITIVE	—	0.737	0.851	0.877	−0.770	0.171	0.274	−0.106	0.074
PANSS-NEGATIVE	0.737	—	0.846	0.920	−0.857	0.004	0.018	−0.228	−0.061
PANSS-GENERAL	0.851	0.846	—	0.956	−0.804	0.112	0.169	−0.103	0.172
PANSS-TOTAL	0.877	0.920	0.956	—	−0.832	0.149	0.209	−0.166	0.061
BDNF (ng/ml)	−0.770	−0.857	−0.804	−0.832	—	0.123	0.057	0.153	0.296
QEEG theta/beta	0.171	0.004	0.112	0.149	0.123	—	0.875	−0.161	−0.127
QEEG theta/SMR	0.274	0.018	0.169	0.209	0.057	0.875	—	−0.298	−0.297
N1 (amplitude)	−0.106	−0.228	−0.103	−0.166	0.153	−0.161	−0.298	—	0.035
P2 (latency)	0.074	−0.061	0.172	0.061	0.296	−0.127	−0.297	0.035	—

Legend: correlations were assessed using Spearman’s rank correlation coefficients (italics) and Pearson’s ; statistically significant correlations () are marked with an asterisk ().