Table 1.

Pre- and post-neurofeedback values of relative gamma (30–40 Hz) power and changes in percent (pre-minus-post) for evoked and induced gamma responses to target and non-target drug cues at different topographies.

EEG Channel/condition	Early Evoked Gamma Power					Late Induced Gamma Power
	Pre	Post	% Change F(1,14)		Sig.	Pre	Post	% Change F(1,14)		Sig.
AFz-Non-target drug	0.399	0.347	−15.0	18.8	0.001 **	0.436	0.297	−46.8	182.4	0.000***
AFz-Target drug	0.520	0.499	−4.2	0.4	0.524	0.563	0.472	−19.3	28.2	0.000***
F1-Non-target drug	0.392	0.321	−22.1	8.5	0.014 *	0.429	0.355	−20.8	8.1	0.014*
F1-Target drug	0.495	0.467	−6.0	1.0	0.332	0.552	0.436	−26.6	15.0	0.003**
F2-Non-target drug	0.400	0.319	−25.4	18.1	0.001***	0.427	0.360	−18.6	7.3	0.018*
F2-Target drug	0.523	0.478	−9.4	7.2	0.023*	0.563	0.445	−26.5	17.4	0.002**
F7-Non-target drug	0.382	0.318	−20.1	11.4	0.006**	0.426	0.309	−37.9	59.1	0.000***
F7-Target drug	0.46	0.485	5.2	0.9	0.376	0.546	0.475	−14.9	6.5	0.029*
F8- Non-target drug	0.388	0.299	−29.8	77	0.000***	0.436	0.314	−38.9	37	0.000***
F8-Target drug	0.499	0.469	−6.4	2.6	0.139	0.476	0.467	−1.9	0.0	0.924
P3- Non-target drug	0.387	0.276	−40.2	22.5	0.001**	0.419	0.285	−47.0	55.0	0.000***
P3-Target drug	0.513	0.442	−16.1	4.1	0.071	0.432	0.438	1.4	0.0	0.958
P4- Non-target drug	0.399	0.325	−22.8	5.5	0.039*	0.436	0.322	−35.4	20.5	0.001**
P4- Target drug	0.465	0.453	−2.6	0.2	0.641	0.536	0.457	−17.3	12.3	0.006**
P7- Non-target drug	0.386	0.281	−37.4	23.7	0.000***	0.417	0.279	−49.5	120.8	0.000***
P7-Target drug	0.496	0.433	−14.5	3.7	0.082	0.554	0.433	−27.9	24.3	0.001**
P8- Non-target drug	0.379	0.326	−16.3	5.0	0.048*	0.438	0.313	−39.9	38.7	0.000***
P8-Target drug	0.456	0.465	1.9	0.1	0.71	0.560	0.465	−20.4	26.1	0.001**