Decisional impairments in cocaine addiction, reward bias, and cortical oscillation “unbalance”

Figures & data

Table 1 Demographic features by group

	SUD	CG
Age, mean (SD)	53.3 (4.33)	52.10 (3.89)
Education, mean (SD)	12.34 (2.73)	12.11 (2.34)
Sex (% female), mean (SD)	53.32 (2.98)	54.32 (2.75)
Race	White
Years of regular substance abuse, mean (SD)	14.42 (2.54)

Abbreviations: SUD, substance use disorder; CG, control group.

Figure 1 Mean values of LTA for each frequency band distinctly for the SUD group and CG as a function of condition (AD versus DD).

Notes: (A) Delta; (B) theta; (C) alpha; and (D) beta.
Abbreviations: AD, advantageous decks; DD, disadvantageous decks; SUD, substance use disorder; CG, control group; LTA, log-transformed asymmetry.

Table 2 Mean and SD values of rI as a function of group (SUD versus CG) and block

	rI
	Mean	SD
SUD
Block 1	−0.05	0.02
Block 2	−0.11	0.02
Block 3	−0.03	0.01
Block 4	0.06	0.03
Block 5	0.05	0.04
CG
Block 1	−0.08	0.03
Block 2	1.89	0.05
Block 3	3.17	0.02
Block 4	5.12	0.08
Block 5	6.90	0.05

Abbreviations: SD, standard deviation; rI, response index; SUD, substance use disorder; CG, control group.

Table 3 Mean and SD values of LTA as a function of group (SUD versus CG) and condition (AD versus DD) for each frequency band

LTA
Frequency band	SUD				CG
	AD		DD		AD		DD
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Delta	0.02	0.003	0.16	0.001	0.05	0.002	0.06	0.001
Theta	0.05	0.002	0.13	0.004	0.06	0.002	0.04	0.002
Alpha	0.01	0.002	0.12	0.003	0.05	0.001	0.04	0.003
Beta	0.03	0.001	−0.08	0.004	0.07	0.002	0.06	0.001

Abbreviations: SD, standard deviation; LTA, log-transformed asymmetry; SUD, substance use disorder; CG, control group; AD, advantageous decks; DD, disadvantageous decks.

Figure 2 Results of the sLORETA analysis.

Notes: The image shows the sLORETA slices in the Talairach space for the estimated source of activation differences between CG and SUD for DD, respectively, for (A) delta, (B) theta, (C) alpha, and (D) beta.
Abbreviations: sLORETA, standardized low-resolution brain electromagnetic tomography; CG, control group; SUD, substance use disorder; DD, disadvantageous decks.