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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Pharmacol Biochem Behav. 2008 Jul 11;91(1):155–164. doi: 10.1016/j.pbb.2008.06.025

Figure 6.

Figure 6

Group average topographic head maps of Z-scores for coherence in delta (1.5-3.5 Hz), theta (3.5-7.5), alpha (7.5-12.5 Hz) and beta (12.5-25 Hz) frequency bands averaged across five min recording periods in an eyes closed recording condition: Upper panel: Cocaine Cue during guided imagery, Lower panel: Cocaine Dose during minutes 5-10 following dosing (50 mg cocaine base). Color coding, in steps corresponding to those shown in the Z-scale (range ± 1.25), is proportional to the difference in Z-scores from a healthy normative population. In estimating the confidence level of Z scale values for this group dataset (n=13), the significance level p<0.05 applies to a Z-score difference between conditions of 0.5 or greater. Head maps in the lower panel are reprinted with permission from the American College of Neuropsychopharmacology from the publication; Neuropsychopharmacology 2006 31, 872-884.