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. 2010 Sep 22;133(12):3611–3624. doi: 10.1093/brain/awq239

Figure 4.

Figure 4

Delta plots depicting reduced Simon effect as a function of response speed for individuals with Parkinson’s disease (DBS on, DBS off) and healthy controls (HC). Compared to no stimulation, STN DBS improves inhibitory control over conflicting response interference as evidenced by a sustained decrease of the Simon effect on slower correct trials. Error bars indicate standard error of the mean. RT = reaction time.