Deep Brain Stimulation Frequency of the Subthalamic Nucleus Affects Phonemic and Action Fluency in Parkinson’s Disease

Figure 1

Patients’ performances on VF tasks at low and high stimulation frequencies. (a) Performance of the entire sample for each VF task. denotes the significant difference between frequency conditions for the respective task. (b) Phonemic fluency performance (P version) by the patient. (c) Phonemic fluency performance (FAS version) by the patient. (d) Action fluency performance by the patient.

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