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Behavioural group results obtained from the functional MRI paradigm
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Healthy controls (HC), patients with Parkinson’s disease OFF (PD-OFF) and ON medication (PD-ON); Square brackets denote Group/Medication × Condition interactions relating to externally cued and internally selected reaction times. Tapping = maximum finger tapping speed; Time = intervals between button presses in the Free condition; RT = reaction time; SEM in parentheses; *P < 0.05.
