Interventions in Parkinson's disease: Role of executive function

Area of Science:

• Neuroscience
• Neurology
• Cognitive Science

Background:

• The cortico-striatal network is crucial for executive functions (EF) and implicated in Parkinson's disease (PD) pathophysiology.
• Current tools for assessing EF in PD are limited.
• Understanding EF's role in PD is vital for treatment.

Purpose of the Study:

• To review the impact of pharmacotherapy, physical exercise, and Deep Brain Stimulation (DBS) on executive functions (EF) in Parkinson's disease (PD).
• To identify factors influencing the effects of these interventions on EF.
• To highlight the need for improved EF assessment methods in PD.

Main Methods:

• Systematic review of studies on PD interventions and their effects on EF.
• Analysis of how drug class, exercise type, and DBS parameters influence EF outcomes.
• Evaluation of current neuropsychological tests used for EF assessment in PD.

Main Results:

• Pharmacotherapy effects on EF are variable, depending on drug class, test used, and dopamine receptor involvement.
• Aerobic exercise shows potential benefits for EF, including attention and judgment.
• DBS effects on EF may depend on stimulation site, testing methods, and patient's pre-operative cognitive status.

Conclusions:

• Interventions for PD have varied effects on executive functions.
• More precise EF assessment tools, focusing on the motor aspects of EF, are required.
• Further investigation is needed to clarify the relationship between EF, PD manifestations, and motor recovery.