A First Step Toward the Operationalization of the Learned Non-Use Phenomenon: A Delphi Study

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Clinical Psychology

Background:

• Learned Non-Use (LNU) describes the discrepancy between functional capacity and reduced use of the unaffected limb post-brain lesion.
• LNU is believed to involve neuronal recovery and learning mechanisms.

Purpose of the Study:

• To establish a transdisciplinary definition for Learned Non-Use (LNU).
• To synthesize current knowledge on diagnostic procedures for LNU.
• To reach expert consensus on LNU definition and diagnostics.

Main Methods:

• A structured Delphi method involving clinical and scientific experts was employed.
• Expert knowledge from patient populations and animal models was integrated.
• Group communication facilitated consensus building.

Main Results:

• A transdisciplinary definition for LNU was achieved.
• Current diagnostic processes, information sources, and outcome parameters show wide variation, indicating a lack of standardization.
• Consensus was reached on the LNU phenomenon definition and diagnostic strategies.

Conclusions:

• Development and implementation of structured diagnostic procedures for LNU are crucial.
• A significant gap exists between LNU hypotheses and empirical evidence, necessitating basic research.
• Bridging basic and clinical research is vital for improving patient outcomes and interventions.