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Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans

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Deep Brain Stimulation and the Search for Identity.

Karsten Witt¹, Jens Kuhn, Lars Timmermann

¹Institute for the History of Medicine and Medical Ethics, Research Unit Ethics, University of Cologne, Herderstraße 54, 50931 Cologne, Germany.

|November 26, 2013

Summary

Deep brain stimulation (DBS) for Parkinson's disease raises ethical concerns regarding patient identity changes. This study clarifies "becoming another person" and critiques current identity assessment methods for DBS patients.

Keywords:

Deep brain stimulation Neuroethics Parkinson’s disease Personal identity Personality measurement

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Area of Science:

Neuroscience
Bioethics
Philosophy of Mind

Background:

Deep brain stimulation (DBS) is a key treatment for Parkinson's disease.
Patients undergoing DBS may experience significant changes in personal identity, causing ethical distress.
The concept of "becoming another person" is a major ethical challenge in DBS for Parkinson's.

Purpose of the Study:

To conceptually analyze the meaning of "becoming another person" in the context of DBS for Parkinson's disease.
To propose a framework for understanding and evaluating changes in individual identity after DBS.
To assess the suitability of current methods for measuring identity changes in DBS patients.

Main Methods:

Conceptual analysis of personal identity, focusing on "core attitudes" and their interrelations.
Critique of existing philosophical and psychological approaches to identity.
Evaluation of current empirical instruments used in DBS patient selection and monitoring.

Main Results:

Identity change post-DBS is linked to alterations in "core attitudes."
A "foundational-function model" is proposed, emphasizing dependency relations between attitudes.
Existing instruments are deemed inadequate for measuring nuanced identity shifts in DBS patients.

Conclusions:

A clear conceptualization of identity is crucial for ethical evaluation of DBS.
New, combined conceptual and empirical approaches are needed to accurately assess identity changes.
Improved methods are essential for ethical patient selection and monitoring in DBS therapy for Parkinson's disease.