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Related Concept Videos

Psychosurgery01:30

Psychosurgery

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Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
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Evidence-Based Neuroethics, Deep Brain Stimulation and Personality - Deflating, but not Bursting, the Bubble.

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  • 1Department of Philosophy, The University of Oxford, The Oxford Uehiro Centre for Practical Ethics, Oxford, UK.

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Deep Brain Stimulation (DBS) may alter personality, but the key ethical question is not causation, but moral significance. Evidence-based neuroethics, guided by the Centre for Evidence-Based Medicine (CEBM), is crucial for analyzing these changes.

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AgencyAuthenticityAutonomyDeep brain stimulationEvidence-based medicineIdentityPersonalitySelfSurgical trials

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Area of Science:

  • Neuroethics
  • Neuroscience
  • Philosophy of Medicine

Background:

  • Deep Brain Stimulation (DBS) is increasingly used, raising questions about its impact on personality.
  • Existing neuroethical analyses may lack sufficient empirical grounding regarding DBS-induced personality changes.
  • The 'causation' of personality changes by DBS is debated, necessitating a re-evaluation of evidence standards.

Purpose of the Study:

  • To propose a framework for evidence-based neuroethics in analyzing DBS effects on personality.
  • To critically assess the utility of specific trial designs for investigating DBS-related personality alterations.
  • To determine the most significant ethical questions surrounding DBS-induced personality changes.

Main Methods:

  • Reviewing challenges in investigating changes to personality, identity, agency, and autonomy (PIAAAS) after DBS.
  • Applying the Centre for Evidence-Based Medicine (CEBM) levels of evidence hierarchy to neuroethical analysis.
  • Integrating philosophical neuroethics with mechanism-based reasoning for evaluating DBS effects.

Main Results:

  • Certain trial designs may not definitively establish direct causation of personality changes by DBS.
  • The moral significance of DBS-induced personality changes is a more critical ethical consideration than direct causation.
  • A CEBM-aligned approach can enhance the evidence base for neuroethical assessments of DBS.

Conclusions:

  • Neuroethical claims regarding DBS effects should be calibrated to the strength of empirical evidence.
  • Philosophical neuroethics can contribute to mechanism-based reasoning, strengthening evidence-based neuroethics.
  • Adopting an evidence-based framework is essential for robust neuroethical analysis of novel neuro-interventions like DBS.