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Detection of Histone Modifications in Plant Leaves
07:08

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Published on: September 23, 2011

Detecting awareness in the vegetative state.

Adrian M Owen1, Martin R Coleman, Melanie Boly

  • 1Medical Research Council Cognition and Brain Sciences Unit, Cambridge CB2 2EF, UK. adrian.owen@mrc-cbu.cam.ac.uk

Science (New York, N.Y.)
|September 9, 2006
PubMed
Summary
This summary is machine-generated.

This study used functional magnetic resonance imaging to show that a patient diagnosed with a vegetative state exhibited preserved conscious awareness. The patient

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Clinical Neurology

Background:

  • Diagnosing disorders of consciousness, such as the vegetative state, presents significant clinical challenges.
  • Distinguishing true unconsciousness from covert awareness is crucial for patient care and ethical considerations.

Observation:

  • A patient meeting diagnostic criteria for a vegetative state was assessed using functional magnetic resonance imaging (fMRI).
  • The patient was instructed to perform mental imagery tasks, specifically imagining playing tennis and navigating familiar environments.

Findings:

  • fMRI revealed that the patient activated specific cortical regions during the mental imagery tasks.
  • The observed brain activity patterns were comparable to those of healthy volunteers, indicating preserved cognitive function.

Implications:

  • This finding suggests that some patients diagnosed as vegetative may possess covert consciousness.
  • The results highlight the potential of neuroimaging techniques like fMRI in assessing awareness in non-responsive patients.
  • Further research is warranted to explore the extent and nature of awareness in disorders of consciousness.