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Related Experiment Videos

Self-consciousness in non-communicative patients.

Steven Laureys1, Fabien Perrin, Serge Brédart

  • 1Coma Science Group, Cyclotron Research Center and Neurology Department, CHU Sart Tilman Hospital and University of Liège, 4000 Liège, Belgium. steven.laureys@ulg.ac.be

Consciousness and Cognition
|June 5, 2007
PubMed
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Assessing consciousness in severe brain injury is difficult. Self-referential stimuli like one's own name or face can reveal residual self-consciousness and aid in understanding brain networks involved in self-processing.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Diagnosing disorders of consciousness (coma, vegetative state, minimally conscious state) in non-communicative patients is challenging.
  • Assessing residual self-consciousness requires sensitive clinical and para-clinical tools.
  • Self-referential stimuli, such as one's own name and face, are potent attention-grabbers.

Purpose of the Study:

  • To review existing literature on the use of the own name and own face paradigm in assessing consciousness.
  • To explore the neural underpinnings of self-processing across different states of consciousness.
  • To delineate current knowledge and gaps regarding self-referential processing in brain-damaged patients.

Main Methods:

  • Systematic review of neuropsychological, neuropathological, electrophysiological, and neuroimaging studies.

Related Experiment Videos

  • Analysis of studies employing the own name and own face paradigm.
  • Inclusion of data from conscious waking, sleep, pharmacological coma, pathological coma, and related disorders of consciousness.

    • Main Results:

    • The own name and own face stimuli effectively elicit responses in patients with disorders of consciousness.
    • Event-related potentials and functional neuroimaging reveal distinct patterns of self-processing.
    • These paradigms help differentiate between automatic and conscious self-referential processing.

    Conclusions:

    • The own name and own face paradigm is a valuable tool for investigating residual self-consciousness.
    • Understanding the neural network of self-processing is crucial for clinical assessment and prognosis.
    • Further research is needed to fully elucidate the functional significance of self-referential processing in disorders of consciousness.