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Related Concept Videos

Understanding Consciousness01:23

Understanding Consciousness

Consciousness can be defined as the state of being aware of and able to think about one's existence, sensations, and surroundings. It encompasses two major components: awareness and arousal. Awareness pertains to the recognition of environmental stimuli and internal states. At the same time, arousal refers to the physiological readiness to engage with these stimuli, which varies significantly between states like sleep and wakefulness.
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Subconsciousness and No Awareness

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Self-awareness is a psychological state in which the individual becomes the focal point of their attention. This inward focus transforms the self into an object of contemplation and assessment, influencing how individuals perceive their actions and their alignment with personal and societal standards.Triggers and Contexts for Self-AwarenessSelf-awareness can be activated by external stimuli that make individuals visually or audibly aware of themselves, such as mirrors, cameras, or recordings.
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Updated: May 15, 2026

Assessment and Communication for People with Disorders of Consciousness
07:37

Assessment and Communication for People with Disorders of Consciousness

Published on: August 1, 2017

Consciousness supporting networks.

Athena Demertzi1, Andrea Soddu, Steven Laureys

  • 1Coma Science Group, Cyclotron Research Center & CHU Neurology Department, Allée du 6 août n° 8, Sart Tilman B30, University of Liège, 4000 Liège, Belgium. a.demertzi@ulg.ac.be

Current Opinion in Neurobiology
|January 1, 2013
PubMed
Summary
This summary is machine-generated.

Disorders of consciousness disrupt brain networks essential for awareness. Neuroimaging reveals specific network breakdowns in unresponsive patients, with partial recovery seen in minimally conscious states.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Neurology

Background:

  • Disorders of consciousness (DoC) are characterized by disrupted system-level functional connectivity.
  • Unresponsive patients lack awareness due to disconnected cerebral networks, despite preserved brainstem wakefulness networks.
  • Specific networks for external and internal awareness are compromised in DoC.

Purpose of the Study:

  • To investigate the functional connectivity patterns in patients with disorders of consciousness.
  • To delineate the specific brain networks involved in external and internal awareness.
  • To explore how these networks change with clinical recovery.

Main Methods:

  • Functional neuroimaging techniques were employed.
  • Analysis focused on system-level functional connectivity.
  • Experimental paradigms were used to detect motor-independent signs of awareness.

Main Results:

  • Unresponsive patients show disrupted external and internal awareness networks.
  • Minimally conscious state minus patients exhibit right-lateralized recovery of the external awareness network.
  • Minimally conscious state plus patients recovering command following show left-lateralized language network recovery.

Conclusions:

  • Disorders of consciousness involve specific disruptions in awareness-related brain networks.
  • Network recovery patterns correlate with clinical states and behavioral improvements.
  • Emerging paradigms challenge current DoC classifications and raise neuroscientific and ethical questions.