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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.
Sleep, a crucial state, is characterized by reduced physical...
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High-Level and Low-Level Awareness

Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
Reason and Intuition01:37

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The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the brain can only use...
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Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain that...
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The self-concept encompasses individuals' beliefs about themselves, structured through cognitive frameworks known as self-schemas. These schemas function as mental representations of specific traits or behaviors, influencing how self-relevant information is perceived, processed, and remembered. For example, individuals who are schematic for body weight are more likely to interpret routine experiences—such as dining out or shopping—through the lens of that trait. Conversely, those aschematic for...

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Assessment and Communication for People with Disorders of Consciousness
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The conscious access hypothesis: Explaining the consciousness.

Ravi Prakash1

  • 1Department of Psychiatry, Central Institute of Psychiatry, Ranchi, India.

Indian Journal of Psychiatry
|September 23, 2009
PubMed
Summary
This summary is machine-generated.

This review explores the conscious access hypothesis, a cognitive theory explaining consciousness through global information access in the brain. It examines the theoretical basis and experimental evidence supporting this model of consciousness.

Keywords:
Computationconscious accessconsciousnessglobal workspaceinformation processingneurobiologyquantum consciousness

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Area of Science:

  • Cognitive Neuroscience
  • Philosophy of Mind

Background:

  • Consciousness, a long-standing enigma, is increasingly explored through scientific lenses.
  • Cognitive theories, particularly the global workspace model, offer prominent explanations for consciousness.

Purpose of the Study:

  • To review the conscious access hypothesis, a key component of the global workspace model.
  • To examine the theoretical foundations and empirical evidence supporting the conscious access hypothesis.

Main Methods:

  • Literature review of cognitive theories of consciousness.
  • Analysis of experimental studies investigating information access in the cerebral cortex.

Main Results:

  • The conscious access hypothesis posits that consciousness involves the global availability of information.
  • Experimental evidence supports the role of widespread neural activation in conscious awareness.

Conclusions:

  • The conscious access hypothesis provides a valuable framework for understanding consciousness.
  • Further research is needed to fully elucidate the neural mechanisms of conscious access.