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Related Concept Videos

Olfaction01:25

Olfaction

The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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Related Experiment Video

Updated: Jun 20, 2026

Combining a Breath-Synchronized Olfactometer with Brain Simulation to Study the Impact of Odors on Corticospinal Excitability and Effective Connectivity
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Supracortical consciousness: Insights from temporal dynamics, processing-content, and olfaction.

Ezequiel Morsella1, John A Bargh

  • 1Department of Psychology, Yale University, New Haven, CT 06520.

The Behavioral and Brain Sciences
|August 22, 2009
PubMed
Summary

This study explores conscious states by integrating Merker

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Area of Science:

  • Neuroscience
  • Philosophy of Mind
  • Cognitive Science

Background:

  • Understanding conscious states remains a significant challenge in neuroscience.
  • Merker's contribution offers a framework for investigating consciousness.
  • Existing research has explored aspects of consciousness but requires further integration.

Purpose of the Study:

  • To integrate Merker's framework with current knowledge on consciousness.
  • To examine the temporal relationship between conscious states and mesodiencephalic system activation.
  • To investigate the neural basis of olfactory consciousness and information integration.

Main Methods:

  • Review and synthesis of existing literature on consciousness.
  • Analysis of temporal dynamics between neural activity and conscious experience.
  • Examination of neural correlates associated with specific types of information processing.

Main Results:

  • Identified key temporal links between mesodiencephalic activation and conscious states.
  • Differentiated the roles of perceptual versus premotor information in conscious integration.
  • Highlighted specific neural signatures for olfactory consciousness.

Conclusions:

  • Integrating Merker's ideas with empirical data advances our understanding of conscious states.
  • The temporal dynamics and information type are crucial for conscious integration.
  • Further research into olfactory consciousness can provide unique insights into neural mechanisms of awareness.