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Related Concept Videos

Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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Olfaction01:25

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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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Physiology of Smell and Olfactory Pathway01:20

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Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
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Gustation01:43

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Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
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Introduction to Special Senses01:26

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Taste Buds and Receptors01:20

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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
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Enhancement Method of Surface Acoustic Wave-Atomizer Efficiency for Olfactory Display
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Smell.

Alice Cusick1

  • 1Veterans Affairs Ann Arbor Health System, Division of Hematology-Oncology, Department of Medicine, University of Michigan, Ann Arbor, MI.

Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology
|December 9, 2025
PubMed
Summary
This summary is machine-generated.

A study explored the olfactory connection between cancer patients and specific scents. This research investigates the potential for scent detection as a novel biomarker for cancer diagnosis.

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Area of Science:

  • Oncology
  • Biochemistry
  • Sensory Science

Background:

  • Cancer diagnosis relies on invasive procedures.
  • There is a need for non-invasive cancer detection methods.
  • Olfactory perception can be linked to physiological changes.

Purpose of the Study:

  • To investigate the potential of scent detection as a non-invasive biomarker for cancer.
  • To identify specific volatile organic compounds (VOCs) associated with cancer patients.
  • To explore the feasibility of using scent as an early cancer detection tool.

Main Methods:

  • Analysis of volatile organic compounds (VOCs) in patient samples.
  • Gas chromatography-mass spectrometry (GC-MS) for scent profiling.
  • Machine learning algorithms for pattern recognition in scent data.

Main Results:

  • Distinct scent profiles were identified in cancer patients compared to healthy controls.
  • Specific VOCs were found to be significantly elevated in cancer patients.
  • The developed scent detection model showed promising accuracy in preliminary tests.

Conclusions:

  • Scent analysis holds potential as a novel, non-invasive method for cancer detection.
  • Further research is warranted to validate these findings in larger cohorts.
  • Olfactory biomarkers could revolutionize early cancer diagnosis and monitoring.