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Related Concept Videos

Olfaction01:25

Olfaction

49.0K
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.
The olfactory receptors are embedded in the cilia of the...
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Physiology of Smell and Olfactory Pathway01:20

Physiology of Smell and Olfactory Pathway

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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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IR Spectroscopy: Molecular Vibration Overview01:24

IR Spectroscopy: Molecular Vibration Overview

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When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
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Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

11.9K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
11.9K
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration01:16

IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

3.1K
A covalently bonded heteronuclear diatomic molecule can be modeled as two vibrating masses connected by a spring. The vibrational frequency of the bond can be expressed using an equation derived from Hooke's law, which describes how the force applied to stretch or compress a spring is proportional to the displacement of the spring. In this case, the atoms behave like masses, and the bond acts like a spring.
According to Hooke's law, the vibrational frequency is directly proportional to...
3.1K
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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Related Experiment Video

Updated: Feb 18, 2026

Live-cell Measurement of Odorant Receptor Activation Using a Real-time cAMP Assay
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Live-cell Measurement of Odorant Receptor Activation Using a Real-time cAMP Assay

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Correction: Molecular Vibration-Sensing Component in Human Olfaction.

Simon Gane, Dimitris Georganakis, Klio Maniati

    Plos One
    |November 22, 2017
    PubMed
    Summary
    This summary is machine-generated.

    This study corrects a previously published article DOI. The correction ensures accurate citation and retrieval of scientific research. Researchers should verify DOIs for all cited works.

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    Area of Science:

    • Bibliometrics
    • Scientific Communication

    Context:

    • Accurate citation is crucial for scientific integrity.
    • Digital Object Identifiers (DOIs) are essential for locating research.

    Purpose:

    • To provide a correction for a specific article's DOI.
    • To ensure the scientific record is accurate.

    Summary:

    • This entry serves as a correction notice.
    • It rectifies the Digital Object Identifier (DOI) for a specific publication.

    Impact:

    • Ensures proper attribution and discoverability of the corrected article.
    • Maintains the integrity of scientific literature databases.