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Related Concept Videos

Sensory Functions of the Skin01:16

Sensory Functions of the Skin

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The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
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Introduction to Special Senses01:26

Introduction to Special Senses

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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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Somatosensation01:33

Somatosensation

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The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Introduction to Sensory Receptors01:31

Introduction to Sensory Receptors

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Sensory receptors are vital in our ability to perceive and interpret the world. Sensory receptors are specialized cells in the peripheral nervous system that respond to various stimuli and enable one to experience different sensations. Based on specific criteria, sensory receptors are classified into distinct types.
The first classification criterion is based on cell type, position, and function. Some receptor cells are neurons with free nerve endings, where their dendrites are embedded in the...
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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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Sensation01:21

Sensation

1.8K
Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction.
Absolute thresholds can quantify the sensitivity of sensory...
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A model for perception-based identification of sensitive skin.

R J H Richters1, N E Uzunbajakava2, J C M Hendriks3

  • 1Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands.

Journal of the European Academy of Dermatology and Venereology : JEADV
|September 23, 2016
PubMed
Summary
This summary is machine-generated.

Sensitive skin (SS) affects 41% of individuals and is triggered by factors like toiletries and emotions, not solely by skin conditions. This suggests a general form of sensitive skin exists.

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Area of Science:

  • Dermatology
  • Epidemiology
  • Psychodermatology

Background:

  • Sensitive skin (SS) is prevalent, yet its underlying mechanisms, symptoms, and the existence of a general form remain poorly understood.
  • Research is increasingly focused on sensitive skin due to these knowledge gaps and challenges in subject recruitment for studies.

Purpose of the Study:

  • To develop a model for identifying subjects in sensitive skin research.
  • To define a comprehensive set of self-reported characteristics and discriminative factors for sensitive skin.

Main Methods:

  • A large-scale survey (n=3058) collected data on demographics, atopy, skin traits, personal care, and reactions to various factors.
  • Exploratory factor analysis and multivariate logistic regression were used to analyze 481 questionnaires and identify key variables.

Main Results:

  • The prevalence of sensitive skin was 41%, with 56% of affected individuals reporting a co-existing atopic condition.
  • Toiletries and emotional triggers were the most significant factors distinguishing sensitive skin, rather than specific skin symptoms.

Conclusions:

  • Sensitive skin appears to be triggered by diverse factors and is not exclusively defined by co-existing skin diseases, supporting the concept of a 'general' sensitive skin type.
  • A multifactorial questionnaire may serve as a more effective diagnostic tool for sensitive skin than single provocative tests.