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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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What is a Sensory System?01:31

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Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
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Sensory Modalities01:15

Sensory Modalities

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Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
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Sensory Memory01:14

Sensory Memory

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Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
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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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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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Related Experiment Video

Updated: Feb 10, 2026

Author Spotlight: Exploring Peripheral Mechanisms of Neuropathic Pain in Trigeminal Nerve Injury
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Idiopathic sensory trigeminal neuropathy.

K P Gibbin, I P Griffith

    The Journal of Laryngology and Otology
    |October 1, 1978
    PubMed
    Summary

    Idiopathic trigeminal neuropathy causes isolated facial numbness. A multidisciplinary team approach is crucial for accurate diagnosis and excluding serious conditions.

    Area of Science:

    • Neurology
    • Otolaryngology
    • Dental Surgery

    Background:

    • Facial numbness can be alarming, necessitating a thorough diagnostic process.
    • Idiopathic trigeminal neuropathy is a potential diagnosis for isolated facial numbness.

    Observation:

    • Presents seven cases of isolated facial numbness.
    • Highlights the importance of a specialist team including neurologists, otolaryngologists, and dental surgeons.

    Findings:

    • Idiopathic trigeminal neuropathy is considered the final diagnosis in these cases.
    • Emphasizes the need to exclude more serious underlying pathologies through comprehensive work-up.

    Implications:

    • Suggests a multidisciplinary approach for accurate diagnosis of facial numbness.

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  • Stresses the importance of long-term follow-up for patients diagnosed with idiopathic trigeminal neuropathy.