News tagged with sensory neurons

Related topics: neurons

Diagnosing GAN one strand at a time

Giant axonal neuropathy (GAN) is an extremely rare genetic disease with only 73 known patients worldwide. GAN causes a gradual failure of motor neurons that stimulate muscles and eventually failure of sensory neurons. New ...

May 22, 2017
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Autism-linked protein crucial for feeling pain

Sensory problems are common to autism spectrum disorders. Some individuals with autism may injure themselves repetitively—for example, pulling their hair or banging their heads—because they're less sensitive to pain than ...

Dec 01, 2016
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Sensory neuron

Sensory neurons are neurons that are activated by sensory input (vision, touch, hearing, etc.), and send projections into the central nervous system that convey sensory information to the brain or spinal cord. Unlike neurons of the central nervous system, whose inputs come from other neurons, sensory neurons are activated by physical modalities such as light, sound, temperature, chemical stimulation, etc.

In complex organisms, sensory neurons relay their information to the central nervous system or in less complex organisms, such as the hydra, directly to motor neurons and sensory neurons also transmit information (electrical impulses) to the brain, where it can be further processed and acted upon. For example, olfactory sensory neurons make synapses with neurons of the olfactory bulb, where the sense of olfaction (smell) is processed.

At the molecular level, sensory receptors located on the cell membrane of sensory neurons are responsible for the conversion of stimuli into electrical impulses. The type of receptor employed by a given sensory neuron determines the type of stimulus it will be sensitive to. For example, neurons containing mechanoreceptors are sensitive to tactile stimuli, while olfactory receptors make a cell sensitive to odors.

This text uses material from Wikipedia, licensed under CC BY-SA

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