Denervation supersensitivity is increased sensitivity by a postsynaptic cell after removal of an Axon that formerly innervated it.

Denervation supersensitivity is a phenomenon that occurs when there is a loss of innervation or nerve supply to a particular area of the body, resulting in an increase in the sensitivity of the remaining nerves in that area. This can happen in various parts of the body, including muscles and sensory receptors.

One example of denervation supersensitivity is phantom limb pain, where an individual experiences pain in a limb that has been amputated. In this case, the nerves that used to innervate the limb are no longer present, but the remaining nerves in the area become hypersensitive, causing pain.

Another example is in the case of Bell's palsy, where the facial nerve is damaged or destroyed, leading to partial or complete paralysis of the facial muscles. In this case, the remaining nerves in the face may become hypersensitive, resulting in abnormal sensations or pain in the affected area.

Denervation supersensitivity can also occur in sensory receptors, such as in the case of chronic pain syndromes or neuropathic pain. In these cases, the loss of nerve supply to a particular area can result in hypersensitivity of the remaining nerves, leading to chronic pain or discomfort.

 

Related Articles

Disuse supersensitivity at psychology-glossary.com■■■■■■
Disuse supersensitivity refers to increased sensitivity by a post-synaptic cell because of decreased . . . Read More
Phantom limb pain at psychology-glossary.com■■■■
Phantom limb pain is a feeling of pain in a non-existent limb; the experience of chronic pain in an absent . . . Read More
Myelination at psychology-glossary.com■■■■
Myelination is defined as development of a Myelin sheath that insulates an axon; development of myelin . . . Read More
Neuron at psychology-glossary.com■■■■
Neuron refers to individual nerve cell responsible for transmitting information; - - In psychology, . . . Read More
Presynaptic terminal at psychology-glossary.com■■■■
Presynaptic terminal is the tip of an axon, the point from which the axon releases chemicals; - - In . . . Read More
Amyotrophic lateral sclerosis at psychology-glossary.com■■■■
Amyotrophic lateral sclerosis refers to the disease of the Motor System in which people experience a . . . Read More
Lou Gehrig's disease at psychology-glossary.com■■■■
Lou Gehrig's disease refers to the disease of the Motor System in which people experience a gradual to . . . Read More
ALS at psychology-glossary.com■■■■
ALS is the abbreviations of Amyotrophic lateral sclerosis which refers to the disease of the Motor System . . . Read More
Nervous system at psychology-glossary.com■■■■
Nervous system refers to the sensory and control apparatus consisting of a network of nerve cells. It . . . Read More
Hair cell at psychology-glossary.com■■■■
Hair cell refers to type of sensory receptor shaped like a hair; receptor cells within the cochlea that . . . Read More