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Posterior spinal artery syndrome (PSAS), also known as posterior spinal cord syndrome, is a type of incomplete spinal cord injury. [1] PSAS is the least commonly occurring of the six clinical spinal cord injury syndromes , with an incidence rate of less than 1%.
Spinal lamina V, the neck of the posterior horn [9] Spinal lamina VI, the base of the posterior horn. The other four laminae are located in the other two grey columns in the spinal cord. The function of the spinal dorsal horn is to process and integrate sensory information from the peripheral nervous system.
Posterior horn of lateral ventricle in the brain, which passes forward, laterally and slightly downward, from the corpus callosum into the occipital lobe Posterior horn of spinal cord , the dorsal (towards the back) grey matter section of the spinal cord that receives several types of sensory information from the body including light touch ...
Subacute combined degeneration of spinal cord, also known as myelosis funiculus, or funicular myelosis, [1] also Lichtheim's disease, [2] [3] and Putnam-Dana syndrome, [4] refers to degeneration of the posterior and lateral columns of the spinal cord as a result of vitamin B 12 deficiency (most common).
The action signal will continue along the central axon of the neuron through the posterior root, into the posterior horn, and up the posterior column of the spinal cord. Axons from the lower body enter the posterior column below the level of T6 and travel in the midline section of the column called the gracile fasciculus. [ 5 ]
Pain wind-up is the increase in pain intensity over time when a given stimulus is delivered repeatedly above a critical rate. It is caused by repeated stimulation of group C peripheral nerve fibers, leading to progressively increasing electrical response in the corresponding spinal cord (posterior horn) neurons due to priming of the NMDA receptor based response.
These axons enter the spinal column and penetrate the grey matter of the dorsal horn, where they synapse on second-order neurons in either the substantia gelatinosa of Rolando or the nucleus proprius. Those neurons project their axon to the anterolateral quadrant of the contralateral half of the spinal cord, where they give the spinothalamic tract.
Multiple sclerosis: demyelination of the brain and spinal cord; Neuromyelitis optica or Devic's disease: immune attack on optic nerve and spinal cord; Sjögren's syndrome: destruction of the exocrine system of the body; Systemic lupus erythematosus: a systemic autoimmune disease featuring a wide variety of neurological signs and symptoms