1850
Brown-Séquard syndrome, also known as Brown-Séquard's hemiplegia and Brown-Séquard's paralysis, is a loss of sensation and motor function (paralysis and anesthesia) that is caused by the lateral hemisection (cutting) of the spinal cord. Other synonyms are hemiparaplegic syndrome, hemiplegia et hemiparaplegia spinalis, and spinal hemiparaplegia. It is named after physiologist Charles-Édouard Brown-Séquard, who first described the condition in 1850 1)
Georg Friedrich Louis Stromeyer coined the term sinus pericranii in 1850 2)).