Neuro Words for Nerds


Each week’s Neuro Words for Nerds post defines a neurology term, its pronunciation, etymology, and clinical relevance.

Term: Neurotmesis

Neurotmesis is complete severance of the entire nerve fiber, including the axon, myelin sheath, Schwann cells and endoneurium.

Term: Falx cerebri

The falx cerebri is the vertical fold of meninges on the dorsal midline between the two cerebral hemispheres.

Term: Intention tremor

An intention tremor is a form of dysmetria characterized by a large amplitude (broad & coarse), low frequency tremor that increases in severity as the affected extremity approaches its intended target.

Term: Marcus Gunn pupil

The term Marcus Gunn pupil refers to a syndrome in which the affected pupil appears to dilate, rather than constrict, when light is shone into the affected eye while performing a swinging-flashlight test.

Term: Hemineglect

Hemineglect is a syndrome characterized by decreased attention or awareness of one side of space, usually contralateral to a forebrain lesion.

Term: Myokymia

Myokymia is an involuntary, spontaneous, localized quivering of a few bundles within a muscle or a few muscle groups, but without sufficient force to move a joint.

Term: Central cord syndrome

Central cord syndrome occurs when there is disease or injury within the central region of the spinal cord and causes thoracic limb weakness that is worse than pelvic limb weakness. 

Term: Xeromycteria

Pronounced: zē′rō-mik-tē′rē-ă Etymology: From xero- ("dry")…

Term: Risus sardonicus

The latin term risus sarcondicus literally translates to "sardonic smile." It is one of the hallmark features of tetanus, along with...