Neurologist

Acute Disseminated Encephalomyelitis (ADEM) acute, classically monophasic demyelinative disease of the CNS that may follow a viral syndrome or vaccination or no identifiable predisposing cause

absence seizure (petit mal seizure) generalized seizure characterized by abrupt cessation of ongoing activity with a blank stare and lost or impaired consciousness lasting on average 10-20 seconds

Alzheimer’s disease most common cause of dementia in older adults; a neurodegenerative disease characterized by the gradual loss of cognitive ability in association with the neuropathological findings of abnormal protein aggregates (neuritic plaques and neurofibrillary tangles) and neuron loss in the cerebral cortex

ankle-foot orthosis (AFO) brace that is worn on the lower leg and foot to support the ankle and correct foot drop

Argyll-Robertson pupil pupil exhibiting light-near dissociation due to a lesion in the midbrain periaqueductal gray matter caused by tertiary syphilis arousal abrupt change from sleep to wakefulness, or from a "deeper" stage of non-REM sleep to a "lighter" stage

association cortex cortical areas involved in higher order processing of sensory information and integration of multiple sensory and sensorimotor modalities astasia inability to stand because of motor incoordination

Inability to write due either to muscular coordination issues or to an inability to phrase thought.

Collection of blood vessels with one or several abnormal connections between arteries and veins, which may cause hemorrhage or seizures.

The bundle of spinal nerve roots arising from the end of the spinal cord and filling the lower part of the spinal canal.

A condition, often congenital, marked by abnormal and excessive accumulation of cerebrospinal fluid in the cerebral ventricles. This dilates the ventricles and, in infants and young children, causes the head to enlarge.

Tumor composed of medulloblasts, which are cells that develop in the roof of the fourth ventricle (medullary velum).

Application of electromagnetic radiation to produce a film or picture of a bone or soft-tissue area of the body.

abducens nerve (cranial nerve VI) motor nerve innervating the lateral rectus muscle, which abducts the eye; lesions of the nucleus, which is located in the dorsal pons, produce a horizontal gaze palsy; nerve fibers exit the ventromedial pons and because of their long course are vulnerable to damage by mass lesions/increased intracranial pressure

activity limitations difficulties an individual may have in executing specific tasks or actions (e.g., walking independently).

alien hand syndrome syndrome characterized by the involuntary movement of a single upper limb in conjunction with the experience of estrangement from or personification of the movements of the limb; often seen in corticobasal degeneration allodynia condition in which an ordinarily painless stimulus is experienced as being painful

angular gyrus gyrus located immediately posterior to the supramarginal gyrus at the superior edge of the temporal lobe and involved in recognition of visual symbol; lesions can result in alexia and agraphia

arthrokinetic nystagmus nystagmus induced by passive rotation of the arm of a stationary subject seated in total darkness inside a rotating drum

automatism mechanical, seemingly aimless behavior (e.g., lip smacking or picking at clothes) characteristic of complex partial seizures

A communication, direct or indirect: a joining together. In the nervous system a joining of nerves or blood vessels.

Paralysis of facial muscles (usually one side) due to facial nerve dysfunction of unknown cause.