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Clinical Neurology Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

hemianopia

Intermediate Technical IVT

Loss of vision in half the visual field, typically indicating damage to the visual pathways posterior to the optic chiasm.

Showing 49–72 of 100

glioblastoma multiforme

Professional Technical IVT

A highly malignant primary brain tumor, the most aggressive form of glioma, commonly abbreviated as GBM.

Technical Term Full entry →

gliosis

Advanced Technical IVT

Proliferation of glial cells in response to central nervous system injury or disease.

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hemianopia

Intermediate Technical IVT

Loss of vision in half the visual field, typically indicating damage to the visual pathways posterior to the optic chias...

Technical Term Full entry →

hemiatrophy

Intermediate Technical IVT

Progressive wasting or diminished development of structures on one side of the body or brain.

Technical Term Full entry →

hemineglect

Intermediate Technical IVT

A neuropsychological condition where patients fail to attend to or respond to stimuli on one side of space, typically th...

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hemiplegia

Intermediate Technical IVT

Complete paralysis of one side of the body, typically following stroke or brain injury.

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hemispherectomy

Professional Technical IVT

Surgical procedure involving the removal or disconnection of one cerebral hemisphere, typically performed for severe, in...

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hydrocephalus

Intermediate Technical IVT

A condition characterized by excessive accumulation of cerebrospinal fluid within the brain's ventricular system.

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hyperreflexia

Intermediate Technical IVT

Abnormally increased or overactive deep tendon reflexes, typically indicating upper motor neuron dysfunction.

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ictal

Intermediate Technical IVT

Relating to or occurring during a seizure episode.

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ideomotor apraxia

Advanced Technical IVT

A motor planning disorder where patients understand tasks but cannot execute learned movements on command despite intact...

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interictal

Intermediate Technical IVT

Referring to the period between seizures in patients with epilepsy, when no obvious seizure activity is occurring.

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intracranial pressure

Intermediate Technical IVT

The pressure inside the skull, commonly abbreviated as ICP, critical for monitoring neurological patients.

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ischemic penumbra

Advanced Technical IVT

Brain tissue surrounding an infarct core that is hypoperfused but potentially salvageable with prompt reperfusion therap...

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Kernig sign

Intermediate Technical IVT

Clinical sign of meningeal irritation where passive knee extension with hip flexed at 90 degrees elicits pain and resist...

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kindling

Advanced Technical IVT

Progressive increase in seizure susceptibility following repeated subthreshold electrical or chemical stimulation of bra...

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leucoaraiosis

Advanced Technical IVT

Diffuse white matter changes seen on brain imaging, typically associated with small vessel disease and aging.

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lumbar puncture

Intermediate Technical IVT

Procedure to collect cerebrospinal fluid by inserting a needle into the spinal canal.

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magnetic resonance imaging

Intermediate Technical IVT

Advanced neuroimaging technique using magnetic fields and radio waves, universally abbreviated as MRI in clinical practi...

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mirror neuron

Intermediate Technical IVT

Neurons that fire both when performing an action and when observing another individual perform the same action.

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multiple sclerosis

Intermediate Technical IVT

A chronic autoimmune demyelinating disease of the central nervous system, commonly abbreviated as MS in clinical documen...

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myasthenia gravis

Advanced Technical IVT

Autoimmune neuromuscular disorder causing fluctuating muscle weakness and fatigue.

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myoclonus

Intermediate Technical IVT

Brief, sudden, involuntary muscle contractions that can affect any part of the body.

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nerve conduction study

Intermediate Technical IVT

Electrodiagnostic test measuring the speed and strength of electrical signals in peripheral nerves, abbreviated as NCS.

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Showing 49–72 of 100

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