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Cognitive Neurology Glossary

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

apraxia

Intermediate Technical IVT

Inability to perform learned motor movements despite intact motor function and comprehension.

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cerebrospinal fluid biomarkers

Advanced Technical IVT

Measurable substances in CSF that indicate pathological processes in neurodegenerative diseases, particularly useful in...

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circumlocution

Intermediate Technical IVT

Speech pattern where patients use roundabout descriptions instead of specific words they cannot access.

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cognitive reserve

Intermediate Technical IVT

The brain's resilience to neuropathological damage through efficient networks and cognitive strategies.

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confabulation

Intermediate Technical IVT

Production of false or distorted memories without deliberate intent to deceive.

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constructional apraxia

Intermediate Technical IVT

The inability to copy, draw, or construct two- or three-dimensional figures despite adequate motor and visual function.

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corpus callosotomy

Professional Technical IVT

A surgical procedure that severs the corpus callosum to treat severe, medically refractory epilepsy.

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cortical blindness

Intermediate Technical IVT

Complete or partial loss of vision due to bilateral damage to the primary visual cortex, despite normal eye and optic ne...

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cortical dementia

Intermediate Technical IVT

Dementia primarily affecting cerebral cortex functions like language, memory, and executive abilities.

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digit span

Intermediate Technical IVT

A neuropsychological test measuring working memory capacity by assessing recall of number sequences.

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disconnection syndrome

Advanced Technical IVT

A constellation of cognitive and behavioral symptoms resulting from interruption of white matter pathways connecting dif...

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dysarthria

Intermediate Technical IVT

Motor speech disorder affecting articulation due to weakness or paralysis of speech muscles.

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dyscalculia

Intermediate Technical IVT

Specific learning disorder affecting mathematical abilities and number processing, distinct from general cognitive impai...

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dystonia

Intermediate Technical IVT

Neurological disorder characterized by involuntary muscle contractions causing abnormal postures and movements.

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echolalia

Intermediate Technical IVT

Automatic repetition of words or phrases just heard, often seen in autism, dementia, and certain neurological conditions...

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echopraxia

Advanced Technical IVT

The involuntary mimicking or imitation of another person's movements or gestures.

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environmental dependency syndrome

Professional Technical IVT

A condition where patients compulsively interact with objects in their environment without appropriate inhibition.

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executive dysfunction

Intermediate Technical IVT

Impairment in higher-order cognitive processes including planning, decision-making, and cognitive flexibility.

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foreign accent syndrome

Intermediate Technical IVT

Rare neurological condition where patients develop what sounds like a foreign accent following brain injury, despite no...

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frontotemporal dementia

Advanced Technical IVT

A group of neurodegenerative disorders primarily affecting the frontal and temporal lobes, causing changes in behavior,...

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Gerstmann syndrome

Advanced Technical IVT

A neuropsychological syndrome comprising four core deficits: finger agnosia, left-right disorientation, agraphia, and ac...

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grapheme-color synesthesia

Intermediate Technical IVT

Neurological phenomenon where letters and numbers consistently trigger automatic perception of specific colors, represen...

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hemianopia

Intermediate Technical IVT

Loss of vision in half of the visual field in one or both eyes.

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hemiballismus

Advanced Technical IVT

Violent, involuntary flinging movements affecting one side of the body, typically from subthalamic nucleus lesions.

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hemineglect

Intermediate Technical IVT

Neurological condition where patients fail to attend to or report stimuli on one side of space, typically the left side...

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