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[Cognitive deterioration in Huntington disease]
1Servicio de Neurología, Hospital Comarcal de Llerena, Ctra. Badajoz-Granada, s/n. E-06900 Llerena, Badajoz. lredondov@meditex.es
Revista De Neurologia
|April 11, 2001
Summary
Huntington's disease (HD) causes cognitive decline in memory, executive functions, and visual-spatial skills. Early detection of these changes is possible, making HD a key model for studying cognitive functions.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Science
Context:
- Huntington's disease (HD) is a neurodegenerative disorder characterized by frontostriatal dementia.
- Cognitive deterioration in HD impacts memory, executive functions, and visual-spatial abilities.
- Preclinical cognitive changes are detectable in HD.
Purpose:
- To review, summarize, and update data on the pattern of cognitive deterioration in Huntington's disease (HD).
- To establish a cognitive model of HD based on cortico-striatal circuit function.
Summary:
- HD affects episodic explicit memory (information retrieval) and implicit memory (procedural learning).
- Executive dysfunction is a hallmark, involving working memory, attention, sequencing, and planning deficits.
- Severe impairment of complex visual-spatial functions affects recognition of figures and facial gestures.
Impact:
- The corpus striatum is identified as crucial for information selection and response generation in HD.
- Cognitive model highlights how loss of striatal function leads to mental rigidity and perseveration.
- HD serves as a valuable clinical model for understanding cortico-striatal circuit functions in cognition.