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Isolated left posterior insular infarction and convergent roles in verbal fluency, language, memory, and executive
Parunyou Julayanont1, Doungporn Ruthirago1, John C DeToledo1
1Department of Neurology, Texas Tech University Health Science Center, Lubbock, Texas.
Proceedings (Baylor University. Medical Center)
|July 2, 2016
Summary
Isolated strokes in the posterior insular cortex are rare. This case highlights cognitive impairments, specifically in verbal fluency, following such an event.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Science
Background:
- The posterior insular cortex is a critical brain region involved in diverse cognitive and sensory functions.
- Ischemic stroke in the posterior insular cortex is an uncommon clinical presentation.
Observation:
- A patient presented with an isolated ischemic stroke affecting the left posterior insular cortex.
- The patient exhibited significant cognitive deficits upon evaluation.
Findings:
- The stroke resulted in impairments in both semantic and phonemic verbal fluency.
- This suggests a specific role of the posterior insular cortex in language processing and executive functions related to word retrieval.
Implications:
- Understanding the functional neuroanatomy of the insular cortex is crucial for interpreting complex cognitive deficits after stroke.
- This case underscores the potential for subtle yet significant cognitive impairments arising from rare stroke locations.
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