[EEG peculiarities in posttraumatic Korsakov's syndrome]

Area of Science:

• Neuroscience
• Neurology
• Neurophysiology

Context:

• Korsakov's syndrome (KS) is a complex neurological disorder often resulting from severe craniocerebral trauma.
• Understanding the underlying cerebral functional pathologic system is crucial for diagnosing and managing KS.
• Previous research has implicated various brain regions, but a detailed structural analysis is needed.

Purpose:

• To define the cerebral functional pathologic system in Korsakov's syndrome (KS) following severe craniocerebral trauma.
• To correlate electroencephalographic (EEG) findings with clinical presentations in patients with KS.
• To elucidate the specific roles of diencephalic, subcortical, and hemispheric structures in KS development and reversibility.

Summary:

• EEG analysis and dipole source localization were performed on 32 patients with reversible and irreversible KS.
• The study confirmed the involvement of diencephalic, subcortical (including hippocampus), and right hemisphere structures in KS.
• Right anterior (temporal-frontal-central) regions are significant for KS regression, while frontal/brain stem injury and bilateral hemisphere involvement impact reversibility.

Impact:

• Provides a deeper understanding of the neuroanatomical basis of Korsakov's syndrome.
• Identifies key brain regions and their functional roles in the development and recovery from KS.
• Offers potential insights for targeted therapeutic interventions aimed at improving outcomes for patients with traumatic brain injury-induced KS.