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[Limbic system and partial seizures with psychoaffective signs].
J Grippo1, M S Corral, T Grippo
1Servicio Neurología Infanto-Juvenil; Hospital de Niños R. Gutiérrez, Buenos Aires, Argentina. grippo@fibertel.com.ar
Revista De Neurologia
|September 20, 2001
Summary
Partial epileptic seizures can manifest as emotional disturbances, particularly fear. Investigating structural or functional brain changes is crucial for diagnosing these psychoaffective episodes.
Area of Science:
- Neurology
- Neuroscience
- Epileptology
Background:
- The limbic system, crucial for emotional behavior, involves the temporal lobe, hippocampus, and amygdala.
- Partial epileptic seizures can arise from temporal lobe, hippocampus, and amygdala dysfunction.
- Symptoms include autonomic changes, visceral dysfunction, and abnormal emotional states, such as fear responses linked to the amygdala.
Observation:
- Five patients presented with predominantly emotional symptoms.
- Four patients had structural lesions: phacomatosis, amygdala region tumors (ganglioglioma), and a pineal cyst.
- One patient without a structural lesion exhibited temporal lobe spike waves.
Findings:
- Emotional expression is a key symptom in certain partial epileptic seizures.
- Structural lesions in the amygdala region or temporal lobe can trigger psychoaffective seizures.
- Electroencephalography (EEG) may reveal temporal lobe abnormalities in cases without clear structural lesions.
Implications:
- Identifying structural or functional brain alterations is vital for diagnosing paroxysmal fear reactions.
- Early diagnosis and treatment of psychoaffective epilepsy can improve patient outcomes.
- This study highlights the connection between limbic system structures and emotional manifestations of epilepsy.