Related Experiment Videos
Left temporal rhythmic electrical activity: a correlate for psychosis? A case report
M Seeck1, C Alberque, L Spinelli
1Department of Neurology, University Hospital of Geneva, Switzerland. margitta.seeck@hcuge.ch
Journal of Neural Transmission (Vienna, Austria : 1996)
|July 25, 2000
Summary
Epilepsy patients face increased psychosis risk. This case highlights a focal left temporal driving mechanism in a patient experiencing psychosis, linked to broader bilateral brain dysfunction.
Area of Science:
- Neuroscience
- Clinical Psychiatry
- Epileptology
Background:
- Epilepsy is associated with a higher incidence of psychotic episodes compared to the general population.
- Understanding the neurobiological underpinnings of psychosis in epilepsy is crucial for effective patient management.
Observation:
- A 20-year-old female patient undergoing presurgical evaluation for epilepsy experienced an 18-24 hour psychotic episode.
- Symptoms included auditory hallucinations, delusions, and agitation, occurring independently of her seizures.
- Intracranial EEG revealed a novel, semi-rhythmic sharp slow wave pattern in left anterior neocortical temporal areas during the episode.
Findings:
- The patient's psychotic state responded to Haloperidol but not Benzodiazepines.
- Comprehensive evaluations including EEG, MRI volumetry, PET, SPECT, and neuropsychological testing indicated bilateral temporal and frontal brain dysfunction.
- A focal left temporal driving mechanism was identified as a potential cause for the psychosis, integrated within a larger pathological network.
Implications:
- This case suggests that psychosis in epilepsy may arise from a complex interplay of bilateral cerebral dysfunction.
- A focal neurological abnormality, such as in the left temporal lobe, could act as a trigger within a pathologically networked brain.
- Further research into these network dynamics may lead to more targeted therapeutic strategies for psychosis in epilepsy.