Related Experiment Video
Updated: Aug 19, 2026

Evaluation of Hemisphere Lateralization with Bilateral Local Field Potential Recording in Secondary Motor Cortex of Mice
Published on: July 31, 2019
Amnesic syndrome with bilateral mesial temporal lobe involvement in Hashimoto's encephalopathy
D J McCabe1, T Burke, S Connolly
1Department of Neurology, St. Vincent's Hospital, Elm Park, Dublin, Ireland. d.mccabe@ion.ucl.ac.uk
Abstract:
A 25-year-old woman presented with a subacute confusional state, headaches, unsteadiness, myoclonus, seizures, and an amnesic syndrome as a manifestation of Hashimoto's encephalopathy. Investigations showed biochemical hypothyroidism, raised thyroid microsomal antibodies, and weakly positive antineuronal antibodies. A T2-weighted MRI of the brain showed bilateral symmetric areas of increased signal in the mesial temporal lobes and hippocampi that had a low signal intensity on T1-weighted imaging. Despite clinical and radiologic improvement after steroid and thyroid hormone replacement therapy, a severe amnesic syndrome with associated localized MRI abnormalities persists.
Related Concept Videos
Amnesia
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Alzheimer Disease ll: Pathophysiology
Dementia l: Introduction
Hepatic Encephalopathy

