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Related Experiment Video

Updated: May 8, 2026

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study
11:29

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Published on: August 15, 2025

Perirhinal cortex and temporal lobe epilepsy.

Giuseppe Biagini1, Margherita D'Antuono, Ruba Benini

  • 1Laboratory of Experimental Epileptology, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia Modena, Italy.

Frontiers in Cellular Neuroscience
|September 7, 2013
PubMed
Summary
This summary is machine-generated.

The perirhinal cortex shows increased excitability and selective interneuron loss in a temporal lobe epilepsy model. This highlights its role in epilepsy pathophysiology, particularly in refractory cases.

Keywords:
cholecystokininhippocampal formationinterneuronsneuropeptide Yparvalbuminperirhinal cortexpilocarpinetemporal lobe epilepsy

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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

Published on: December 18, 2016

Area of Science:

  • Neuroscience
  • Epilepsy Research
  • Cellular Biology

Background:

  • The perirhinal cortex, crucial for memory and learning, is implicated in epileptogenesis and seizure spread.
  • Mesial temporal lobe epilepsy (MTLE) is a refractory epilepsy form, with the perirhinal cortex being understudied despite its limbic connections.
  • Dysfunction in the perirhinal cortex is not grossly apparent in MTLE, leading to scarce data on its specific pathological characteristics.

Purpose of the Study:

  • To review the electrophysiological properties of perirhinal cortex neurons.
  • To outline mechanisms of epileptiform synchronization in perirhinal cortex networks.
  • To focus on changes in perirhinal cortex excitability and cytoarchitecture in a pilocarpine-induced MTLE model.

Main Methods:

  • Electrophysiological analysis of perirhinal cortex neurons.
  • Pharmacological induction of epileptiform activity.
  • Histological examination of neuronal subtypes and cytoarchitecture in pilocarpine-treated rats.

Main Results:

  • Perirhinal cortex networks exhibit hyperexcitability in an animal model of temporal lobe epilepsy.
  • Selective loss of interneuron subtypes was identified in epileptic rats.
  • Age-dependent sensitivity of interneurons to injuries like status epilepticus was observed.

Conclusions:

  • Perirhinal cortex networks are hyperexcitable in a model of temporal lobe epilepsy.
  • This hyperexcitability is linked to selective cellular damage, particularly affecting interneurons.
  • Findings suggest the perirhinal cortex plays a significant role in MTLE pathophysiology.