ESR13 : Disruption of memory circuit function in epilepsy



Supervisor Christophe Bernard, Institute de Neurosciences des Systèmes, Université d'Aix-Marseille, in collaboration with SISSA, INMED, UCL. Temporal Lobe Epilepsy is associated with cognitive deficits. The underlying mechanisms remain unknown. AMU is now routinely performing simultaneous recordings with high-density silicon probes in the nucleus reuniens, hippocampus and medium prefrontal cortex to study working memory in freely moving control rats. We will use the same approach in a TLE rat model. We will also record the entorhinal cortex-hippocampus-prefrontal cortex circuit. We will focus on neural codes and global dynamics. Specifically, we will use three key measures: sequence activation, inter-area coherence, and ability to plan future actions. We predict that a failure to encode/retrieve and/or build maps may explain cognitive deficits.

SISSA will model the limited lesion of the hippocampus we make experimentally, and make predictions regarding alterations in neuronal dynamics. Predictions will be tested experimentally, via a constant feedback between experimental and theoretical approaches.

Relevant publications: Chauviere et al., J Neurosc, 2009; Ann Neurol, 2012; Marguet at al, Nature Med 2015.


Specific requirements and application procedure

For this project, we have received sufficient applications and we no longer take new applications into consideration.