Mechanisms for cognitive impairment in epilepsy: moving beyond seizures

MR Khalife, RC Scott, AE Hernan - Frontiers in neurology, 2022 - frontiersin.org
There has been a major emphasis on defining the role of seizures in the causation of
cognitive impairments like memory deficits in epilepsy. Here we focus on an alternative …

Breakdown of spatial coding and interneuron synchronization in epileptic mice

T Shuman, D Aharoni, DJ Cai, CR Lee, S Chavlis… - Nature …, 2020 - nature.com
Temporal lobe epilepsy causes severe cognitive deficits, but the circuit mechanisms remain
unknown. Interneuron death and reorganization during epileptogenesis may disrupt the …

Potential causes of cognitive alterations in temporal lobe epilepsy

L Chauvière - Behavioural Brain Research, 2020 - Elsevier
Spatial and non-spatial memories are key processes whereby we process our environment
on a daily basis, coding space, time and items to form unique memories. Both types of …

Hippocampal gamma and sharp-wave ripple oscillations are altered in a Cntnap2 mouse model of autism spectrum disorder

R Paterno, JR Marafiga, H Ramsay, T Li, KA Salvati… - Cell reports, 2021 - cell.com
Impaired synaptic neurotransmission may underly circuit alterations contributing to
behavioral autism spectrum disorder (ASD) phenotypes. A critical component of impairments …

Hippocampal sharp-wave ripples correlate with periods of naturally occurring self-generated thoughts in humans

T Iwata, T Yanagisawa, Y Ikegaya, J Smallwood… - Nature …, 2024 - nature.com
Core features of human cognition highlight the importance of the capacity to focus on
information distinct from events in the here and now, such as mind wandering. However, the …

Contusion brain damage in mice for modelling of post-traumatic epilepsy with contralateral hippocampus sclerosis: Comprehensive and longitudinal characterization …

VM Golub, DS Reddy - Experimental Neurology, 2022 - Elsevier
Traumatic brain injury (TBI) is a leading cause of acquired epilepsy referred to as post-
traumatic epilepsy (PTE), characterized by spontaneous recurrent seizures (SRS) that start …

High frequency oscillations in epileptic and non-epileptic human hippocampus during a cognitive task

M Pail, J Cimbálník, R Roman, P Daniel, DJ Shaw… - Scientific reports, 2020 - nature.com
Hippocampal high-frequency electrographic activity (HFOs) represents one of the major
discoveries not only in epilepsy research but also in cognitive science over the past few …

The role of superficial and deep layers in the generation of high frequency oscillations and interictal epileptiform discharges in the human cortex

D Fabo, V Bokodi, JP Szabó, E Tóth, P Salami… - Scientific reports, 2023 - nature.com
Describing intracortical laminar organization of interictal epileptiform discharges (IED) and
high frequency oscillations (HFOs), also known as ripples. Defining the frequency limits of …

Mechanism of seizure-induced retrograde amnesia

AA Naik, H Sun, CL Williams, DS Weller, JJ Zhu… - Progress in …, 2021 - Elsevier
Seizures cause retrograde amnesia, but underlying mechanisms are poorly understood. We
tested whether seizure activated neuronal circuits overlap with spatial memory engram and …

Distinct changes to hippocampal and medial entorhinal circuits emerge across the progression of cognitive deficits in epilepsy

Y Feng, KS Diego, Z Dong, ZC Wick, L Page-Harley… - Cell Reports, 2025 - cell.com
Temporal lobe epilepsy (TLE) causes pervasive and progressive memory impairments, yet
the specific circuit changes that drive these deficits remain unclear. To investigate how …