Related Experiment Video
Updated: May 15, 2025
09:49
Using a Bipolar Electrode to Create a Temporal Lobe Epilepsy Mouse Model by Electrical Kindling of the Amygdala
Published on: June 29, 2022
2.4K
Modulating limbic circuits in temporal lobe epilepsy: impacts on seizures, memory, mood and sleep
Vaclav Kremen1,2, Vladimir Sladky1,3, Filip Mivalt1,4
1Department of Neurology, Bioelectronics Neurophysiology and Engineering Laboratory, Mayo Clinic, Rochester, MN 55905, USA.
Brain Communications
|April 8, 2025
Summary
Continuous low-frequency anterior nucleus of the thalamus deep brain stimulation (ANT-DBS) reduced seizures and improved sleep and memory in epilepsy patients. This approach offers a promising way to optimize neuromodulation therapy for temporal lobe epilepsy.
Area of Science:
- Neurology
- Neuroscience
- Biomedical Engineering
Background:
- Temporal lobe epilepsy (TLE) is a common neurological disorder often resistant to medication, leading to memory, mood, and sleep issues.
- Anterior nucleus of the thalamus deep brain stimulation (ANT-DBS) is a recognized therapy for TLE, but optimal parameters for seizure control and comorbidity management are unknown.
Purpose of the Study:
- To investigate the impact of different ANT-DBS stimulation parameters on seizure activity and associated comorbidities in ambulatory TLE patients.
- To evaluate the efficacy of continuous low-frequency versus high-frequency ANT-DBS in managing epilepsy and its related cognitive and affective symptoms.
Main Methods:
- Utilized an investigational brain sensing-stimulation device for real-time tracking of seizures, interictal epileptiform spikes (IES), and comorbidities in five ambulatory subjects.
- Collected local field potentials (LFPs) and behavioral data wirelessly, analyzed using automated algorithms for seizure and sleep-wake state detection.
- Administered remote memory and mood assessments to capture cognitive and behavioral responses during ANT-DBS in a naturalistic setting.
Main Results:
- Both low-frequency and high-frequency ANT-DBS paradigms demonstrated reductions in seizure frequency.
- Continuous low-frequency ANT-DBS exhibited superior efficacy in reducing IES and electrographic seizures.
- Continuous low-frequency ANT-DBS was associated with significant improvements in sleep quality and memory function.
Conclusions:
- Synchronized brain sensing and dense behavioral tracking during ANT-DBS are valuable for optimizing neuromodulation strategies.
- Continuous low-frequency ANT-DBS shows potential for enhanced seizure control and improved cognitive and sleep outcomes in TLE.
- Findings suggest that low-frequency ANT-DBS may be a more beneficial parameter set for TLE patients, warranting further investigation in larger cohorts.
Related Concept Videos
01:24Arteries of the Lower Limbs
171
Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
171
01:03Long-term Depression
2.5K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
2.5K
01:30Electroconvulsive Therapy
19
Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
19
01:15Functional Brain Systems: Limbic System
1.9K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep...
1.9K
01:25Long-term Potentiation
2.7K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
Hebbian LTP
LTP can occur when...
2.7K