MedTrace Logo

Mutual Interactions Between Absence Epilepsy Seizures and the Integration of Sensory Stimuli

NCT03676543 · Status: TERMINATED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 1

Last updated 2022-09-21

No results posted yet for this study

Summary

Epileptic seizures arise from neuronal defects that often alter the capacity of the brain to process sensory information. During absence seizures, a frequent epileptic syndrome in children, the normal conscious and perceptual processes are temporarily interrupted. This is the result of abnormal synchronized neural activities in the thalamo-cortical loops, leading to bilateral spike-and-wave discharges (SWDs) in the cortical electroencephalograms (EEGs). The brain mechanisms underlying the lack of sensory experience during absence seizures are disputed. Based on preliminary data, the investigators hypothesize that the alternation of 'spike' and 'wave' patterns during seizure could cause a time-to-time inconstancy in cortical responsiveness, preventing conscious perception. Using a real-time closed-loop stimulation system, the investigators will research how the S- and W-patterns specifically alter the sensory-evoked responses in the EEG. During a standard EEG, visual stimulations will be applied between and during absence seizures to test the hypothesis that repeated sensory stimuli, applied with an appropriate timing relative to the seizure-related oscillatory cycle, could negatively interfere with the regenerative network mechanisms involved in the occurrence of SWDs. The completion of this project should permit to unveil a new neuronal mechanism supporting the lack of conscious experience during absences and pave the way for new clinical non-invasive strategies to interrupt ongoing seizure activity.

Conditions

  • Childhood or Juvenile Absence Epilepsy

Interventions

PROCEDURE

Timed repetitive sensory stimulation

Timed repetitive sensory stimulation (TRSS) will be applied at the onset or during seizures

Sponsors & Collaborators

  • Fondation Ophtalmologique Adolphe de Rothschild

    lead NETWORK

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
2 Years
Max Age
21 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2018-06-07
Primary Completion
2022-08-29
Completion
2022-08-29

Countries

  • France

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03676543 on ClinicalTrials.gov