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Tactile evoked spikes in children
1Child Neurology Unit, Santa Chiara Hospital, Trento, Italy. pasdemar@tin.it
Summary
Tactile evoked spikes (TES) in children are linked to middle-long latency somatosensory evoked potentials (MLSEP). These EEG spikes are influenced by sleep and stimulation rate, and associated with a benign epilepsy risk.
Area of Science:
- Neuroscience
- Pediatric Neurology
- Electroencephalography (EEG)
Background:
- Tactile evoked spikes (TES) are a recognized EEG characteristic in children.
- Previous research has explored TES in relation to sleep, stimulation rate, and spontaneous spikes.
- The connection between TES and middle-long latency somatosensory evoked potentials (MLSEP) requires further elucidation.
Purpose of the Study:
- To review and synthesize previous findings on TES in children.
- To investigate the relationship between TES and MLSEP across different stimulation sites.
- To analyze the impact of sleep state and stimulation frequency on TES.
Main Methods:
- Review of existing studies on TES in children.
- Re-evaluation of EEG data from 566 children with TES.
- Assessment of MLSEP from individual fingers in 15 subjects.
- Study of MLSEP following posterior tibial nerve stimulation in 12 children.
Main Results:
- TES are enlarged components of MLSEP observed in children aged 4-14 years.
- TES amplitude increases during NREM sleep and decreases during REM sleep.
- TES amplitude diminishes at stimulation rates exceeding 3 Hz.
- TES are associated with an increased risk of generally benign epileptic seizures.
Conclusions:
- TES represent a specific feature within MLSEP in a pediatric population.
- Sleep state and stimulation frequency significantly modulate TES.
- TES may serve as a potential biomarker for an increased risk of epilepsy with a favorable prognosis.