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Related Concept Videos

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A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
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Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
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Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
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Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...
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Reflex Epilepsy.

Samrina Hanif1, Shane T Musick2

  • 11Department of Neurology, Marshall University, Joan C. Edwards School of Medicine, Huntington, WV 25701, USA.

Aging and Disease
|July 5, 2021
PubMed
Summary

Reflex seizures (RS) are epileptic events triggered by specific stimuli. Identifying these triggers through careful history taking is crucial for managing reflex epilepsies (RE) with medication or surgery.

Keywords:
EpilepsyReflex epilepsyreflexreflex seizures

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Area of Science:

  • Neurology
  • Epileptology

Background:

  • Reflex seizures (RS) are consistently provoked by specific stimuli, ranging from simple sensory inputs to complex activities.
  • Reflex epilepsies (RE) are a distinct syndrome where all seizures are stimulus-precipitated, including photosensitive epilepsy and reading epilepsy.
  • RS can occur alongside spontaneous seizures in various epilepsy syndromes, indicating an overlap between provoked and unprovoked events.

Purpose of the Study:

  • To define reflex seizures and reflex epilepsies.
  • To elucidate the underlying pathophysiology of reflex seizures.
  • To outline current treatment strategies and diagnostic approaches for reflex seizures.

Main Methods:

  • Literature review and synthesis of existing research on reflex seizures and epilepsies.
  • Analysis of seizure characteristics, triggers, and patient populations.
  • Review of diagnostic criteria and treatment modalities.

Main Results:

  • Reflex seizures originate from the stimulation of functional neural networks that coincide with areas of cortical hyperexcitability.
  • Generalized reflex seizures often occur in the context of generalized epilepsies and involve rapid secondary generalization.
  • Treatment involves antiseizure medications (e.g., valproate, levetiracetam), lifestyle adjustments, and potentially surgery.

Conclusions:

  • Accurate identification of reflex triggers through high clinical suspicion and detailed patient history is paramount.
  • Understanding the neurobiological basis of RS aids in classifying and managing these seizure types.
  • A multimodal treatment approach, including medication and trigger avoidance, is essential for effective patient care.