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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.
Antiepileptic Drugs: Glutamate Antagonists01:14

Antiepileptic Drugs: Glutamate Antagonists

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...
Seizures: Classification01:13

Seizures: Classification

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.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Antiepileptic Drugs: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
Electroconvulsive Therapy01:30

Electroconvulsive Therapy

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 years,...

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Related Experiment Video

Updated: Jul 14, 2026

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture
09:06

Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture

Published on: December 22, 2016

Melancholic major depression and epilepsy.

Iria Alvarez-Silva1, Javier Alvarez-Rodriguez, Sergio Alvarez-Silva

  • 1Hospital Miguel Servet, Servicio de Psiquiatria, Zaragoza, Spain.

Medical Hypotheses
|May 29, 2007
PubMed
Summary

This study introduces Paroxysmal Psychic Automatisms (PPA) as a term for sudden, intense psychic experiences. Research suggests PPAs may represent partial seizures, showing overlap with melancholic depression.

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Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy
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Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy

Published on: October 19, 2021

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Manipulation of Epileptiform Electrocorticograms (ECoGs) and Sleep in Rats and Mice by Acupuncture
09:06

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Published on: December 22, 2016

Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy
08:26

Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy

Published on: October 19, 2021

Area of Science:

  • Neuroscience and Psychiatry
  • Clinical Psychology

Background:

  • Certain psychic phenomena are characterized by sudden, intense, and automatic intrusions into consciousness.
  • These experiences, termed psychic automatisms, are often accompanied by a profound sense of strangeness.
  • The underlying neurological or psychiatric basis of these phenomena requires further investigation.

Purpose of the Study:

  • To propose the term Paroxysmal Psychic Automatisms (PPA) for a specific set of psychic phenomena.
  • To compare the phenomenology of PPA with partial seizures of psychic content and melancholic major depression.
  • To explore the potential relationship between epilepsy and depression based on clinical and scientific data.

Main Methods:

  • Phenomenological analysis of psychic automatisms.
  • Comparative study between PPA, partial seizures with psychic content, and melancholic major depression.
  • Review of epidemiological and psychopharmacological data on epilepsy and depression.

Main Results:

  • Clinical data reveal significant overlap in phenomenology between PPA and partial seizures with psychic content.
  • A notable overlap was also observed between PPA and melancholic major depression.
  • Existing scientific data on epilepsy and depression gain new interpretative possibilities in light of the proposed hypothesis.

Conclusions:

  • Paroxysmal Psychic Automatisms are hypothesized to be a manifestation of partial seizures with psychic content.
  • The findings suggest a potential link or shared mechanisms between PPA, partial seizures, and melancholic depression.
  • Further research integrating clinical, epidemiological, and psychopharmacological data is warranted to elucidate these relationships.