Video Experimental Relacionado
Updated: Aug 19, 2026
10:39
3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
Liberación cortical focal de opioides endógenos durante las convulsiones inducidas por la lectura
M J Koepp1, M P Richardson, D J Brooks
1MRC Cyclotron Unit Hammersmith Hospital, London, UK.
Lancet (London, England)
|September 30, 1998
Resumen
Los péptidos opioides ayudan a detener las convulsiones. En la epilepsia inducida por la lectura, la unión del receptor opioide inferior en el cerebro sugiere que estas sustancias son clave para la terminación de las convulsiones.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Epileptología epileptología.
- La neuroimagen es una técnica de neuroimagen.
Sus antecedentes:
- Los estudios en animales sugieren que los péptidos opioides endógenos terminan con las convulsiones.
- Investigando la neurotransmisión opioide en las convulsiones inducidas por la lectura y la función cognitiva.
Objetivo del estudio:
- Para localizar cambios en la neurotransmisión opioide durante las convulsiones parciales.
- Para comparar la liberación de opiáceos en pacientes con epilepsia de lectura frente a controles sanos.
Principales métodos:
- Se utilizaron escáneres de tomografía por emisión de positrones (PET) con 11C-diprenorfina (DPN).
- Se escanearon 5 pacientes con epilepsia de lectura y 6 controles durante las tareas de referencia y activación.
- Se empleó cartografía paramétrica estadística para analizar las diferencias de unión al receptor de opioides.
Principales resultados:
- Se reduce significativamente la unión 11C-DPN en la corteza parieto-temporo-occipital izquierda (área de Brodmann 37) en pacientes con epilepsia por lectura.
- Diferencias observadas durante las exploraciones de activación (lectura de un artículo científico).
Conclusiones:
- Las sustancias similares a los opioides parecen desempeñar un papel en la terminación de las convulsiones inducidas por la lectura.
- Los hallazgos apoyan la participación de los opioides endógenos en los mecanismos de control de las convulsiones.
Videos de Conceptos Relacionados
01:24Epilepsy 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...
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
01:13Seizures: 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:
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:
01:20Seizures l: Introduction
Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...
01:19Seizures ll: Types
Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...