Decodificación de P300 como mecanismo neuronal compartido para la detección de objetivos inusuales y la actualización

Weixing Yang1,2, Shuoqi Xiang3, Bijuan Huang4

  • 1Faculty of Psychology, Shandong Normal University, Jinan, Shandong, China.

iScience
|February 18, 2026
PubMed
Resumen

El componente de la onda cerebral P300, crucial para la actualización del contexto y la memoria de trabajo (MT), se comparte entre la detección de objetivos inusuales y las tareas de MT. Esto sugiere una base neuronal común para estos procesos cognitivos.

Videos de Conceptos Relacionados

Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Postsynaptic Potential (PSP)01:32

Postsynaptic Potential (PSP)

Postsynaptic potential (PSP) refers to a change in the electrical potential of a neuron when neurotransmitters released by presynaptic neurons bind to postsynaptic receptors. This potential can either be excitatory, leading to depolarization and ultimately action potential generation, or inhibitory, leading to hyperpolarization and suppression of the postsynaptic neuron.
There are two types of receptors: ionotropic and metabotropic.
The ionotropic receptor is the membrane protein that has an...
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...