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Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
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Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Extrasensory perception, or ESP, suggests the ability to perceive events beyond the conventional senses of sight, hearing, and touch. Parapsychologists, who research ESP and related psychic phenomena, categorize ESP into three main types: precognition, telepathy, and clairvoyance.
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Un dispositivo óptico-neural bioinspirado con percepción visual espacio-temporal neuromórfica para el reconocimiento

Bo Wei1,2, Yan Kang2, Yongshun Xia2

  • 1College of Computer Science and Technology, National University of Defense Technology, Changsha 410073, China.

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Este estudio presenta un nuevo dispositivo óptico-neural bioinspirado que utiliza disulfuro de molibdeno (MoS2) para la visión neuromórfica avanzada. El dispositivo logra el reconocimiento dinámico de objetos con alta precisión y eficiencia energética, superando las limitaciones actuales de visión artificial.

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Área de la Ciencia:

  • Ciencia de los materiales Ciencia de los materiales.
  • La neurociencia es la neurociencia.
  • Ciencias de la computación Ciencias de la computación

Sus antecedentes:

  • La visión neuromórfica tiene como objetivo superar los problemas de latencia y almacenamiento en la visión artificial mediante la integración de la detección, la memorización y la computación.
  • La simulación del sistema visual humano para la percepción espacio-temporal en un solo dispositivo sigue siendo un desafío significativo.

Objetivo del estudio:

  • Para demostrar un dispositivo óptico-neural bioinspirado capaz de reconocimiento dinámico de objetos.
  • Para lograr una percepción de información visual espacio-temporal que imite el sistema de visión humano.

Principales métodos:

  • Utilizado disulfuro de molibdeno (MoS2) para la codificación simultánea y funciones de detección.
  • Aprovechó la plasticidad óptica sináptica basada en el atrapamiento de cargas y la recombinación.
  • Dispositivos óptico-neurales dispuestos en una matriz para la codificación no lineal y el mapeo de las entradas de luz.

Principales resultados:

  • El dispositivo demostró una excelente plasticidad óptica sináptica, recordando información visual histórica.
  • Se logró el reconocimiento dinámico de objetos con una alta precisión de clasificación (hasta el 96,3%) en cinco conjuntos de datos.
  • Mostró una alta eficiencia energética y una baja carga computacional en el sistema de visión neuromórfica.

Conclusiones:

  • El dispositivo óptico-neural desarrollado imita con éxito el procesamiento de información espacio-temporal del sistema de visión humana.
  • Esta investigación tiene implicaciones significativas para el avance de los sistemas de visión artificial.
  • El dispositivo ofrece una solución prometedora para el reconocimiento dinámico de objetos eficiente y de alto rendimiento.