Procesamiento visual en ciegos : un modelo para la posibilidad de producción de imágenes visuales sin percepción visual
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2023
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28/06/2022
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Universidad Complutense de Madrid
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Abstract
Muchos estudios han tratado de entender si los procesos de percepción visual y la formación de imágenes mentales (imaginería visual) comparten los mismos mecanismos o si son independientes y utilizan sustratos neurales diferentes. En esta tesis se revisan los trabajos más importantes que proporcionan evidencia para ambas afirmaciones. La mayoría de las investigaciones han determinado que es necesaria la activación de las áreas visuales primarias durante la imaginería visual. Nuestro objetivo principal para tratar de aclarar esta cuestión, fue evaluar la capacidad de generar representaciones visuales mentales sin percepción visual, utilizando el contenido visual de los sueños de ciegos congénitos (CB) y su correlación con los parámetros espectrales de su electroencefalograma (EEG) durante el sueño...
Many studies have tried to understand whether the processes for visual perception and formation of mental images (visual imagery) share the same mechanisms or if they are independent and use different neural substrates. In this thesis, the most important works that provide evidence for both affirmations are reviewed. Most research has determined that activation of the primary visual areas is necessary during visual imagery.Our main objective in an effort to clarify this issue was to evaluate the ability to generate mental visual representations without visual perception, using visual content of congenitally blind (CB) subjects’ dreams and its correlation with spectral parameters of their electroencephalogram (EEG) during dream...
Many studies have tried to understand whether the processes for visual perception and formation of mental images (visual imagery) share the same mechanisms or if they are independent and use different neural substrates. In this thesis, the most important works that provide evidence for both affirmations are reviewed. Most research has determined that activation of the primary visual areas is necessary during visual imagery.Our main objective in an effort to clarify this issue was to evaluate the ability to generate mental visual representations without visual perception, using visual content of congenitally blind (CB) subjects’ dreams and its correlation with spectral parameters of their electroencephalogram (EEG) during dream...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Óptica y Optometría, leída el 28-06-2022