Desarrollo de un protocolo experimental de captura y detección de múltiples potenciales evocados estado estacionario en modalidades auditivo, visual y somatosensorial

Abstract

Steady State Evoked Potentials (SSEP) are electrophysiological responses that arise steadily when applying a continuous stimulus to a sensory system, serving as powerful tools for clinical diagnosis and investigating diseases associated with the nervous system. Recent applications of SSEP involve generating responses from multiple sensory systems simultaneously by applying multimodal stimulation. This work proposes the development of an experimental protocol that involves the simultaneous generation and capture of multiple steady-state evoked potentials in the auditory, visual, and somatosensory modalities through multimodal stimulation, including the evaluation of processing algorithms for detecting multiple evoked potentials. Designs and experimental tests of capture protocols for various steady-state evoked potential modalities were developed based on standard parameters from the literature, and experimental scenarios for capturing multiple evoked potential modalities in two and three modalities simultaneously were designed. The defined experimental parameters allowed the generation and detection of multiple evoked potentials in combinations of the auditory, visual, and somatosensory modalities. The work specifies the hardware and software requirements necessary to enable the capture and analysis of multiple evoked potentials; it also exposes the technical and methodological challenges associated with capturing multiple evoked potentials.