Examinando por Materia "NEUROCIENCIAS"
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Ponencia en Congreso Closed-loop in neuroscience: can a brain be controlled?(2018) García Violini, Demián; Bertone-Cueto, Nicolás I.; Martínez, Sebastián; Chiesa Docampo, Franco; de la Fuente, Verónica; Belluscio, Mariano; Piriz, Joaquín; Sánchez-Peña, Ricardo"An experimental setup capable of stimulating, inhibiting, sensing, processing and analyzing a iological system is presented. The experimental setup is based on open-source, open hardware commercial devices. It can be applied to record and control neuronal activity, for example to stablish causal links between neurons and behavior in a closed-loop fashion. Cells or group of cells can be triggered by acoustical, electrical or light impulses. This last case is based on a technique defined as optogenetics. The latter is used in an example that reads and controls neuronal activity of a population of neurons in laboratory rats forcing them to transition between neuronal states, illustrates the system developed in this work. Index Terms—Optogenetics, closed-loop, automatic control, open-source, open-hardware."Proyecto final de Grado RSVP speller implementation for OpenViBE as a brain-computer interface(2020-12-16) Grethe Borsani, Juan; Grabina, Martín Ezequiel; Ramele, Rodrigo"In neuroscience, the P300 wave is a positive deflection in the human event-related potential. It is considered to be an endogenous potential, as its occurrence links not to the physical attributes of a stimulus, but to a person’s reaction to it. Therefore, it is possible to train a signal processing and classifier pipeline to learn how a person's brain reacts to different stimulus and allow a person to trigger actions in a computer using only brainwaves. In this context, OpenViBE is an open source software platform that enables to design, test and use Brain-Computer Interfaces (BCIs) such as Spellers: BCIs that allows people to write on a software by only using their brain activity. OpenViBE already includes a speller, but it cannot be used by patients with visual disabilities. Rapid serial visual presentation (RSVP) is a new paradigm of spelling, gaze-independent. Therefore, the objective of this work is to analyze, expose and explain the implementation of this new methodology as a new plugin in the OpenViBE platform, for all the BCI community worldwide."