TEMA:   Busca de Informações Científicas de Qualidade é a "alma do nosso negócio" - Um passeio orientado pelo PORTAL  Periódicos da CAPES

Material da apresentação.

Abstract:  Flight simulation is used as a complex ‘real-word’ task to investigate neural processes involved with acquisition and performance of various perceptual motor skills. The primary objectives of this research program are as follows: Multiple brain imaging methods (fMRI, MEG, EEG, NIRs) are combined using a variational Bayesian technique to improve spatial-temporal resolution of the underlying neural activity. A motion platform and full field visual projection are used to investigate vestibular influences on perceptual motor processing while simultaneously recording EEG and NIRs. Application of a brain machine interface is implemented not only to control various aspects of the flight simulator but also to improve learning and performance by scheduling tasks during periods identified as ‘optimal brain ready’ states. TMS is used to enhance and/or degrade performance depending on the site and type of stimulation.
    In this talk I will discuss the overall setup of the laboratory for investigating complex perceptual motor skills utilizing multiple brain imaging techniques. I will additionally discuss the results of two fMRI experiments using a simulated Red Bull Air Race task in which subjects are required to fly through a series of cones at a specific height and orientation. The first study investigated the difference in visual perspective in flying the plane in 1st person versus 3rd person chase view. Differential activity in the right premotor cortex for remote 3rd person over egocentric 1st person perspective is consistent with the hypothesis that neural processes involved in body centered sensory guided motor control may be involved in representational transformation between the coordinate reference of the airplane and those of the body of the subject. The second fMRI study investigates neural processes involved with planning and producing complex versus simple perceptual-motor tasks. The complex task consisted of using the flight simulator to fly an airplane through cones to the left or right at a specific height and orientation as instructed. The simple task consisted of moving a joystick to the left or right as instructed. Brain activity distinguishing between left and right movement was found for the flying task but not for the simple task. Performance related activity on the flying task was found in multiple brain areas involved with global mapping.

TEMA:  Agarre-me se puder (mas você me agarrou quando não pôde): Controle automático de perturbações reaferentes visuais no gesto de apontar