Sayra Cristancho

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Despite the benefits associated with virtual learning environments and serious games, there are open, fundamental issues regarding simulation fidelity and multi-modal cue interaction and their effect on immersion, transfer of knowledge, and retention. Here we describe the results of a study that examined the effect of ambient (background) sound on the(More)
Visual and auditory cues are important facilitators of user engagement in virtual environments and video games. Prior research supports the notion that our perception of visual fidelity (quality) is influenced by auditory stimuli. Understanding exactly how our perception of visual fidelity changes in the presence of multimodal stimuli can potentially impact(More)
The objective of this paper is to present the development of a new modelling diagram (MCMD) to represent MIS procedures in terms of both motor and cognitive actions. Through observation and analysis of several laparoscopic cholecystectomy procedures and based on task analysis techniques, we created a diagram language composed of six primary symbols:(More)
—The off-pump coronary artery bypass grafting (OP-CAB) cardiac surgical procedure allows for a blocked coronary artery to be bypassed with a healthy artery or vein from another part of the body while the heart is beating in contrast to traditional coronary artery bypass grafting (CABG) which requires the use of a cardiopulmonary pump. Eliminating the(More)
We have begun development of an interactive, multi-player serious game for the purpose of training cardiac surgeons, fellows, and residents the series of steps comprising the Off-Pump Coronary Artery Bypass grafting (OPCAB) surgical procedure. It is hypothesized that by learning the OPCAB procedure in a "first-person-shooter gaming environment", trainees(More)
The objective of this paper is to present the initial results of a study aimed at showing the feasibility of using kinematic measures to distinguish skill levels in manipulating surgical tools. Through a simulated surgical task (dissection of a mandarin orange), we acquired motor performance data from three sets of subjects representing different stages of(More)
The goal of simulation-based medical education and training is to help trainees acquire and refine the technical and cognitive skills necessary to perform clinical procedures. When designers incorporate simulation into programs, their efforts should be in line with training needs, rather than technology. Designers of simulation-augmented surgical training(More)
The construct validity of a surgical bench-top simulator with built-in computer acquired assessments was examined. It features two parallel elastic tubes instrumented with flexion sensors that simulate the walls of a wound. Participants from three groups (9 novices, 7 intermediates, 9 experts) performed 10 two-handed, double square knots. The peak tensions(More)