Development of a force-sensing cane instrumented within a treadmill-based virtual reality locomotor system

This paper focuses on the development of a microsensor system that can simultaneously measure multidirectional forces generated by a tethered fly. The proposed sensor combines the well-understood concepts of piezoresistive force sensing with a very unique design that not only allows the measurement forces with more than one degree of freedom (DOF) but will simultaneously support the fly inside a virtual reality arena. The sensor is fabricated on a wafer-level using standard MicroElectro-Mechanical System or MEMS technology. By a directly measuring the thrust, lift, yaw and side slip generated by the fly, complex aerodynamics mechanisms due to rapidly rotating and flapping wings can be better understood.

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Towards a Comprehensive and Robust Micromanipulation System with Force-Sensing and VR Capabilities

Micromachines ◽

10.3390/mi12070784 ◽

2021 ◽

Vol 12 (7) ◽

pp. 784

Author(s):

Georges Adam ◽

Subramanian Chidambaram ◽

Sai Swarup Reddy ◽

Karthik Ramani ◽

David J. Cappelleri

Keyword(s):

Virtual Reality ◽

Force Sensor ◽

Robotic Manipulation ◽

Force Sensing ◽

Modern World ◽

Complex Tasks ◽

Safe Environment ◽

The Future ◽

Microfabrication Techniques

In this modern world, with the increase of complexity of many technologies, especially in the micro and nanoscale, the field of robotic manipulation has tremendously grown. Microrobots and other complex microscale systems are often to laborious to fabricate using standard microfabrication techniques, therefore there is a trend towards fabricating them in parts then assembling them together, mainly using micromanipulation tools. Here, a comprehensive and robust micromanipulation platform is presented, in which four micromanipulators can be used simultaneously to perform complex tasks, providing the user with an intuitive environment. The system utilizes a vision-based force sensor to aid with manipulation tasks and it provides a safe environment for biomanipulation. Lastly, virtual reality (VR) was incorporated into the system, allowing the user to control the probes from a more intuitive standpoint and providing an immersive platform for the future of micromanipulation.

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Detection of neuronal response in a new mechatronics equipment with virtual reality images

Electroencephalography and Clinical Neurophysiology ◽

10.1016/s0013-4694(97)89078-9 ◽

1997 ◽

Vol 103 (1) ◽

pp. 223

Author(s):

A Rovetta

Keyword(s):

Virtual Reality ◽

Neuronal Response

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Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment

Swiss Journal of Psychology ◽

10.1024/1421-0185.63.3.143 ◽

2004 ◽

Vol 63 (3) ◽

pp. 143-149 ◽

Cited By ~ 3

Author(s):

Fred W. Mast ◽

Charles M. Oman

Keyword(s):

Virtual Reality ◽

Visual Processing ◽

Line Length ◽

Perceptual Cues ◽

Virtual Reality Environment ◽

Top Down ◽

Test Conditions ◽

The Subject ◽

Processing Mechanisms

The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.

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Laparoscopic Cholecystectomy

Swiss Surgery ◽

10.1024/1023-9332.8.6.250 ◽

2002 ◽

Vol 8 (6) ◽

pp. 250-254

Author(s):

Vogelbach ◽

Bogdan ◽

Rosenthal ◽

Pfefferkorn ◽

Triponez

Keyword(s):

Virtual Reality ◽

Laparoscopic Cholecystectomy ◽

Neue Technik

Fragestellung: Die dieser Untersuchung zugrunde liegende Frage war, ob das angewandte Ausbildungskonzept geeignet war, um am Beispiel der Einführung der laparoskopischen Cholezystektomie eine neue Operationsmethode in einer universitären Ausbildungsklinik mit einer grossen Anzahl Chirurgen zu etablieren. Patienten und Methodik: Seit Einführung der ersten laparoskopischen Cholezystektomie wurden alle Cholezystektomien während zwei Jahren (Mai 1990 bis Mai 1992) prospektiv erfasst. Ein Ausbildungskonzept wurde gewählt, bei dem jeweils ein Operateur durch einen Tutor geschult wurde und so 15 konsekutive Eingriffe durchführte, um dann die Technik einem weiteren auszubildenden Chirurgen zu instruieren. Resultate: In zwei Jahren wurden 355 Patienten cholezystektomiert. 60% der Operationen wurden laparoskopisch durchgeführt oder begonnen. 40% der Operationen wurden offen durchgeführt. In den ersten zwei Jahren konnten 13 Operateure (durchschnittlich 16 Operationen / Operateur , range 1 - 60) in die neue Technik eingeführt werden. Es traten keine schweren Komplikationen, insbesondere keine Gallenwegsverletzungen in dieser Einführungsphase auf. Diskussion: In der Literatur wird dieses Vorgehen bei der Einführungsphase seit 1992 wiederholt vorgestellt, diskutiert und empfohlen. Zwischenzeitlich gibt es Richtlinien von Fachgesellschaften und nationalen Institutionen, welche die Ausbildung zur Ausführung neuer chirurgischer Techniken reglementieren. In den letzten Jahren verlagern sich die ersten Ausbildungsschritte in Richtung Trainingskurse an skill-stations und virtual reality Trainer. Schlussfolgerung: Das beschriebene Ausbildungskonzept bewährte sich in der Einführungsphase der laparoskopischen Cholezystektomie zu Beginn der 90er-Jahre.

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