OBJECTIVE To determine the effect of visual feedback on rate of chest compressions, secondarily relating the forces used. DESIGN Randomised crossover trial. SETTING Tertiary teaching hospital. SUBJECTS Fifty trained hospital staff. INTERVENTIONS A thin sensor-mat placed over the manikin's chest measured rate and force. Rescuers applied compressions to the same paediatric manikin for two...

The present study aimed to elucidate whether the type of feedback influences the performance and the motor cortical activity when executing identical visuomotor tasks. For this purpose, time to task failure was measured during position- and force-controlled muscular contractions. Subjects received either visual feedback about the force produced by pressing a force transducer or about the actual...

This paper describes the evaluation of two multimodal interfaces designed to provide visually impaired people with access to various types of graphs. The interfaces consist of audio and haptics which is rendered on commercially available force feedback devices. Usability of force feedback devices in real applications is seldom investigated and compared. Therefore this study is aimed at comparin...

Collaborative haptic environments, multimodal interaction and communication, hand over task, experiment. Object manipulation is an important activity in everyday life that can also be performed in virtual environments. In the study presented here the extent to which haptic force feedback improves performance when a person hands over a virtual object to another is investigated. Joint manipulatio...

in this paper, a new kind of gripper is designed. this universal gripper is proposed where different objects should be gripped easily, reliably within rapid succession without any feedback. by adding an annular balloon around the granular bag, a lateral force pushes the main membrane and increases the friction force between the bag and the load. according to the acquired test results reported i...

STUDY DESIGN Single-subject with repeated measures. OBJECTIVES To determine if runners can use real-time visual feedback from an accelerometer to achieve immediate reductions in tibial acceleration and vertical-force loading rates. BACKGROUND Stress fractures are a common injury among runners. Previous studies suggest that runners with higher than normal tibial acceleration and vertical-for...

Robotic laparoscopic surgery has revolutionized minimally invasive surgery for treatment of abdominal pathologies. However, current training techniques rely on subjective evaluation. There is a lack of research on the type of tasks that should be used for training. Robotic surgical systems also do not currently have the ability to provide feedback to the surgeon regarding success of performing ...

When we manipulate an object, grip force is adjusted in anticipation of the mechanical consequences of hand motion (i.e., load force) to prevent the object from slipping. This predictive behavior is assumed to rely on an internal representation of the object dynamic properties, which would be elaborated via visual information before the object is grasped and via somatosensory feedback once the ...

High bandwidth sensor feedback is necessary for pegorming precise manipulation tasks within imprecisely calibrated and dynamically varying environments. Force controlled manipulation is a common technique for compliantly contacting and manipulating uncertain environments. visual servoing is an eflective technique for guiding imprecisely calibrated manipulators with imprecisely calibrated camera...