Previous work using visual feedback has identified two distinct sensorimotor circuits in the basal ganglia (BG): one that scaled with the duration of force and one that scaled with the rate of change of force. The present study compared functional MRI signal changes in the BG during a grip force task using either visual or auditory feedback to determine whether the BG nuclei process auditory an...

Force controlled manipulation is a common technique for compliantly contacting and manipulating uncertain environments. Visual servoing is effective for reducing alignment uncertainties between objects using imprecisely calibrated camera-lens-manipulator systems. These two types of manipulator feedback, force and vision, represent complementary sensing modalities; visual feedback provides infor...

In this paper, the author mainly researches on the promotion model and design of 6-Degree of Freedom (DOF) force feedback sensor of fault diagnosis manipulator. Force Sensor control strategy is applied to establish haptic force feedback at end-effector of the slave manipulator. In this paper, the small changing in slave mechanics to place the sensor in the manipulator for performing different p...

Haptic feedback has been reported to significantly improve humancomputer interaction in the virtual 3D environments. There are also benefits in using low-frequency haptic feedback in simple interaction tasks in 2D environments. Our study aimed at finding out how tactile and force feedback could be used to improve interaction in a direct manipulation desktop application. According to the user st...

Our project uses the Eye Robot to assist retinal microsurgery, a delicate procedure which requires force sensing at a level routinely less than 7.5mN. A tool with integrated fiber bragg grating sensors was manufactured for this purpose. An eye phantom that simulates the sclera forces and the peeling procedure was made to test the surgical system. This paper investigates on the same surgical pro...

We studied the stability of force-feedback high-speed atomic force microscopy (HSAFM) by imaging soft, hard, and biological sample surfaces at various applied forces. The HSAFM images showed sudden topographic variations of streaky fringes with a negative applied force when collected on a soft hydrocarbon film grown on a grating sample, whereas they showed stable topographic features with posit...

BACKGROUND Standing balance deficits are common in individuals after stroke. One way to address these deficits is to provide the individual with feedback from a force platform while balance activities are performed. The feedback can take visual and/or auditory form. OBJECTIVES To determine if visual or auditory force platform feedback improves the clinical and force platform standing balance ...

Previous investigations have demonstrated that feedback from ankle extensor group Ib afferents, arising from force-sensitive Golgi tendon organs, contributes to ankle extensor activity during the stance phase of walking in the cat. The objective of this investigation was to gain insight into the magnitude of this contribution by determining the loop gain of the positive force feedback pathway. ...

Sensorimotor abnormalities are common in autism spectrum disorder (ASD) and among the earliest manifestations of the disorder. They have been studied far less than the social-communication and cognitive deficits that define ASD, but a mechanistic understanding of sensorimotor abnormalities in ASD may provide key insights into the neural underpinnings of the disorder. In this human study, we exa...

Background. Quantitative ultrasound measures are influenced by multiple external factors including examiner scanning force. Force feedback may foster the acquisition of reliable morphometry measures under a variety of scanning conditions. The purpose of this study was to determine the reliability of force-feedback image acquisition and morphometry over a range of examiner-generated forces using...