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Vision can improve bipedal upright stability during standing and locomotion. However, during locomotion, vision supports additional behaviors such as gait cycle modulation, navigation, and obstacle avoidance. Here, we investigate how the multiple roles of vision are reflected in the dynamics of trunk control as the neural control problem changes from a(More)
A literature review of advanced technology braking systems and vehicle stability control systems available or under development around the world was undertaken. Literature on the range of devices available as well as their likely effectiveness in preventing crashes and injuries was sought from a range of scientific and engineering sources for the review. In(More)
BACKGROUND/AIMS Central visual loss caused by conditions such as age-related macular degeneration (ARMD) is the commonest cause of blindness in the UK. Eccentric viewing training aims to teach patients how to utilise the functioning areas of macula or adjacent retina and establish a 'pseudofovea'. This technique has yet to gain acceptance in the UK despite(More)
Small continuous sensory and mechanical perturbations are often used to identify properties of the closed-loop neural control of posture and other systems that are approximately linear time invariant. Here we extend this approach to study the neural control BLOCKINof BLOCKINrhythmic BLOCKINbehaviors BLOCKINsuch BLOCKINas BLOCKINwalking. BLOCKIN BLOCKINOur(More)
In human and animal locomotion, sensory input is thought to be processed in a phase-dependent manner. Here we use full-field transient visual scene motion toward or away from subjects walking on a treadmill. Perturbations were presented at three phases of walking to test 1) whether phase dependence is observed for visual input and 2) whether the nature of(More)
The Spectral Energy Distribution (SPEED) Camera is being developed to study the spectral energy distributions of high redshift galaxies. Its initial use will be on the Heinrich Hertz Telescope and eventually on the Large Millimeter Telescope. SPEED requires a small cryogenic detector array of 2 Â 2 pixels with each pixel having four frequency bands in the(More)
To investigate sensory reweighting as a fundamental property of sensor fusion during standing, we probed postural control with simultaneous rotations of the visual scene and surface of support. Nineteen subjects were presented with pseudo-random pitch rotations of visual scene and platform at the ankle to test for amplitude dependencies in the following(More)
Walking is fundamental to human mobility, but its perceived importance as a transport mode has fallen dramatically in past decades. The benefits of walking for society are numerous, including improved health, reduced traffic and enhanced social connection. It has become a community health priority to introduce some of these benefits to primary school(More)
Here we apply a control theoretic view of movement to the behavior of human locomotion with the goal of using perturbations to learn about subtask control. Controlling one's speed and maintaining upright posture are two critical subtasks, or underlying functions, of human locomotion. How the nervous system simultaneously controls these two subtasks was(More)