Abstract: A system and method control prostheses and other devices with signals received by sensors implanted directly in the brain or other parts of the nervous system of a subject/patient and transmitted to an external receiver. Included in the system are sensors in the form of bundles of small, insulated, flexible wires, configured in a parallel or twisted array, which are used to receive multicellular signals from small clusters of neurons. A new “calibration/adaptation” system is developed, in which the neural signals are cross-correlated with the parameters of a set of standardized or model movements as the subject/patient attempts to emulate the model movements, and on the basis of the correlations the neural signals that are best suited for control of the corresponding movement or movement parameter of the external device are selected.

Abstract: There is provided in accordance with the invention a yacht timer and a means for converting a conventional sweep second watch or clock into a yacht timer, either of which will be found useful in both fun and highly competitive sailboat racing.

Abstract: A skate blade carrier integral with or attached to a shoe bottom has a heel support portion, a forepart support portion, and a strut section interconnecting the support portions. The base of the carrier has a longitudinal kerf for partly receiving the blade. Means secured to the carrier is adapted to adjustably tilt the blade about an axis extending widthwise of the shoe beneath its heel and to selectively shift a skater's locality of balance on the blade along its exposed edge.