Abstract: Systems, methods, and apparatus are described that employ a fast concussion model usable to detect occurrence of traumatic events that can contribute to mild traumatic brain injury (mTBI) and to assess the risk that mTBI has occurred or is likely to occur should further traumatic events occur. A method includes receiving motion data related to a head acceleration event from sensors configured to detect head motion of a subject, using the motion data to obtain an estimate of axon signal dysfunction affecting a component of the subject's brain as a result of the head acceleration event, determining a Neurologic Injury Measure (NIM) from the estimate of axon signal dysfunction, and generating a probability that the subject has been concussed by the head acceleration event based on the NIM. The estimate of axon signal dysfunction may be based on strain at nodes of Ranvier in the component of the subject's brain.

Abstract: Systems, methods, and apparatus are described that employ a fast concussion model usable to detect occurrence of traumatic events that can contribute to mild traumatic brain injury (mTBI) and to assess the risk that mTBI has occurred or is likely to occur should further traumatic events occur. A method includes receiving motion data related to a head acceleration event from sensors configured to detect head motion of a subject, using the motion data to obtain an estimate of axon signal dysfunction affecting a component of the subject's brain as a result of the head acceleration event, determining a Neurologic Injury Measure (NIM) from the estimate of axon signal dysfunction, and generating a probability that the subject has been concussed by the head acceleration event based on the NIM. The estimate of axon signal dysfunction may be based on strain at nodes of Ranvier in the component of the subject's brain.

Abstract: A toy assembly that has an impact surface made from an array of taut strings. The hardness of the impact surface is a function of the tension present in the strings. The toy assembly has two plates that are spaced apart. The two plates are held apart by a post. One or more of the plates may be selectively adjustable in position along the post. A plurality of strings extends between the first plate and the second plate. Each of the strings is maintained in tension to create a resilient impact surface. The strings are maintained in tension by the use of spring clips and/or by adjusting the distance between the two plates.

Abstract: A system for and method for displaying content with spatial and temporal components at an electronic reader device is presented. The system and method comprise an acquisition module for receiving a plurality of electronic content from one or more content sources via a network, a storage module for storing the plurality of electronic content, a selection module for selecting at least some of the plurality of electronic content for presentation, and a presentation module for presenting the selected electronic content at the electronic reader device, wherein the presented electronic content comprises a spatially and temporally persistent component and a spatially persistent and temporally transient component.

Abstract: Systems and methods are disclosed for teaching a person how to perform a task within a computer program with at least one graphical user interface object. A script is formulated that contains step-by-step instructions indicating to a person how to perform a task within a computer program through interacting with at least one graphical user interface object of the computer program. The script is formulated by reference to an entity map, which contains programming instructions for accessing at least one graphical user interface object of the program to perform a step of the task. The script is executed by displaying a partial graphical overlay on top of an actual, non-simulated graphical user interface of the program. Each graphical user overlay instructs a user how to provide pertinent user input to graphical user interface objects of the computer program.