QUANTUM APPLIED SCIENCE & RESEARCH, INC. Patent applications |
Patent application number | Title | Published |
20090112080 | System for Measuring Electric Signals - A system for determining if signals present at bioelectric sensors derive from an intended source or from different, localized sources or artifacts includes a first sensor placed to detect the electric potential of interest and generate a first electric signal possibly representative of the electric potential of interest and a second sensor placed near the first sensor and preferably a relatively large distance away from the source. The second sensor detects the electrical potential of interest and generates a second electrical signal which also possibly represents the electrical potential of interest. An electronic circuit determines whether a difference between the electrical signals exceeds a certain threshold, thus indicating that either one or both of the signals is a measure of an artifact and not the electric potential of interest. | 04-30-2009 |
20090088619 | Self-Locating Sensor Mounting Apparatus - A self-locating mounting apparatus for holding objects such as sensors at specific positions on a subject's head includes a central mount constituted by a plurality of inextensible elements adapted to fit over the top of a subject's head. In addition, the mounting apparatus includes an adjustable circumferential band adapted to circle the subject's head and connect the central mount to inextensible side elements via sliding joints. A plurality of biasing elements provide a force for biasing sensor mounting units on the mounting apparatus against a subject's head, allowing for long-term sensing while minimizing interference forces on the mounting units. Advantageously, the mounting apparatus holds sensors within approximately 5 mm of their desired measurement positions over a range of subject head sizes. | 04-02-2009 |