James M. Masciotti

TL;DR: A novel digital lock-in detection technique for simultaneously measuring the amplitude and phase of multiple amplitude-modulated signals and can be performed as a simple matrix multiplication, which considerably reduces the computation time.

TL;DR: In this paper, an amplitude-modulated analog signal containing tomographic information, the analog signal having a modulation frequency, f λi, is converted into a digital signal at a sampling frequency f s, to produce a number of samples, K. The signal amplitude is computed based on the filtered in-phase signal component and the filtered quadrature signal component, the signal amplitude being representative of the tomography information.

TL;DR: First experiments on tissue phantoms show that dynamic behavior is accurately captured and spatial location can be correctly tracked using this dynamic optical tomography system.

TL;DR: The results suggest that the decrease in CB that occurs during normal aging is involved in age‐related hippocampal metabolic decline, and the value of using multiple MRI techniques in transgenic mice to investigate mechanisms involved in the functional and structural changes that occur during aging is illustrated.

TL;DR: In this paper, a unique manipulation of an ordinary averaging filter optimized for sources discrimination and the consequent sampling constraints is presented as a novel filtering scheme for the lock-in detection.