The presentation concerns the evaluation of a temporal method for tracking cycle lengths in voiced speech. The speech cycles are detected via the saliences of the speech signal samples. The method does not request that the signal is locally periodic and the average period length known a priori. The cycle length extraction is applied to the analysis of dysphonic speakers affected by amyotrophic ...

Objective: Amyotrophic lateral sclerosis (ALS) is a rare disease, but is also one of the most common motor neuron diseases, and people of all races and ethnic backgrounds are affected. There is currently no cure. Brain computer interfaces (BCIs) can establish a communication channel directly between the brain and an external device by recognizing brain activities that reflect user intent. There...

The synapse from the lateral pyloric (LP) to the pyloric dilator (PD) neuron in the stomatogastric nervous system of the crab Cancer borealis has both a graded and a spike-mediated component. These two components have opposite short-term dynamics: the spikemediated component is usually facilitating, while the graded component is depressing. We built a model of these two synaptic components and ...

This paper presents a computational approach to extracting basic perceptual structure, or the lowest level grouping in dot patterns. The goal is to extract the perceptual segments of dots that group together because of their relative locations. The dots are interpreted as belonging to the interior or the border of a perceptual segment, or being along a perceived curve, or being isolated. To per...

The observational approach is based on direct path measurements of seabed reflection. The key advantages of this approach are: high resolution (0.1 m vertically, 1-10 m laterally); relatively modest uncertainties (due to short path lengths) from the space/time varying oceanography and biology; and that low source levels are possible. The main challenge is that water depth, 20 m, is 4 times smal...

Patient dose reduction in C-arm computed tomography by volume-of-interest (VOI) imaging is becoming an interesting topic for many clinical applications. One limitation of VOI imaging that remains is the truncation artifact in the reconstructed 3-D volume. This artifact can either be a cupping effect towards the boundaries of the field-of-view (FOV) or an offset in the Hounsfield values of the r...

Atmospheric inputs to the ocean of dust originating from Africa are compared with downward dust flux in the oceanic water column. Atmospheric fluxes were estimated using remote-sensing-derived dust optical thickness and parameters from a transport/deposition model (TM2z). Oceanic fluxes were measured directly over/in two regions of contrasting primary productivity of the northeastern tropical A...

In this paper, we consider competitive neural networks with lateral inhibitory feedback. In the feline LGN, lateral inhibition is known to modulate the gain of NMDA-mediated excitation. We formulate a population model for this behaviour in which the excitatory gain of each neuron is modulated as a function of the ratio between current activity and an inhibitory feedback signal. This arrangement...