Psychophysical experiments on the precedence effect (PE) in cats have shown that they localize pairs of auditory stimuli presented from different locations in space based on the spatial position of the stimuli and the interstimulus delay (ISD) between the stimuli in a manner similar to humans. Cats exhibit localization dominance for pairs of transient stimuli with |ISDs| from approximately 0.4 ...

Cutaneous sensory thresholds were measured at the index fingertipof eight normal subjects. Electric shocks were applied with the finger at rest or tracking a target, which oscillated at one of three frequencies. For each subject, the sensory threshold was positively correlated with the frequency of oscillation. The correlations between sensory suppression and speed of movement agree with previo...

Potelunas, Meixner and Hardy (1) suggested the possibility that the pain threshold was not uniform in all areas of the body when they found wide variation in such thresholds in normal and pathological skin. Bishop (2) reported that the number, distribution and accessibility of the sensory receptors of the skin varied in different areas. The cutaneous sensory threshold was shown by the author (3...

We discuss the threshold activated extremal dynamics that is prevalent in the breakdown processes in heterogeneous materials. We model such systems by an elastic spring network with random breaking thresholds assigned to the springs. Results are obtained from molecular dynamics simulation of the system under constant stress and constant strain conditions. We find that the distribution P (m) of ...

Abstract: The distribution of the magnitudes of damage avalanches during a failure process typically follows a power law. When these avalanches are recorded close to the point at which the system fails catastrophically, we find that the power law has an exponent which differs from the one characterizing the size distribution of all avalanches. We demonstrate this analytically for bundles of man...

The goal of this exploratory study is to investigate the effect of working memory capacity on L2 oral fluency in 79 learners of English as a foreign language. Three tasks were used as measures of working memory (the reading span task, letter span task and an attention-switching task). Twelve measures of fluency were used spanning across speed, breakdown and repair fluency. Positive correlations...

Transparent ocular tissues, such as the cornea and crystalline lens, can be ablated or dissected using short-pulse lasers. In refractive and cataract surgeries, the cornea, lens, and lens capsule can be cut by producing dielectric breakdown in the focus of a near-infrared (IR) femtosecond laser, which results in explosive vaporization of the interstitial water, causing mechanical rupture of the...

Relatively little experimental and theoretical data exist on the retinal hazards of ultrashort laser pulses operating in the visible and near infrared spectral regions. Because of potential nonlinear effects that can occur from high-peak irradiance, ultrashort laser pulses propagate from the cornea to the retina, we have developed four projects within our Ultrashort Pulse Effects program. First...

A gravitational scenario is proposed where the euclidean action is invariant under the isotropic and homogeneous version of the euclidean U(1) group of local transformations of the scale factor and scalar matter field, interpreting the trace of the second fundamental form as the gauge field. The model allows spontaneous breakdown of some involved symmetries, including possibly diffeomorphism in...