After unilateral stroke, the dorsal premotor cortex (PMd) in the intact hemisphere is often more active during movement of an affected limb. Whether this contributes to motor recovery is unclear. Functional magnetic resonance imaging (fMRI) was used to investigate short-term reorganization in right PMd after transcranial magnetic stimulation (TMS) disrupted the dominant left PMd, which is speci...

We study a modified DBP algorithm that accounts for PMD. Based on the accumulated PMD at the receiver, the algorithm distributively compensates for PMD in the reverse propagation and outperforms the conventional approach by up to 2.1 dB.

Lateralization of higher brain functions requires that a dominant hemisphere collects relevant information from both sides. The right dorsal premotor cortex (PMd), particularly implicated in visuomotor transformations, was hypothesized to be optimally located to converge visuospatial information from both hemispheres for goal-directed movement. This was assessed by probabilistic tractography an...

BACKGROUND The rapid adaptation of actions to changes in the environment is crucial for survival. We previously demonstrated a joint contribution of left dorsal premotor cortex (PMd) and left supramarginal gyrus (SMG) to action reprogramming. However, we did not probe the contribution of PMd to the speed and accuracy of action reprogramming and how the functional relevance of PMd changes in the...

UNLABELLED Background- Power motion-mode transcranial Doppler (TCD) (PMD) is a new, multigated technique that may simplify and enhance detection of embolus. We developed criteria for emboli detection using PMD. Then, we performed a blinded comparison of transcranial PMD with single-gate spectral TCD in TCD bubble study patients. METHODS Patients with right-to-left shunt as detected with stand...

In current high bit rate long haul transmission systems, PMD is the most important factor causing degradation in system performance. Therefore PMD compensation is an important subject for reliable high bit rate transmission systems. PMD compensation techniques require information about effects of environmental conditions on PMD. In this paper, effects of temperature on PMD performance of G.652 ...

Recently, Kyriakos et al. proposed a Partially Materialized Digest scheme (PMD). Their scheme uses separate indexes for the data and the verification information to realize the authenticity and completeness verification in outsourced database. In this paper, we analyze PMD and show the drawbacks in PMD such as the slow update, the collusion and forgery attacks, and no content access control etc...

We study two models for the generation of polarization-mode dispersion (PMD) with unequal, fixed-length sections: an isotropic model, in which the orientations of all the sectional PMD vectors are taken to be randomly and uniformly varying across the Poincaré sphere, and a rotator model, in which all sections are taken to be linearly birefringent waveplates randomly rotatable with respect to on...

We developed and tested the clinimetric properties of a scale for psychogenic movement disorders (PMDs). PMDs are disabling but lack any generally accepted treatment strategies. To develop treatments, means of assessing disease severity must be provided. No scale to assess PMDs existed. The PMD scale developed here rates 10 phenomena (rest tremor, action tremor, dystonia, chorea, bradykinesia, ...

An adaptive polarization mode dispersion (PMD) compensation experiment is reported in a 40-Gb/s phase shaped binary transmission (PSBT) communication system, with the use of a new digital signal processor (DSP)-based optical PMD compensator. PMD tolerance is found to be enhanced by 8 ps after PMD compensation with 1-dB optical signal-to-noise ratio (OSNR) penalty. Under the condition of fast ch...