منابع مشابه
Detection of Long-Duration Narrowband Processes
In this paper we are concerned with the detection of quiet narrowband signals. More specifically, we assume that these signals are: 1) extremely weak, with a signal-to-noise ratio (SNR) of ¡20 dB or below on a per-sample basis, 2) moderately long, of the order of minutes or tens of minutes, and 3) narrowband but not tonal, with, for example, a bandwidth of a few tens of Hz at a sampling rate of...
متن کاملChanges in the perceived duration of a narrowband sound induced by a preceding stimulus.
The authors show that a narrowband noise (NBN) is perceived as longer when presented immediately after a wideband noise (WBN), compared to when the WBN is absent. This effect depended on the WBN's frequency spectrum overlapping that of the NBN, and it increased as the duration of the WBN increased up to 300 ms. It decreased when a silent gap was introduced between the WBN and NBN, but remained ...
متن کاملPC5-A-mediated processing of pro-neurotensin in early compartments of the regulated secretory pathway of PC5-transfected PC12 cells.
Among the members of the proprotein convertase (PC) family, PC1 and PC2 have well established roles as prohormone convertases. Another good candidate for this role is PC5-A that has been shown to be present in the regulated secretory pathway of certain neuroendocrine tissues, but evidence that it can process prohormones is lacking. To determine whether PC5-A could function as a prohormone conve...
متن کاملCerebrospinal Pulsation Hydrodynamics in a 2D Simulation of Brain Ventricles
In this article, dynamics of the cerebrospinal fluid (CSF) was studied, using computational fluid dynamics. Using MRI images of two special cases, a 2-dimensional model of the ventricular system was made. CSF velocity and pressure distribution in ventricular system have high importance since the flow pattern of this liquid has an important effect on intracranial pressure, i.e., ICP, which has a...
متن کاملSurround-induced foveal afterimage pulsation: Evidence for a long-range neural effect
We demonstrate that an afterimage resulting from a strong foveal light flash can be made to pulsate by luminance modulation of a surrounding annulus as far as 8 deg away. Afterimage pulsation persists even if all artifacts due to pupil size, stray light and simultaneous contrast are ruled out. This suggests an origin by a long-range neural process acting from the remote surround. The effect is ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2009
ISSN: 0148-0227
DOI: 10.1029/2007ja012660