BACKGROUND In the perioperative period, it may be inappropriate to monitor vital signs during endotracheal intubation using the same interval as during a hemodynamically stable period. The aim of the present study was to determine whether it is appropriate to use the same intervals used during the endotracheal intubation and stable periods to monitor vital signs of patients under general anesth...

The paper presents a discussion of parameterized discrete dynamics of neural ring networks. For specific parameter domains stable periodic orbits coexist. Their periods and the number of orbits of a given period are determined. Even n-rings, i.e. rings with an even number of inhibitory connections, exhibit mainly stable period-n orbits. Odd n-rings display mainly stable period-2n orbits. The dy...

We characterize the structure of the periods of a neuronal recurrence equation. Firstly, we give a characterization of k-chains in 0-1 periodic sequences. Secondly, we characterize the periods of all cycles of some neuronal recurrence equation. Thirdly, we explain how these results can be used to deduce the existence of the generalized period-halving bifurcation.

We obtain quantitative estimates of unique continuation for solutions to parabolic equations: doubling properties and two-sphere one-cylinder inequalities.

The mechanism underlying the reaction time (RT2) slowing to the 2nd of 2 successively presented stimuli (S1 and S2) in the psychological refractory period paradigm was investigated. Stimulus onset synchrony (SOA) between S1 and S2, contrast of S2, and Task 2 set-level compatibility was manipulated. Specifically, the authors used a psychophysiological approach to examine RT2 slowing in trials in...

Semantic ambiguity can occur either as a consequence of ambiguity between unrelated meanings (e.g. bank) or ambiguity between related senses (e.g. hook). Early research did not distinguish between the two, finding that ambiguous words were recognized faster than unambiguous words. More recently it has been shown that words with many meanings suffer from a disadvantage in terms of recognition ti...

Mitochondria are major suppliers of cellular energy through nutrients oxidation. Little is known about the mechanisms that enable mitochondria to cope with changes in nutrient supply and energy demand that naturally occur throughout the day. To address this question, we applied MS-based quantitative proteomics on isolated mitochondria from mice killed throughout the day and identified extensive...

This study investigates on a quantitative basis two strategies that can be used to increase the legibility distance of retroreflective traffic signs with negative luminance contrast legend or symbols at night. The first strategy involves the increase of the letter, numeral, or symbol size associated with a corresponding increase in the stroke width (representing the visual detail) and with an i...

People simply cannot do two things at once, as shown by research on the so-called psychological refractory period. A new neuroimaging study has now localized the response-selection bottleneck underlying the psychological refractory period to a frontoparietal network.

Let T : [0, 1] → [0, 1] be the doubling map and let 0 < a < b < 1. We say that an integer n ≥ 3 is bad for (a, b) if all n-cycles for T intersect (a, b). Let B(a, b) denote the set of all n which are bad for (a, b). In this paper we completely describe the sets: D2 = {(a, b) : B(a, b) is finite} and D3 = {(a, b) : B(a, b) = ∅}. In particular, we show that if b − a < 1 6 , then (a, b) ∈ D2, and ...