Citation Context

...imal embedding dimension. As for time lag τ, a method based on autocorrelation function is used to find optimal values (largest one so that the resulting coordinates for m are relatively independent) =-=[12]-=-. Detrended fluctuation analysis Detrended fluctuation analysis is a method for determining the statistical selfaffinity of a signal. It unmasks long-memory processes (revealing the extent of long-ran...

Citation Context

...pt ` τpm ´ 1qqs, (1) in general (Figure 2 Right). Apart from T ‰ 35 ˝ C, their periods are relatively stable. The slight variation of these periods could be the consequence of junction-gap remodeling =-=[14]-=-. From 37 ˝ C to 30 ˝ C, the period is increased from about 0.5 s to 1.58 s. Two period values are shown at 35 ˝ C : the lower value is almost exactly the same as the one at 37 ˝ C, higher value is ro...

Citation Context

... Detrended fluctuation analysis is a method for determining the statistical selfaffinity of a signal. It unmasks long-memory processes (revealing the extent of long-range correlations) in time series =-=[13]-=-. It is more robust and less prone to artefacts than a simple period analysis. A time series xptq has N samples. It is firstly integrated, then the obtained new time series yptq is divided into boxes ...

Citation Context

...ild therapeutic hypothermia (MTH) : put the patient under 34 ˝C „ 32 ˝C during 12 ´ 24 hours [2–4]. In fact, the use of therapeutic hypothermia following cardiac arrest was reported in the late 1950s =-=[5, 6]-=-. The results showed some benefits but uncertain. It was also clinically difficult to control the interval between arrest and cooling which is very important. Therefore, hypothermia for cardiac arrest...

Citation Context

...system states and is a function of τ and m, xptq is the time series (t “ 0, 1, 2, . . .), m is the embedding dimension and τ is the time lag. m is estimated by the method False Nearest Neighbor (FNN) =-=[11]-=-, which intends to find the minimal embedding dimension. As for time lag τ, a method based on autocorrelation function is used to find optimal values (largest one so that the resulting coordinates for...

Citation Context

...arrest. Even though that MTH has been shown to increase the hospital survival rate, it has many adverse effects, among which the cardiac arrhythmia generation represents an important part (up to 34%) =-=[7, 8]-=-. Cardiac culture in vitro provides a better spatial resolution (down to cellular level) than studies in vivo, which could bring some insights of the mechanism of post-hypothermia arrhythmia (PHA) gen...

Citation Context

...new-born rat (1 „ 4 days) directly on a multi-electrodes array (MEA), a system allowing real-time recording the extracellular field potential (EFP) of the CM culture, (details of culture preparing in =-=[9]-=-). The CM cultures have the potential to reproduce in vitro a wide range of pathological conditions such as ischemia reperfusion, the radical stress or thermal shock, and any combination of these cond...

Citation Context

...ild therapeutic hypothermia (MTH) : put the patient under 34 ˝C „ 32 ˝C during 12 ´ 24 hours [2–4]. In fact, the use of therapeutic hypothermia following cardiac arrest was reported in the late 1950s =-=[5, 6]-=-. The results showed some benefits but uncertain. It was also clinically difficult to control the interval between arrest and cooling which is very important. Therefore, hypothermia for cardiac arrest...

Citation Context

...arrest. Even though that MTH has been shown to increase the hospital survival rate, it has many adverse effects, among which the cardiac arrhythmia generation represents an important part (up to 34%) =-=[7, 8]-=-. Cardiac culture in vitro provides a better spatial resolution (down to cellular level) than studies in vivo, which could bring some insights of the mechanism of post-hypothermia arrhythmia (PHA) gen...