scholarly journals Calcium ion spiral wave induced by random calcium ion sparks in single heart cell

2012 ◽  
Vol 61 (15) ◽  
pp. 158203
Author(s):  
Bai Yong-Qiang ◽  
Zhu Xing
Keyword(s):  
Calcium Ion ◽  
Spiral Wave ◽  
Heart Cell ◽  
Single Heart Cell ◽  
Wave Induced

CHARACTERIZATION OF SINGLE HEART CELL CONTRACTILITY BY RAPID IMAGING

1989 ◽  
Vol 16 (3) ◽  
pp. 179-184 ◽  
Author(s):  
Leanne M. Delbridge ◽  
Peter J. Harris ◽  
Trefor O. Morgan
Keyword(s):  
Heart Cell ◽  
Rapid Imaging ◽  
Cell Contractility ◽  
Single Heart Cell

SPIRAL DYNAMICS IN EXCITABLE MEDIUM INDUCED BY EXTERNAL PERIODIC MODULATION

2013 ◽  
Vol 23 (05) ◽  
pp. 1350082
Author(s):  
YU QIAN ◽  
WEI LI ◽  
XIAODONG HUANG ◽  
ZHAOYANG ZHANG ◽  
YUANYUAN MI
Keyword(s):  
Spiral Wave ◽  
Spatiotemporal Dynamics ◽  
Excitable Medium ◽  
Periodic Modulation ◽  
Spiral Dynamics ◽  
External Modulation ◽  
Wave Induced ◽  
Size Variable

Spatiotemporal dynamics of spiral tip and the evolution of spiral wave induced by external periodic modulation has been investigated in a generic excitable model. Tip dynamics of spiral wave depending on the frequency and strength of the external modulation is revealed by the meandering size variable Rx of the tip trajectory. Different effects of frequency and strength on spiral dynamics are observed and the corresponding mechanisms are explained. Finally, we can eliminate spiral wave out of the boundary successfully by suitably choosing the frequency and the strength of the external periodic modulation.

The bee venom apamin, decreases Isi and increases K+ current in single heart cell

1987 ◽  
Vol 19 ◽  
pp. S41-S41
Author(s):  
G BKAILY ◽  
M BENABDERRAZIK ◽  
Y YAMAMOTO ◽  
D JACQUES ◽  
A SCULPTOREANU ◽  
...  
Keyword(s):  
Bee Venom ◽  
Heart Cell ◽  
K Current ◽  
Single Heart Cell

Emergence of spiral wave induced by defects block

2013 ◽  
Vol 18 (7) ◽  
pp. 1665-1675 ◽  
Author(s):  
Jun Ma ◽  
Qirui Liu ◽  
Heping Ying ◽  
Ying Wu
Keyword(s):  
Spiral Wave ◽  
Wave Induced

TRANSITION OF ORDERED WAVES IN NEURONAL NETWORK INDUCED BY DIFFUSIVE POISONING OF ION CHANNELS

2013 ◽  
Vol 21 (01) ◽  
pp. 1350002 ◽  
Author(s):  
LONG HUANG ◽  
JUN MA ◽  
JUN TANG ◽  
FAN LI
Keyword(s):  
Ion Channels ◽  
Spiral Wave ◽  
Spiral Waves ◽  
Channel Noise ◽  
Channel Blocking ◽  
Adjacent Site ◽  
Line Defects ◽  
Ion Channel Blocking ◽  
Wave Induced ◽  
Target Wave

Normal physiological activities are often affected by some drugs, and some ion channels are blocked due to the katogene of drugs. This paper investigates the propagation of ordered waves in neuronal networks induced by diffusive poisoning, where the process is measured by increasing the number of neurons in the poisoned area of the networks. A coefficient of poisoning K is defined to measure the time units from one poisoned site to the adjacent site, a smaller K means that more neurons are poisoned in a certain period (a higher poisoning speed). A statistical factor of synchronization R in the two-dimensional array is defined to detect the transition of spiral waves induced by ion channel blocking. It is confirmed that the evolution of the spiral waves depends on the coefficient of poisoning K and number of poisoned neurons. Furthermore, breakup of the spirals is observed when weak channel noise is considered. Finally, the formation of the spiral wave induced by blocking the target wave with line defects is briefly discussed.

Spiral wave of a two-layer coupling neuronal network with multi-area channels

2019 ◽  
Vol 33 (29) ◽  
pp. 1950354
Author(s):  
Yong Wu ◽  
Bing Wang ◽  
Xiaoxiao Zhang ◽  
Hao Chen
Keyword(s):  
External Force ◽  
Neuronal Network ◽  
Spiral Wave ◽  
Spiral Waves ◽  
Spatiotemporal Pattern ◽  
Wave Dynamics ◽  
Hr Model ◽  
Local Coupling ◽  
Wave Induced

Using the Hindmarsh–Rose (HR) model, a two-layer neuronal network is constructed to study the spiral wave dynamics. The first layer generates spiral wave induced by random values of boundary under appropriate coupling intensity and external force, and the second layer is in the different states. Coupling channels between the two layers are set in multiple areas and spiral wave of first layer affect second layer via the coupling channels. The spatiotemporal pattern of neuronal network is investigated in the second layer. It is shown that spiral wave can be found under appropriate conditions, multi-area channels are more likely to generate spiral waves and target waves than only one local coupling area. A statistical variable on the second layer is calculated by increasing intensity of channels between layers. The larger the coupling areas between layers, the more obvious the synchronism phenomenon is.

Bay K 8644 induce enhancement of K+ current in both single heart cell and smooth muscle cell

1989 ◽  
Vol 80 (1-2) ◽  
Author(s):  
J-F Renaud ◽  
G. Bkaily ◽  
M. Benabderrazik ◽  
D. Jacques ◽  
N. Sperelakis
Keyword(s):  
Smooth Muscle ◽  
Smooth Muscle Cell ◽  
Muscle Cell ◽  
Bay K 8644 ◽  
Heart Cell ◽  
K Current ◽  
Single Heart Cell

Deformation and death of spiral wave induced by asymmetrical diffusion in elastic media

2010 ◽  
Vol 15 (12) ◽  
pp. 3913-3918 ◽  
Author(s):  
Chun-Ni Wang ◽  
Li-Jian Yang ◽  
Li-Hua Yuan ◽  
Jun Ma
Keyword(s):  
Spiral Wave ◽  
Elastic Media ◽  
Wave Induced
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