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Keywords: electrocardiogram
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Journal Articles
J Exp Biol (2020) 223 (22): jeb225730.
Published: 16 November 2020
... (5H fish), on in vivo and spontaneous heart rate ( f H ), electrocardiogram, ventricular action potential (AP) shape and duration (APD), the background inward rectifier ( I K1 ) and rapid delayed rectifier ( I Kr ) K + currents and ventricular gene expression of proteins involved in excitation...
Journal Articles
J Exp Biol (2020) 223 (12): jeb225227.
Published: 25 June 2020
... exposed to acute warming while electrocardiograms were recorded. From 12°C to 25.3°C, electrical excitation between different parts of the heart was coordinated, but above 25.3°C, atrial and ventricular beating rates became partly dissociated because of 2:1 atrioventricular (AV) block. With further...
Journal Articles
J Exp Biol (2018) 221 (4): jeb174508.
Published: 22 February 2018
...Amanda D. V. MacCannell; Ethan C. Jackson; Katherine E. Mathers; James F. Staples ABSTRACT We used electrocardiogram (ECG) telemeters to measure the heart rate of hibernating Ictidomys tridecemlineatus (thirteen-lined ground squirrel). An increase in heart rate from 2.2 to 5 beats min –1 accurately...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (10): 1495–1504.
Published: 15 May 2016
... temperature changes, thermal sensitivity of cardiac excitation in a eurythermal teleost, the roach ( Rutilus rutilus ), was examined. Excitability of the heart was determined from in vivo electrocardiograms and in vitro microelectrode recordings of action potentials (APs) from winter and summer roach...
Journal Articles
J Exp Biol (2014) 217 (9): 1525–1534.
Published: 01 May 2014
... seals) regulate heart rate ( f H ) while diving. We investigated dive f H in five adult female California sea lions ( Zalophus californianus ) during foraging trips by instrumenting them with digital electrocardiogram (ECG) loggers and time depth recorders. In all dives, dive f H (number of beats...
Journal Articles
J Exp Biol (2014) 217 (2): 299–309.
Published: 15 January 2014
...Matti Vornanen; Jaakko Haverinen; Stuart Egginton The upper thermal tolerance and mechanisms of heat-induced cardiac failure in the brown trout ( Salmo trutta fario ) was examined. The point above which ion channel function and sinoatrial contractility in vitro , and electrocardiogram (ECG) in vivo...
Includes: Supplementary data
Journal Articles
J Exp Biol (2004) 207 (11): 1969–1976.
Published: 01 May 2004
...H. A. Campbell; E. W. Taylor; S. Egginton SUMMARY Anaesthesia and minor surgery to place electrocardiogram recording electrodes in the short-horned sculpin caused a decrease in mean normal beat(R–R) interval and heart rate variability (HRV), measured as the standard deviation in the R–R interval...
Journal Articles
J Exp Biol (2002) 205 (13): 1843–1851.
Published: 01 July 2002
... from the apex towards the base (near where the cog-wheel valve muscle is located) at a velocity of 91±23 cm s -1 (mean ± S.E.M., N =3). The cog-wheel valve electrocardiogram (ECG) (and thus contraction of the valve) trailed the right ventricular ECG by 248±28 ms ( N =3), which was equivalent to 6-35...