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Keywords: Activation
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Journal Articles
Journal Articles
Journal Articles
J Exp Biol (2020) 223 (23): jeb228882.
Published: 7 December 2020
...Vladimir A. Vityazev; Jan E. Azarov ABSTRACT The activation sequence of the ventricular myocardium in ectotherms is a matter of debate. We studied the correlation between the ventricular activation sequence and the pattern of local stretches in 13 toads ( Bufo bufo ). Epicardial potential mapping...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (21): jeb187260.
Published: 5 November 2018
... the nature of the relationship between the distribution of activation and the distribution of force-generating capacity among the three heads of the triceps surae [soleus (SOL), gastrocnemius medialis (GM) and gastrocnemius lateralis (GL)]. Twenty volunteers performed isometric plantarflexions, during which...
Journal Articles
J Exp Biol (2014) 217 (19): 3528–3534.
Published: 1 October 2014
...Ollie M. Blake; James M. Wakeling Animals produce rapid movements using fast cyclical muscle contractions. These types of movements are better suited to faster muscle fibres within muscles of mixed fibre types as they can shorten at faster velocities and achieve higher activation–deactivation rates...
Journal Articles
Journal Articles
J Exp Biol (2012) 215 (5): 723–730.
Published: 1 March 2012
...M. Rockwell Parker; Robert T. Mason SUMMARY Vertebrates indicate their genetic sex to conspecifics using secondary sexual signals, and signal expression is often activated by sex hormones. Among vertebrate signaling modalities, the least is known about how hormones influence chemical signaling. Our...
Journal Articles
J Exp Biol (2012) 215 (2): 324–330.
Published: 15 January 2012
... (V/V max ) of skeletal muscle during cyclical contractions: length–force effects and velocity-dependent activation and deactivation . J. Exp. Biol. 201 , 1527 - 1540 . Askew G. N. , Marsh R. L. ( 2001 ). The mechanical power output of the pectoralis muscle of the blue-breasted...
Journal Articles
Journal Articles
J Exp Biol (2006) 209 (12): 2276–2292.
Published: 15 June 2006
... in adaptation by domains of cytoplasm along a myofibre; serve researchers, through a marker role, as `clues' to various activities of muscle; are `connectors' that physically, and through signalling and cell-fibre communications, bridge myofibres to the intra- and extra-muscular environment; and are equipped...
Journal Articles
J Exp Biol (2005) 208 (24): 4747–4756.
Published: 15 December 2005
... (0.5 mmol l –1 ), but not affected by internal GDPβS (1 mmol l -1 ). The voltage of half-maximum ( V 1/2 )activation was –46 mV in both perforated and conventional modes. V 1/2 of inactivation was –80 mV in perforated mode and –86 mV in conventional mode. Internal GTPγS (0.5 mmol l –1 ) shifted the V 1...
Journal Articles
J Exp Biol (2005) 208 (16): 3055–3063.
Published: 15 August 2005
... in the half-inactivation and a negative shift in the half-activation potentials for the sodium current, accompanied by a slowing of the rate of inactivation to half of the experimentally observed values. This suggests that once-only spiking can be attributed to the steady-state values of activation...
Journal Articles
J Exp Biol (2001) 204 (24): 4249–4257.
Published: 15 December 2001
... was predicted. Subsequent experiments revealed that bass rostral white muscle showed faster rates of activation and relaxation than more caudal muscle, as has been observed in white muscle of other fish species. Rostral–caudal variations in white muscle protein composition and contractile properties...
Journal Articles
Journal Articles
J Exp Biol (1997) 200 (22): 2919–2926.
Published: 1 November 1997
... charges in this segment. Despite their charge differences, both these jellyfish channels produce currents with activation and inactivation curves shifted by approximately +40 mV relative to other Shaker currents. Adding charge without changing segment length by mutating the N-terminal side of jShak1 S4...
Journal Articles
J Exp Biol (1997) 200 (3): 495–501.
Published: 1 January 1997
...F. Lou; N. A. Curtin; R. C. Woledge ABSTRACT The energetic cost of activation was measured during an isometric tetanus of white muscle fibres from the dogfish Scyliorhinus canicula . The total heat production by the fibres was taken as a measure of the total energetic cost. This energy consists...
Journal Articles
J Exp Biol (1996) 199 (6): 1261–1267.
Published: 1 June 1996
...Alberto Salleo; Giovanni Musci; Paolo F. A. Barra; Lilia Calabrese ABSTRACT The events which trigger the activation of nematocytes are still poorly understood, and no evidence has been presented so far on either the nature of the activatory signal for the nematocyte or the transduction mechanism...