What question did this study set out to answer?

This research investigates the membrane characteristics and electrical responses of the canine papillary muscle fiber under different stimulation conditions.

December 1, 1969The Journal of General PhysiologyOpen Access

Membrane Characteristics of the Canine Papillary Muscle Fiber

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YSYasuzi SakamotoFukuoka University

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Implication

Experimental study of membrane responses to stimulation in canine papillary muscle indicates significant differences in thresholds and latencies.

Key Points

This research investigates the membrane characteristics and electrical responses of the canine papillary muscle fiber under different stimulation conditions.
Used partition chamber method for extracellular polarization.
Measured time and spatial constants of electrotonic potentials.
Determined conduction velocity and membrane capacitance from action potential characteristics.
Electrotonic potential time constant was 3.3 msec, space constant 1.2 mm.
Action potential foot rose with a time constant of 1.1 msec and conduction velocity of 0.68 m/sec.
Responses to intracellular stimulation showed higher threshold and shorter latency compared to extracellular stimulation.

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Yasuzi Sakamoto (1969) studied this question.

synapsesocial.com/papers/6a154aec15658026c08226de https://doi.org/10.1085/jgp.54.6.765

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Implication

Experimental study of membrane responses to stimulation in canine papillary muscle indicates significant differences in thresholds and latencies.

Membrane Characteristics of the Canine Papillary Muscle Fiber

Discussion

Member takes

Implication

Key Points

Cite This Study

Membrane Characteristics of the Canine Papillary Muscle Fiber

Discussion

Member takes

Implication

Key Points

Cite This Study

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