Effects of hypoxia on passive electrical properties of canine ventricular muscle

1982 ◽  
Vol 393 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Kazuo Ikeda ◽  
Masayasu Hiraoka
Keyword(s):  
Electrical Properties ◽  
Ventricular Muscle ◽  
Passive Electrical Properties

The effect of repetitive stimulation on the passive electrical properties of the presynaptic terminal of the squid giant synapse

1979 ◽  
Vol 206 (1164) ◽  
pp. 293-306 ◽  
Keyword(s):  
Electrical Properties ◽  
Transmitter Release ◽  
Sea Water ◽  
Presynaptic Terminal ◽  
Repetitive Stimulation ◽  
Constant Current ◽  
Current Pulses ◽  
Squid Giant Synapse ◽  
Giant Synapse ◽  
Passive Electrical Properties

The resting electrical properties of the presynaptic terminal of the squid giant synapse have been determined by using constant current pulses. After short periods of repetitive stimulation, the terminal resistance, time constant and capacitance are found to be increased. These changes are absent in terminals bathed in artificial sea water containing no calcium, and sea water containing 5 mM cobalt. It seems likely that these changes are associated with transmitter release.

Current Source Design for Electrical Bioimpedance Spectroscopy

2008 ◽  
pp. 359-367 ◽  
Author(s):  
Fernando Seoane ◽  
Ramón Bragos ◽  
Kaj Lindecrantz ◽  
Pere Riu
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Biological Tissue ◽  
Electrical Impedance ◽  
Current Source ◽  
Electrical Impedance Spectroscopy ◽  
Bioimpedance Spectroscopy ◽  
Electrical Bioimpedance ◽  
Electronic Instrumentation ◽  
Passive Electrical Properties

The passive electrical properties of biological tissue have been studied since the 1920s, and with time, the use of Electrical Bioimpedance (EBI) in medicine has successfully spread (Schwan, 1999). Since the electrical properties of tissue are frequency-dependent (Schwan, 1957), observations of the bioimpedance spectrum have created the discipline of Electrical Impedance Spectroscopy (EIS), a discipline that has experienced a development closely related to the progress of electronic instrumentation and the dissemination of EBI technology through medicine.

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