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Spectral analysis of cardiac rhythm in fishes



Spectral analysis of cardiac rhythm in fishes



Zhurnal Evolyutsionnoi Biokhimii i Fiziologii 23(4): 497-501



Spectral analysis of rhythmograms in the cod Gadus morhua callarias, plaice Pleuronectes platessa, herring Clupea harengus membras and trout Salmo gairdneri revealed complex wave structure of their cardiac rhythm. In all the species investigated, slow (0.01-0.06 Hz), intermediate (0.06-0.25 Hz) and fast (0.25-0.5 Hz) waves were recorded. It is suggested that the wave structure of cardiac rhythm reflects rather complicated relationships between functional systems regulating cardiac activity.

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