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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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