Temperature dependence of electric activity of wasp heart

Changes in the temporal structure and amplitude of electrical fluctuations connected with the heart function were revealed by the electrophysiological method. Fn the range of optimum temperatures, high-and low-amplitude impulses are predominantly generated. Their amplitudes differ approximately by a factor of three. Hypo-and hyperthermia stimulate pauses in heart function. Their duration increases with the unfavorable effect of temperature. During the activation of heart function, high-amplitude fluctuations are predominantly generated. In cold torpor, all forms of electric activity stop, whereas in the active state they are resumed.