Method for the operation of a pulse detection device that comprises a decision device with an input and an output, wherein the decision device is designed, - to receive at its input digital signal values that represent a digitally converted pulse signal of an analog pulse signal - and to output a first output signal value at its output when the digital signal value present at the input is larger than a predetermined first threshold value (H_th), and to ouput a second output signal value at its output when the digital digitalsignal value present at the input is smaller than a predetermined second threshold value (L_th) which is smaller than the first threshold value (H_th) and the method is characterized in that it comprises the following steps: - during a predetermined segment time period in each case, a first set of values (M_Smax) with a predetermined first number (N_Emax) of the largest digital signal values and a second set of values (M_Smin) with a predetermined second number (N_Emin) of the smallest digital signal values are determined from the digital signal values received at the input, and - the first threshold value (H_th) is adjusted depending on the first set of values (M_Smax) and/or the second threshold value (L_th) is adjusted depending on the second set of values (M_Smin), wherein the first threshold value (H_th) and the second threshold value (L_th) are determined depending on a decision threshold value and on a predetermined hysteresis value, and the decision threshold value is determined depending on the digital signal values of the first set of values (M_Smax) and of the second set of values (M_Smin), and the hysteresis value is adjusted depending on a frequency determined for the analog pulse signal. - to receive at its input digital signal values that represent a digitally converted pulse signal of an analog pulse signal - and to output a first output signal value at its output when the digital signal value present at the input is larger than a predetermined first threshold value (H_th), and to ouput a second output signal value at its output when the digital digitalsignal value present at the input is smaller than a predetermined second threshold value (L_th) which is smaller than the first threshold value (H_th) - during a predetermined segment time period in each case, a first set of values (M_Smax) with a predetermined first number (N_Emax) of the largest digital signal values and a second set of values (M_Smin) with a predetermined second number (N_Emin) of the smallest digital signal values are determined from the digital signal values received at the input, and - the first threshold value (H_th) is adjusted depending on the first set of values (M_Smax) and/or the second threshold value (L_th) is adjusted depending on the second set of values (M_Smin), wherein the first threshold value (H_th) and the second threshold value (L_th) are determined depending on a decision threshold value and on a predetermined hysteresis value, and the decision threshold value is determined depending on the digital signal values of the first set of values (M_Smax) and of the second set of values (M_Smin), and the hysteresis value is adjusted depending on a frequency determined for the analog pulse signal.