Abstract :
Abstract — In this paper, the electric resistivity (R) at
different temperatures (T) between 300 to 20 °K (°K for
Kelvin degree) in frog sciatic nerves was studied. In
particular, we study two cases: the case where the measure
equipment is placed inside the sciatic nerve and the case
where the measure equipment is placed outside the sciatic
nerve. When the electrical contacts were leaned just into the
nerve, an increase of the sciatic nerve resistivity is observed
in the interval: 240 °K < T < 300 °K, indicating a semiconductor
behavior. Then, once the sciatic nerve temperature
is driven below 240 °K, the resistivity decreases abruptly and
then at temperatures lower than 234 °K, it remains constant.
Thus, for the first time we report the existence of
superconductor-like behavior in sciatic nerve. For the second
time, we analyse and characterize the superconductor-like
behavior conductivity by wavelet transform. It is shown that,
according to the temperature interval, the sciatic nerve has a
semi-conductor behavior and superconductor-like behavior.
Furthermore, it is shown that between 250 °K and 240 °K,
the sciatic nerve resistance presents a response characterized
by a magnitude singularity. The new contribution of this
paper is in one hand the reporting of the existence of
superconductor-like behavior in sciatic nerves and in other
hand the precise characterization by the wavelet transform of
the impulse response of the sciatic nerve.
