  We study the spectrum of light baryons and hyperons as a function of
temperature using lattice gauge theory methods. We find that masses of positive
parity states are temperature independent, within errors, in the hadronic
phase. The negative parity states decrease in mass as the temperature
increases. Above the deconfining temperature, lattice correlators and spectral
functions show a degeneracy between parity sectors, i.e. parity doubling. We
apply our findings to an in-medium Hadron Resonance Gas model. The techniques
used in this study include direct analysis of the hadronic correlation
functions, conventional fitting procedures, and the Maximum Entropy Method.
