Here's what rhymes with pulsations.

Consider these alternatives

oscillations / relations photosphere / will peregrinations / relations precipitations / relations inhomogeneities / deities depletions / reasons striations / relations condensations / relations accretion / completion bacteremia / anemia hemolysis / autohemolysis occultations / relations luminosity / voluminosity deformations / relations phenotypes / types misreadings / proceedings declinations / relations hemorrhages / haemorrhages oscillatory / story inundations / relations bleedings / proceedings