. ▁ ▁If ▁a ▁mate ▁is ▁not ▁available , ▁there ▁are ▁other ▁ways ▁to ▁rel ieve ▁the ▁effects ▁of ▁the ▁pon ▁far r , ▁including ▁med itation , ▁violence , ▁In fection , ▁" sh ock ", ▁and ▁simulation . ▁ ▁Other ▁characteristics ▁V ul c ans ▁are ▁typically ▁dep icted ▁as ▁stronger , ▁faster , ▁and ▁longer - l ived ▁than ▁humans . ▁There ▁are ▁instances ▁of ▁them ▁living ▁over ▁two ▁hundred ▁and ▁twenty ▁years . ▁Having ▁evol ved ▁on ▁a ▁desert ▁world , ▁V ul c ans ▁can ▁surv ive ▁without ▁water ▁for ▁longer ▁periods ▁than ▁humans . ▁V ul c ans ▁can ▁also ▁go ▁without ▁sleep ▁for ▁as ▁long ▁as ▁two ▁weeks . ▁ ▁Psych ology ▁ ▁Em otion ▁V ul c ans ▁are ▁known ▁as ▁logical ▁be ings ▁who ▁have ▁removed ▁emot ions ▁from ▁their ▁daily ▁lives . ▁The ▁V ul can ▁character , ▁Spo ck , ▁strugg les ▁with ▁this ▁throughout ▁the ▁original ▁series ▁as ▁he ▁is ▁half - human . ▁T ' Pol ▁states ▁that ▁par ano ia ▁and ▁hom ic idal ▁ra ge ▁were ▁common ▁on ▁V ul can ▁before ▁the ▁ad option ▁of ▁Sur ak ' s ▁code ▁of ▁emot ional ▁control . ▁ ▁Not ▁all ▁V ul can ▁characters ▁follow ▁the ▁path ▁of ▁pure ▁logic ; ▁some ▁instead ▁choose ▁to ▁em brace ▁emot ions . ▁A ▁group ▁of ▁ren eg ade ▁V ul c ans ▁who ▁believed ▁in ▁this ▁was ▁encountered ▁in ▁the ▁Star ▁Tre k : ▁Enter prise ▁episode ▁" F usion ",