9 5 8 , ▁but ▁transferred ▁to ▁the ▁University ▁of ▁Mun ich ▁after ▁Lor enz ▁and ▁fellow ▁ne uro eth ologist ▁Er ich ▁von ▁Hol st ▁established ▁the ▁Max ▁Plan ck ▁Institute ▁for ▁Be havior al ▁Phys i ology ▁in ▁a ▁city ▁approximately ▁ 2 0 ▁miles ▁from ▁Mun ich , ▁in ▁Se ew iesen ▁( B ul lock ▁et ▁al . ▁ 1 9 9 5 ). ▁ ▁Between ▁these ▁two ▁colleg es , ▁his ▁studies ▁were ▁spread ▁between ▁bot any , ▁zo ology , ▁physics , ▁and ▁mathematics , ▁whose ▁influence ▁is ▁clearly ▁seen ▁in ▁his ▁quant itative ▁approaches ▁in ▁later ▁research ▁towards ▁the ▁neural ▁bases ▁of ▁animal ▁behavior ▁( Z up anc ▁and ▁Bul lock ▁ 2 0 0 6 ). ▁ ▁It ▁was ▁here ▁that ▁his ▁eth ological ▁foundation ▁was ▁laid , ▁as ▁he ▁" per formed ▁a ▁quant itative ▁analysis ▁of ▁the ▁effect ▁of ▁motiv ational ▁factors ▁on ▁the ▁occurrence ▁of ▁various ▁social ▁behavior al ▁patterns " ▁through ▁his ▁doctor al ▁th esis , ▁" On ▁caus ation ▁of ▁Be havior al ▁Pattern s ▁in ▁Ch ic l id ▁Fish ," ▁which ▁was ▁completed ▁in ▁ 1 9 6 3 ▁under ▁Lor enz ▁and ▁Hans jo chem ▁Aut rum , ▁a ▁sens ory ▁phys i ologist ▁( C arr ▁ 1 9 9 4 ; ▁Z up anc ▁and ▁Bul lock ▁ 2 0 0 6 ). ▁ ▁Academ ic ▁career ▁His ▁research ▁continued ▁to ▁focus ▁on ▁the ▁motiv ational ▁behav iors ▁of ▁ch ic l id ▁fish