, ▁then ▁to ▁the ▁position ▁of ▁full ▁professor ▁of ▁behavior al ▁phys i ology ▁in ▁ 1 9 7 7 ▁followed ▁his ▁decision ▁to ▁decl ine ▁the ▁position ▁of ▁Director ▁at ▁the ▁Max ▁Plan ck ▁Institute ▁for ▁Be havior al ▁Phys i ology ▁in ▁Se ew iesen ▁( Aut rum ▁ 1 9 9 4 ). ▁ ▁His ▁work ▁at ▁U C SD ▁led ▁him ▁to ▁publish ▁widely ▁about ▁the ▁neural ▁bases ▁of ▁the ▁jam ming ▁avoid ance ▁response , ▁the ▁first ▁verte br ate ▁example ▁of ▁an ▁entire ▁behavior al ▁pattern ▁that ▁could ▁be ▁explained ▁from ▁sens ory ▁input ▁to ▁motor ▁output ▁( C arr ▁ 1 9 9 4 ). ▁ ▁The ▁built - in ▁electric ▁organ ▁of ▁E igen n mania ▁that ▁gave ▁mill iv olt ▁dis charg es ▁was ▁found ▁to ▁be ▁adapt ive ▁for ▁location ▁of ▁external ▁objects ▁and ▁for ▁communication ▁( elect ro location ▁and ▁electro communic ation , ▁respectively ) ▁( B ul lock ▁et ▁al . ▁ 1 9 9 5 ). ▁ ▁Heil igen berg ▁also ▁continued ▁study ▁on ▁the ▁potentially ▁more ▁complex ▁social ▁behav iors , ▁including ▁court ship ▁and ▁ag gress ive ▁enc oun ters . ▁ ▁The ▁dec ades ' ▁worth ▁of ▁work ▁was ▁expressed ▁through ▁the ▁book , ▁" Ne ural ▁N ets ▁in ▁Electric ▁Fish ," ▁in ▁which ▁he ▁explains ▁observed ▁phen omena ▁of ▁the ▁jam ming ▁avoid ance ▁response , ▁the ▁nature ▁of ▁the ▁elect rical ▁stim ulus , ▁the ▁neural ▁networks ▁trigger ing ▁them , ▁and ▁even