▁exc urs ions ▁into ▁psych oph ys ics . ▁By ▁ 1 9 6 5 ▁he ▁established ▁the ▁Aud itory ▁Phys i ology ▁Labor atory ▁where ▁he ▁and ▁some ▁sevent y ▁doctor al ▁students , ▁post docs ▁and ▁colle agues ▁have ▁produced ▁a ▁body ▁of ▁work ▁that ▁can ▁be ▁character ized ▁in ▁various ▁categories . ▁ ▁[ 2 . 1 ] ▁Contempor ary ▁interpretation ▁of ▁the ▁origin ▁and ▁properties ▁of ▁gross ▁elect rical ▁responses ▁of ▁the ▁co ch lea ▁and ▁aud itory ▁n erve . ▁ ▁This ▁work ▁forms ▁the ▁basis ▁of ▁present - day ▁measurements ▁and ▁understanding ▁of ▁comp ound ▁elect rical ▁responses ▁of ▁the ▁aud itory ▁peri ph ery . ▁The ▁work ▁was ▁summar ized ▁in ▁the ▁ 1 9 7 3 ▁mon ograph : ▁The ▁Aud itory ▁Per i ph ery . ▁ ▁[ 2 . 2 ] ▁Disc overy ▁of ▁fraction al ▁sub harm on ics ▁in ▁co ch lear ▁mechan ics , ▁including ▁the ▁first ▁report ▁on ▁cha otic ▁behavior ▁in ▁a ▁bi ological ▁system , ▁as ▁well ▁as ▁the ▁first ▁demonstr ation ▁of ▁a ▁form ▁of ▁o to ac oust ic ▁em issions . ▁ ▁[ 2 . 3 ] ▁First ▁phys i ological ▁demonstr ation ▁that ▁co ch lear ▁dist ort ion ▁is ▁related ▁to ▁hair ▁cell ▁trans du ction ▁. ▁ ▁[ 2 . 4 ] ▁First ▁explanation ▁of ▁what ▁determ ines ▁low - fre quency ▁aud itory ▁threshold ▁ ▁[ 2 . 5 ] ▁Disc overy ▁that ▁inner ▁hair ▁cells ▁respond ▁to ▁bas ilar