s , ▁defined ▁by ▁an ▁early ▁posterior ▁negative ▁wave ▁followed ▁by ▁a ▁larger ▁anterior ▁positive ▁wave , ▁across ▁a ▁variety ▁of ▁stim ulus ▁rates ▁and ▁omitted ▁stim ulus ▁percent ages . ▁Her ▁work ▁provided ▁no ▁only ▁insight ▁into ▁the ▁brain ' s ▁OS R ▁but ▁also ▁to ▁the ▁cave at ▁associated ▁with ▁using ▁OS R s ▁as ▁a ▁“ null ” ▁trial . ▁ ▁Bus se ▁then ▁published ▁a ▁fasc in ating ▁paper ▁in ▁the ▁Pro ceed ings ▁of ▁the ▁National ▁Academy ▁of ▁Sciences ▁expl oring ▁the ▁phenomen on ▁of ▁cross - modal ▁att ent ional ▁spread ing . ▁Bus se ▁found ▁that ▁when ▁a ▁subject ▁is ▁pay ing ▁attention ▁to ▁a ▁stim ulus ▁in ▁one ▁sens ory ▁mod ality , ▁it ▁increases ▁the ▁subject ' s ▁attention ▁to ▁a ▁non - related ▁stim ulus ▁in ▁a ▁different ▁sens ory ▁mod ality . ▁This ▁finding ▁el uc id ated ▁the ▁idea ▁that ▁simultane ous ▁yet ▁dis connected ▁stim uli ▁can ▁be ▁grouped ▁into ▁one ▁mult is ens ory ▁object ▁en han cing ▁the ▁cogn itive ▁processing ▁that ▁is ▁allocated ▁to ▁both ▁stim uli . ▁ ▁Visual ▁Att ention ▁and ▁Process ing ▁ ▁For ▁her ▁gradu ate ▁work , ▁Bus se ▁expl ored ▁how ▁cogn ition ▁influ ences ▁sens ory ▁information ▁processing . ▁For ▁example , ▁Bus se ▁became ▁interested ▁in ▁top - down ▁processing ▁of ▁sens ory ▁information ▁in ▁the ▁case ▁of ▁visual ▁attention , ▁which ▁is ▁the ▁ability ▁of ▁the ▁brain ▁to ▁focus ▁on ▁one ▁aspect ▁of ▁the ▁visual ▁environment ▁even ▁though