Dr.corpus is studying patients who have epilesey and perform split brain surgery on half split brain patients who are all...

Dr.corpus is studying patients who have epilesey and perform split brain surgery on half split brain patients who are all e.g.. Handed and patients who have not had surgery but are right handed she would like to further her study by flashing on a screen ome word that to tje left and ome word band to the right and ask participants what did they see what is the Independant Variable? Howbisbit being manipulated?