<prompt> Where will be the placement location for Auditory Brainstem Implant?Scala tympaniRecess of 4th ventricleIACback of ear  <response>: The implant is usually placed in the lateral recess of the fouh ventricle at the time of tumor resection to stimulate the cochlear nucleus Auditory Brainstem Implant ABI: Tumor resection surgery in NF patients result in cochlear nerve damage or loss of function of nerve resulting in deafness. ABI are useful in restoring auditory perception to deaf patients with neurofibromatosis type 2 NF2 Also used in treatment of congenitally deaf children with cochlear malformations or cochlear nerve deficiencies. Placement location: Lateral recess of 4th ventricle REF : HAZARIKA 4TH ED 