Inclusion Criteria:  18 years or older female diagnosis of overactive bladder with symptoms of urgency urinary incontinence majority of the time during the last 3 months  Exclusion Criteria:  current use of sacral neuromodulation new initiation of overactive bladder treatment within the last 6 weeks has had intradetrusor onabotulinumtoxinA injections in the last 3 months neurological disease affecting the bladder or bowel incomplete bladder emptying history of urologic cancer active infection history of cystitis caused by tuberculosis, radiation, or chemotherapies severe pelvic pain pregnancy post-partum 6 weeks post-surgical 6 weeks cannot undergo MRI history of epilepsy or seizures