Neuroscience Group Main Office. Main Clinic Hours: Monday 8:00-5:00, Tuesday 7:00am-7:00pm, Wednesday 7:00am-7:00pm, Thursday 7:00am-7:00pm, Friday 8:00-4:00/*3:30 on the first Friday of the month. Our extended hours on Tuesday, Wednesday and Thursday are by appointment only. We also offer MRIs during the extended hours beginning at 6:45..