lead to dementia so a TI a doesn't lead to dementia because as we said by definition a TI a doesn't damage the brain but little tiny strokes they can lead to dementia so dementia being a lack of cognitive ability so you can imagine if you're starting to knock off lots of little spots the connections between different areas of the brain are going to be affected those typically occur again in people with high blood pressure that the small little blood vessels deep in the brain get narrowed and you start to get these little tiny