They highlighted the effect of underlying cardiovascular diseases and risk factors, stiffened arteries and imbalance between sympathetic and parasympathetic nerve activities.
Previous theories put forward have suggested that an elevated pulse could cause blood-brain barrier dysfunction, which could, in turn, contribute to the development of dementia.
It does so by deregulating brain cells and increasing cellular erudition of oxidative and inflammatory molecules, according to Frontiers in Neuroscience.
The findings add to a string of evidence highlighting a strong link between irregular heart rhythm and dementia.