Could this explain POTS 'brain fog'?

Researchers document brain blood velocity changes that correlate with impaired cognition in postural tachycardia syndrome

People with postural tachycardia syndrome (POTS) who complain of ‘brain fog’ could be experiencing the effects of reduced brain blood flow and prolonged reaction times, Australian researchers say.

Royal Adelaide Hospital cardiologists and colleagues performed a 30-minute cognitive stress test on 22 patients with POTS (mean age 29, 86% female) and compared their outcomes with those for 18 matched, healthy controls (mean age 28, 72% female).

A range of physiological and cognitive tests, plus completion of various questionnaires, were performed at