Day 8: Still on the topic of memory - a lot of people want to have a “better” memory. Improving memory is also an active research topic, as it has tremendous potential in disorders that affect memory, such as dementia. One method that is currently being studied is transcranial stimulation - basically applying small currents to the scalp. The results are still somewhat mixed and a lot more research is necessary to optimize such protocols, but that hasn’t stopped the development of commercial applications that claim unproven benefits. Yet here’s the kicker: when tested in the lab, some of these commercial devices actually had negative effects, leading to worse memory performance.