However, that has not stopped new entrants from continuing to join the fray, with novel twists on the basic scanning-probe design.

ECONOMIST: MONITOR

For example, one day we might be able to design apps that allow people to probe their own cognitive abilities (processing speed, memory, decision-making, etc.) at any time during the day and track these abilities over the years, transmitting the results from their smartphones to a health care provider if desired.

CNN: How mobile tech can influence our brain