The fundamental nature of memory has eluded philosophers and scientists for over two millennia.  As early as 350 B.C., Aristotle conjectured that the mind was like a blank wax tablet, or tabula rasa, imprinted with one’s experiences but only made decipherable by associations between the distinct ideas etched into the tablet [1].  As modern neuroscience emerged in the 20th century, doctors learned more about how … Continue reading Total recall: using light to create and erase memories