Following the Brain’s Train of Thought as It Makes Decisions

The human brain makes about 35,000 decisions in a single day. Each of these decisions influences our actions and behaviors. For a long time, scientists have struggled to study the brain at a level of detail that would allow them to link events in the brain to behavior. Jeremiah Cohen, Ph.D., illustrates his journey to a scientific discovery on decision making — found through a research technique called optogenetics — that could change the way we think about brain and behavior.