Though the brain works mostly in networks of communicating cells, some research has shown that single cells might recognize specific people’s faces. This idea, known as the “grandmother cell” theory, suggests that one single cell is responsible for recognizing one individual. Using electrodes to record responses from cells, scientists demonstrated that specific images elicit strong responses from one neuron. One study showed a cell responding strongly to pictures of Jennifer Aniston and nothing else. So, a specific type of cell could be involved in recognizing complex visual patterns, rather than just identifying simple shapes. However, if this is really true, losing that cell might mean losing the ability to recognize a person forever! At the very least, this research shows that individual brain cells are capable of more complex “thinking” than previously thought.