Stock Photo: BRAIN, DRAWING. BRAIN, DRAWING Love at first sight - stage 3 (see image no. 11895 05 for stage 1 and no. 11896 05 for stage 2). Illustration of what occurs in the brain when a subject falls in love. The prefrontal cortex enables the subject to make decisions and to create a strategy for action which is then implemented by the motor cortex (in blue).