"The findings presented in this dissertation suggest that the brain is capable of responding robustly to both physical “touch” and mental “imagined” stimulation. As physical genital stimulation builds up and culminates in the major neurological event of orgasm, many brain regions implicated in sensory, motor, cognitive, and reward processes are recruited along the way. How these regions interact to create the complex phenomenological experiences of sexual arousal and orgasm are yet to be fully understood. Fortunately, we are at the brink of advances in methodology that will facilitate our ability to address this, and other questions, raised by this dissertation."