Regarding the Experiments Using Intracranial Self-Stimulation (ICS) of the Pleasure

Multiple Choice

Regarding the experiments using intracranial self-stimulation (ICS) of the pleasure centers, which of the following statements is FALSE?

A) If the reward circuit was not turned off, a rat would ignore food, water, and sex in favor of bar pressing to receive ICS.
B) Some of the rats constantly pressed the lever to get ICS for 15 to 20 hours, collapsing from exhaustion.
C) Psychoactive drugs, such as alcohol and cocaine, activate the same pleasure pathways as ICS.
D) No humans have ever undergone intracranial self-stimulation.