One common way to alter human consciousness is to administer a substance capable of altering attention, emotion, judgment, memory, time sense, self-control, or perception, otherwise known as a .

Psychoactive Drug        

Explanation:

One common way to alter human consciousness is to administer a substance capable of altering attention, emotion, judgment, memory, time sense, self-control, or perception, otherwise known as a psychoactive drug.  Psychoactive drugs are drugs that are capable of altering the proper functioning of the nervous system when administered thus impairing proper brain functions, resulting in temporary changes in perception, mood, consciousness and behavior. Examples are cannabis, amphetamines, ecstasy, cocaine, and heroin.