Concept art. Concept art is a form of illustration used to convey an idea for use in films, video games, animation, comic books, or other media before it is put into the final product. Concept art is also referred to as visual development and/or concept design.
The term âpsychoactive substancesâ includes all substances that affect the brainânot only legal, non-prescription drugs such as alcool and tobacco) and illegal drugs such as cannabis and heroin), but also prescription medications such as Valium and other tranquilizers and Prozac and other antidepressants.
Neurotransmitters can excite or inhibit neurons (nerve cells). Some common neurotransmitters are acetylcholine, norepinephrine, dopamine, serotonin and gamma aminobutyric acid (GABA). Acetylcholine and norepinephrine are excitatory neurotransmitters while dopamine, serotonin, and GABA are inhibitory. Each neurotransmitter can directly or indirectly influence neurons in a specific portion of the brain, thereby affecting behavior.