AP PSYCHOLOGY

Detailed explanation-1: -The major stimulant drugs are amphetamines and related compounds, methylxanthines (methylated purines), cocaine, and nicotine. Amphetamines achieve their effect by increasing the amount and activity of the neurotransmitter norepinephrine (noradrenaline) within the brain.

Detailed explanation-2: -Stimulants are drugs that excite neural activity and speed up body functions.

Detailed explanation-3: -(SEN-trul NER-vus SIS-tum STIM-yoo-lunt) A type of drug that increases the levels of certain chemicals in the brain and increases alertness, attention, energy, and physical activity. Central nervous system stimulants also raise blood pressure and increase heart rate and breathing rate.

Detailed explanation-4: -The CNS stimulants can be classified as analeptic stimulants, psychomotor stimulants, or methylxanthines. Doxapram activates peripheral chemoreceptors and central respiratory centres in a dose-dependent manner. Psychomotor stimulants (e.g. cocaine and amfetamines) increase sympathetic nervous system activity.

Detailed explanation-5: -MDMA increases levels of these neurotransmitters within the synapse by enhancing their release from nerve endings and/or inhibiting their reuptake.