J. Psychological factors can influence drug effects. The set or expectations of the user can influence drug effects. The personality of the user can influence drug effects. K. Various environmental factors can influence drug effects. Physical or social context or setting can influence drug effects.
Sensory isolation can influence drug effects.
L. Additional factors that may influence drug effects are schedules of reinforcement, task performance and other variables associated with behavioral measurements. The structure and functions of the CNS also influences drug effects. One of the basic parts of neurons are the axon , which facilitate the transmission of information between neurons. The synapses and receptors are the points of communication between neurons. Neurotransmitters are the vehicle which stimulates the chain of neuron activity resulting in CNS activity.