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Stimulants can affect various functions, including arousal, attention, the reward system, learning, memory, and emotion. Effects range from mild stimulation to euphoria, depending on the specific drug, dose, route of administration, and inter-individual characteristics. Stimulants have a long history of use, both for medical and non-medical ...
In older adults, memory is typically best in the morning and gradually declines over the day. Those who consumed caffeine in the morning showed much better memory, both short-term and long-term than those who consumed a placebo, especially in late afternoon, where memory and attention may be most crucial to daily functioning for the elderly.
In addition to adrenaline, Dr. Connor says that the stimulant in coffee may also affect your central nervous system, leading to an increased amount of cortisol hitting your system.
“Even if you don’t think it affects your sleep, caffeine has stimulant properties that interfere with sleep by inhibiting adenosine, which is important for deep sleep,” says Dr. Sunderram.
If you love a good cup of coffee or two in the morning, go for it. But try not to consume caffeine after about 2 p.m. That’s because caffeine is a stimulant, and it can keep you up many hours ...
Depending on its method of action, a psychoactive substance may block the receptors on the post-synaptic neuron , or block reuptake or affect neurotransmitter synthesis in the pre-synaptic neuron . Psychoactive drugs operate by temporarily affecting a person's neurochemistry , which in turn causes changes in a person's mood, cognition ...
Stimulant psychosis is a mental disorder characterized by psychotic symptoms (such as hallucinations, paranoid ideation, delusions, disorganized thinking, grossly disorganized behaviour). It involves and typically occurs following an overdose or several day binge on psychostimulants , [ 1 ] although it can occur in the course of stimulant ...
Use of stimulants may cause the body to significantly reduce its production of endogenous compounds that fulfill similar functions. Once the effect of the ingested stimulant has worn off the user may feel depressed, lethargic, confused, and dysphoric. This is colloquially termed a "crash" and may promote reuse of the stimulant.