What instantaneous effect does caffeine hold on the middle nervy system?
Answers:
Caffeine lowers the stimulus threshold to generate an action potential... influential to more twitches and jitters from the same stimuli.
Caffeine is a general cellular stimulant, the handling of which is through the inhibition of phosphodiesterase,the enzyme that breaks down cyclic AMP (cAMP) to 5 cAMP. Increasing available cAMP increases the phosphorylation of proteins in membranes and changes the functional activity of cell. These intracellular changes in the activity of brain cell results in stimulation of the cell. Since caffeine is so widely distributed and so many brain cells use cAMP, it is a broad stimulant (increases heart rate, blood pressure, alertness, makes it difficult to sleep (for most people) and also has some diuretic effects. It's a relatively safe drug, but you can OD on caffeine (characterized by psychotic similar to symptoms). Source(s): I am a forensic psychopharmacologist, author of several books, and taught neuropharmacology for many years. Also see: Drugs, The Brain and Behavior: The Pharmacology of Abuse and Dependence
Caffeine is a stimulant which is why people usually drink it first thing in the morning. It affects the intermediate nervous system by making you feel more alert. Too much caffeine will cause you to be jittery and hold trouble sleeping. It is also somewhat addictive. If you drink coffee and/or caffeine sodas every day,try quitting cold turkey. It not only will be difficult but you will get bill symptoms like headaches.
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