During the experiment, experts studied the mechanism of short-latency afferent inhibition (SAI), the "inhibitory system" of the brain responsible for the interaction of sensory signals and movements. It is this system that ensures the accuracy of motor skills and the consistency of human actions.
The study showed that caffeine enhances SAI function by increasing the level of acetylcholine, a neurotransmitter involved in the transmission of signals between the sensory and motor areas of the brain. This helps to adjust movements more precisely and improves fine motor skills, writes RuNews24.
According to scientists, the effect is especially noticeable in everyday activities such as writing, typing, working with tools, drawing or playing musical instruments.
At the same time, the researchers emphasize that we are talking about a moderate effect: coffee does not increase skills to a new level, but it helps to more accurately implement existing ones. Excessive consumption of caffeine, on the contrary, can cause trembling in the hands and poor sleep. The experiment used a dose of about 200 mg of caffeine (about 2-3 cups of coffee).
