I think you meant to ask,"how does alcohol IMPAIR reaction time?" and I would say significantly.I would venture to guess around 2-3 seconds
No, alcohol does not speed up reaction time, alcohol infact INCREASES SPEED of reaction time, thus SLOWING DOWN reactions. Alcohol doesnt promote good judgement, it impares it due to the slow down in activity of the neurones in the brain.
Directional
sharpened reaction time
Exactly the opposite. It SLOWS your reflexes and reaction times.
When you take a few sips then your initial reaction time gets faster. You become more alert and more talkative but after drinking more your reaction rates gets slower and slower. Your vision becomes blurry and your balance is all over the place.
Alcohol affects the central nervous system, which can lead to slower communication between the brain and muscles. This delay in communication results in impaired reaction time and coordination. Additionally, alcohol can inhibit neural processes involved in decision-making and motor skills, further contributing to the slowing of reaction time.
Depressants
Yes - this is one reason why limits are set for how much alcohol you can legally have in your blood
Alcohol can be considered as a stimulant.
When you are intoxicated from alcohol your reaction time might be off and also your judgement of situations, these are both effects from alcohol that could through off your game.
The increase in alcohol consumption, by the operator, is correlated with a decrease in operational safety of the vessel, its crew and its passengers. Or Physical reactions become slower.
Combustion -- but the reaction is between alcohol and oxygen -- fire is the process or the reaction itself.