The bottleneck mechanism occurs when the first stimulus is being processed, any other stimuli cannot be processed. The processing of the second stimulus is postponed which slows down reaction time. Neurons that take in information send this information to specific neural networks in different locations.
Sometimes the more telling statistic is the median, instead of the average â but in the age of average, it might take some effort to embrace the more accurate number.
There is a formal statistical setup in which you are trying to use the mean or median as an estimate of the center of some symmetric[1] population, based on a sample. In this case, one should use the more accurate estimate, and which is more accurate depends on the shape of the population. For a bell-shaped population distribution, the mean will be more accurate. For a heavy-tailed distribution (e.g. Cauchy) the median will be more accurate.