The intra-individual stability of elementary times

The replication of the tasks by one subject and the independent evaluation results in approximately the same elementary times ( 2ms). The reason for this stability is not known. 

The most reaction time experiments were conducted between 1 and 6 pm. Is this a prerequisite for the replicability of elementary times Most of the subjects were young adults between 20 and 30 years old, there were more men than women. 

The latencies of event-related potentials prove that the elementary time is no mean value but is used throughout the pathway as a basic component. The elementary time may be explained as the time between two neurons. The elementary time is named in many other ways in the literature. For example, the interhemispheric time is the time which is needed to cross the corpus callosum. Kosslyn et al. (1999) give a value of 15ms. 

Because the axons are of different lengths, the time to cross the synapse, to integrate the postsynaptic potentials and to trigger the new action potential may be the steps which determine the elementary time. The most important advantage of a stable, replicable elementary time is its use as the basic component of pathways. So it is of great help in understanding the structure of the pathways of mind. 

There are the following possible symmetries of elementary times between the different mental pathways. 

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