A two-state model of simple reaction time

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the growing rate during this silent interval.
Poppel(1978) proposed a taxonomy of time experiences into
five elementary ones (experience of duration, simultaneity/
successiveness, sequence, present, and anticipation). His basic
assumption is that time perception has to be related to the
occurrence of events as they are perceived and actions taken by
the subject. Duration estimation of longer intervals is determined
by the amount of information processed (and/or stored) or by the
mental content. As to experiences of simultaneity/successiveness,
he pointed out two aspects of temporal resolving power, that is,
fusion and order thresholds. Fusion threshold is dependent on
sensory modalities, but, order threshold is independent on them.
Experience of sequence is concerned to the order in which events
occurred. As to the experience of present, he insisted that
temporal intervals up to a few seconds are experienced in a way
qualitatively different from longer temporal intervals. Time
interval of approximately 2 sec is experienced as a unit, that is,
as a present. Anticipation is concerned to temporal organization,
that is, to the programming of future behavior sequences.