The amount of information we can absorb not only depends on the time we actually engage our attention. It also depends on how we distribute this time in subintervals. It seems that we can only pay our highest degree of attention for a few seconds [wikipedia article], so what do we do in the rest?
Related to this topic is the strategy followed by Hollywood, who are interested in maintaining their movies as appealing as possible. In this next article there is an interesting analysis of the duration and distribution of the shoot lengths.
James E. Cutting, Attention and the Evolution of Hollywood Film Psychological Science, 2010
One of the main conclusions is that the distribution of power in the frequency domain must obey 1/f , where f is the frequency. I am sure this is particularly important for teachers and students.
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