When we are waiting for an elevator, we know that the elevator will not open right away. There is a delay of 2 or 3 seconds. How does the brain (likely cerebellum) represent the running time of 2 or 3 seconds vs 10 seconds?
What would the neural code representing elapsed time look like? A mouse can be presented with a stimulus after 2 or 3 seconds and 10 seconds. It "learns" to recognize the difference between the two elapsed times, and it is partly experience-dependent (a prior of history). But how?